#fbef51 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	1.2:1	fail	fail	fail	AA: use #7d7503 as the text (4.75:1) AAA: use #5f5902 as the text (7.2:1) AA: or shift the background to #696969 (4.59:1) AAA: or shift the background to #4d4d4d (7.07:1)
Aaon black	17.57:1	pass	pass	pass	Passes AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #fbef51 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

ff5e5b 00cecb ffed66 ffffff 222222

Crayon Box

Open in tool →

Red, teal and yellow at crayon saturation — joyful, but on white with black type so it stays readable for grown-ups.

Playful Vivid FriendlyKids

Fonts for this mood

#fbef51 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

Warm fonts →Playful fonts →Bold fonts →

mcpConnect your agent — build around #fbef51

live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp

claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp

try this prompt

›analyze #fbef51 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fbef51-bdbea2-4e9edf-282d1f-f1ede9?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md