#ffb31a as text	Ratio	AA	AA large	AAA	Fix
Aaon white	1.79:1	fail	fail	fail	AA: use #9e6900 as the text (4.69:1) AAA: use #754e00 as the text (7.38:1) AA: or shift the background to #4f4f4f (4.57:1) AAA: or shift the background to #333333 (7.05:1)
Aaon black	11.71:1	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 #ffb31a as the background.

Brands using this color

Mistral AIsecondary · #ffaf01 · Δ0.927

Fonts for this mood

#ffb31a 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 #ffb31a

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 #ffb31a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ffb31a-c4bb9c-62b8cb-2c2d1f-f1ebe9?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