How to Create On-Brand Social Media Graphics With AI

Coding Liquids tutorial cover featuring Sagnik Bhattacharya for How to Create On-Brand Social Media Graphics With AI.
Coding Liquids tutorial cover featuring Sagnik Bhattacharya for How to Create On-Brand Social Media Graphics With AI.

Store your brand rules (logo files, two or three hex colours, two fonts) in a brand kit in Canva or Adobe Express, and build five to eight master templates for the posts you make every month. Then use AI only for the parts that change: removing backgrounds, resizing, drafting the words, generating a backdrop. Don't ask an image generator for the whole graphic.

The reason is practical. Image generators treat colour codes and font names as loose suggestions, redraw logos into something that looks like yours from across a room, and still misspell words often enough that you can't trust them with an event date. A template locks what must stay the same. AI is very good at filling in what changes. Keep those two jobs separate and your feed stays recognisable however many people make the posts.

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Why "make me a poster" prompts drift off-brand

Imagine a members' social club with a bar, a dining room and a busy events programme. Its brand is deep green, brass and cream, with a simple crest. A volunteer asked an image generator for a quiz night graphic:

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Create an Instagram poster for our club quiz night, Friday 14 Nov,
7.30pm, $5 per person, teams of 6. Use our colours #1F4D3A and
#B08D57 and our crest logo. Elegant, classic style.

An illustrative account of what came back, and what was wrong with it:

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  • A handsome green-and-gold design, but the green was noticeably brighter than the club's, and the gold was yellow rather than brass.
  • A crest the club doesn't have, with an invented Latin motto.
  • "QUIZ NIGTH" in the headline, and "Friday 14 Nov" rendered as "Fri 41 Nov".
  • A font that looked vaguely like the club's serif but wasn't.
  • Four people in the image, generated, with slightly odd hands, who aren't members.

Nothing here is unusual. Image models are built to make pleasing pictures, not to follow a style guide. The fix isn't a better prompt; it's putting the fixed parts somewhere the AI can't change them.

Write the brand rules down in a form tools can use

Before touching any tool, write one page of rules. It takes an hour, and it's what you'll paste into prompts and hand to every volunteer. The club's version, filled in:

BRAND RULES: [club name]
Logo: crest + wordmark (SVG and PNG, transparent). Cream version for
  dark backgrounds. Never recolour, stretch, or place on photos
  without the green band behind it. Clear space = height of the "C".
Colours: Club green #1F4D3A (main), Brass #B08D57 (accents, lines),
  Cream #F5F1E8 (backgrounds, text on green). Black only for body text.
Fonts: headings Playfair Display; body Inter. Nothing else.
Photos: real members and rooms, warm light, people with consent;
  no stock photos of "people toasting"; no filters beyond warmth.
Tone of text on graphics: short, confident, a little dry.
  Max 12 words on a graphic. Details go in the caption.
Never: gold gradients, script fonts, exclamation marks on graphics,
  generated people, generated versions of our rooms.

The "never" list does as much work as everything above it. For more on turning brand rules into instructions for image tools specifically, see brand guidelines for AI images.

Set up the brand kit, then lock it

A brand kit stores your logo, colours and fonts inside the design tool, so every template and every helper uses the same ones. Two tools cover most small organisations:

  • Canva. The free plan includes one Brand Kit limited to three colours, which would just hold the club's green, brass and cream. Paid plans allow more Brand Kits (up to five on Pro), custom fonts, and more of the AI tools, which draw on a monthly AI allowance that varies by plan. Check current prices on Canva's pricing page for your account. Which Canva AI features save real time goes through them one by one.
  • Adobe Express. Premium is $9.99 a month and includes brand kits and 250 generative credits a month; the free plan has no brand kit. It suits organisations already using Adobe tools.

Upload the logo files, add the three hex codes exactly, upload or select the two fonts, and delete the default colour suggestions so nobody picks a near-miss green from a palette. Then, in each template you build, lock the elements that should never move: the logo, the green band, the heading style. Locked elements can't be nudged or recoloured by a volunteer in a hurry.

Build master templates for the posts you make every month

Look at your last three months of posts and group them. Most small organisations find the same five to eight types again and again. The club's six, with what stays fixed and what changes:

TemplateSizeFixedChanges each time
Event poster1080×1350 (4:5)Green band, crest, heading font, date blockEvent name, date, photo or texture
Event story1080×1920 (9:16)Same, safe margins top and bottomEvent name, date, "tickets at the bar"
Dining special1080×1350Cream background, brass line, menu layoutDish photo (background removed), dish name, price
New member welcome1080×1440 (3:4)Frame, "Welcome to the club" linePhoto (with consent), first name
Results / quote card1080×1350Green background, brass quote marksQuote or result, name
Notice1080×1350Cream, plain layout, no photoThe change, the reason, the alternative

On sizes: 4:5 portrait has been the standard tall feed post for years, Instagram added support for 3:4 photos in 2025, and its profile grid now shows posts as 3:4 thumbnails, so keep important content away from the left and right edges of a 4:5 design or it will be trimmed in the grid view. Stories and Reels covers are 9:16.

Carousels deserve a seventh template if you use them. The club's "what's on this month" carousel has a fixed cover slide (green, crest, month name), four identical event slides (photo top half, cream bottom half with name, date and one line), and a fixed closing slide ("Tickets at the bar or via the link in our profile"). Because every slide follows the same grid, a month's carousel takes ten minutes, and it looks designed rather than assembled.

Where AI fills the gaps inside the template

With the fixed parts locked, AI handles four jobs well:

  1. Background removal. Cut the dish out of a busy kitchen photo and drop it on the cream background. One click in Canva or Adobe Express; check the edges of glasses and garnishes.
  2. Resizing. Turn the 4:5 event poster into the 9:16 story in one step (Canva calls this Magic Resize), then fix whatever lands in the story's top and bottom margins.
  3. Words. Draft the 12 words on the graphic and the caption beneath in your chat assistant or the design tool's writer, from the event details.
  4. Backgrounds and textures. Generate a backdrop where a photo isn't needed or available, under tight instructions.

For the third job, give the words a hard limit, because the most common template failure is too much text squeezed into a box meant for six words. An illustrative prompt and result:

Event: wine tasting, Thu 20 Nov, 7pm, $25 members, 6 wines from one
family vineyard, cheese included, 30 places. Write: a headline (max 5
words), a line under it (max 8 words), and a 60-word caption.

Illustrative output: Headline "An Evening of Exquisite Wines!"; line "Join us for an unforgettable tasting experience"; caption beginning "Calling all wine lovers!"

After editing: Headline "Six wines, one family"; line "Thu 20 Nov, 7pm. Cheese included."; caption opening "Thirty places, six wines, one family vineyard, and more cheese than is strictly sensible."

The edited version follows the club's rules: no exclamation marks, a little dry, details on the graphic that people need at a glance. The first version would have fitted in the box, but it could have been any venue's poster.

For the fourth job, constrain the prompt to something an image model does well, and tell it what to leave out:

Background texture only, no text, no logos, no people, no objects.
Dark green velvet fabric, soft fold lines, lit from the top left,
subtle, low contrast so white and brass text will read on top.
Colour close to #1F4D3A. Square, high resolution.

An illustrative result: a rich green fabric texture, close to the club's green but slightly too blue. Rather than regenerating five times, the volunteer placed it in the template and lowered its saturation until it sat next to the green band without clashing. That's usually quicker than chasing an exact colour through prompts. The quiz night headline, date and crest then sit on top in the template's locked fonts, spelt correctly because a person typed them.

If you're weighing up a paid image generator for more ambitious images, whether Midjourney is worth it for small business marketing covers what it adds and costs.

A weekly batch: seven graphics in 40 minutes

Once templates exist, the club's volunteer makes the week's graphics in one sitting on Monday evening. An illustrative session:

  1. Minutes 0 to 5: open the week's plan and paste the event details into the chat assistant: "12 words max per graphic, dry and confident, from these details."
  2. Minutes 5 to 20: duplicate the event poster template for quiz night and the wine tasting; drop in the words; add the velvet texture to one and a real photo of the dining room to the other.
  3. Minutes 20 to 28: resize both to stories, fix the margins.
  4. Minutes 28 to 35: the dining special: remove the background from the chef's photo of the game pie, place it on the cream template, add dish name and price.
  5. Minutes 35 to 40: a notice (car park resurfacing on Thursday) and a welcome card for two new members who agreed to be pictured.

Seven finished graphics, all recognisably the club's. The same set made from scratch each week used to take the volunteer about two and a half hours, much of it choosing colours and fonts that were never quite the same twice.

The off-brand check before anything posts

Run each graphic through this list before scheduling. Most checks take seconds:

  • Thumbnail test: shrink it to the size it appears in a feed (about the size of a stamp on your phone). Can you still read the headline? If not, fewer words or bigger type.
  • Colours: are they from the brand kit only? Zoom in on accents; near-miss greens creep in from photos and generated textures.
  • Logo: the right version for the background, correct clear space, not stretched.
  • Text: read every word and number aloud, including anything generated inside an image. Dates, prices and names are the usual casualties.
  • AI artefacts: in any generated or AI-edited area, look for melted edges, extra fingers, warped text on signs, objects that fade into each other. Checking AI-generated images for errors before posting has a longer list.
  • Contrast: brass on cream looks elegant and reads badly on phones in daylight. Use brass for lines and accents, not for small text. A free online contrast checker will tell you in seconds; the usual accessibility guideline for small text is a ratio of at least 4.5 to 1.
  • Alt text: one plain sentence describing the graphic, written or checked by a person.

An illustrative before and after of the kind of post this catches. A volunteer covering for a week made a quiz poster from a general template: bright green, a script font, "Quiz Nite!!!" in gold gradient and a stock photo of people toasting. Every item on the club's "never" list, in one graphic. The fix took four minutes, because the quiz template already existed: duplicate, type the details, done. The lesson was to pin a link to the templates in the volunteers' chat, not to write a longer rulebook.

Review the templates every quarter

Templates drift too. Six months after the club set its kit up, someone had added a fourth "slightly lighter" green to one template to make a photo pop, two templates still carried last year's bar opening hours in a footer, and the welcome card used a photo frame nobody liked. A 20-minute review each quarter catches this: open every template, check colours against the kit, update fixed text such as opening hours or prices, and delete any template nobody has used in three months. Fewer, better templates get used; a folder of 30 gets ignored.

Rights and labels for AI-made images

A few rules keep AI images out of trouble. Use your own photos of real members, rooms and food wherever the image shows something a person will expect to find; a generated dining room that looks nicer than yours is a false promise. For generated elements, know your tool's terms: Adobe's own Firefly models are trained on licensed content, but partner models offered inside Adobe's apps aren't covered by the same assurances, and Adobe's IP indemnity is only for enterprise customers. The wider legal picture is in whether you can legally use AI-generated images in marketing.

On labels, Meta requires its AI label for photorealistic video and realistic audio, not for still images, but it may label images automatically when it detects signals from AI tools. A generated velvet texture behind real text is unlikely to confuse anyone. A generated "photo" of members at the bar would, and it breaks the club's own rule anyway.

A different template set for a different business

The six templates above suit a club with events. Other businesses need different ones, and working out which is half the job. A holiday-let manager, for instance, might settle on four: a property card (photo, cottage name, sleeps, one standout feature), a "dates just opened" notice, a guest quote card, and a seasonal offer. The property card is where AI earns its keep: the manager removes clutter from photos with the object-removal tool (a stray towel, the cleaner's car in the drive, never anything permanent), resizes each card for feed and story, and drafts the one-line feature from the property's listing. The fixed parts (brand colours, the logo's position, the "sleeps" icon) never change. The discipline is the same: fixed parts locked, variable parts filled by AI, every word checked by a person.

When a designer is still worth paying

AI and templates handle the weekly graphics. They don't replace the design work underneath: a logo in proper vector files, a colour palette that works on screens and in print, and a first set of templates that look considered rather than assembled. For the club, a half-day of a designer's time to build the six master templates would give volunteers a far better starting point than templates improvised by committee, and it only has to be paid for once.

The batching alone adds up: saving roughly two hours a week on graphics is over a hundred volunteer hours a year. That's time the club can spend on the events themselves. The same template approach works for printed material too; designing flyers and printed marketing with AI covers the extra checks print needs.

Further reads

Sources: Canva pricing page (plan features: Brand Kit limits, AI allowance); Adobe Express pricing (Premium plan, generative credits, brand kits); Meta newsroom on AI labels; Instagram aspect-ratio announcements; Adobe Firefly terms from the vendors' pages.

Want a template set your whole team can use?

On a 1:1 call we'll write down your brand rules, set up the brand kit and master templates in the design tool you use, and agree which parts AI is allowed to change.

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