#c91f08 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	5.7:1	pass	pass	fail	AAA: use #ab1a07 as the text (7.29:1)
Aaon black	3.68:1	fail	pass	fail	AA: use #e6230a as the text (4.61:1) AAA: use #f86754 as the text (7.06:1) AA: or shift the background to #e6e6e6 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #c91f08 as the background.

Brands using this color

Behanceaccent · #d00d00 · Δ1.484

Fonts for this mood

#c91f08 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 #c91f08

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 #c91f08 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c91f08-c4a59c-62cba4-2d271f-f1e9ec?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