#40372b as text	Ratio	AA	AA large	AAA	Fix
Aaon white	11.67:1	pass	pass	pass	Passes AAA — no fix needed.
Aaon black	1.8:1	fail	fail	fail	AA: use #87735a as the text (4.63:1) AAA: use #a7947b as the text (7.17:1) AA: or shift the background to #a1a1a1 (4.52:1) AAA: or shift the background to #c9c9c9 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #40372b as the background.

Brands using this color

Notiontext · #37352f · Δ1.943

Fonts for this mood

#40372b reads as warm, muted, dark. The font library is tagged with the same vocabulary:

Warm fonts →Editorial fonts →Elegant fonts →Luxury fonts →Bold fonts →

mcpConnect your agent — build around #40372b

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 #40372b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/40372b-c4b79c-62c2cb-2d2d1f-f1eae9?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