#31231b as text	Ratio	AA	AA large	AAA	Fix
Aaon white	15.14:1	pass	pass	pass	Passes AAA — no fix needed.
Aaon black	1.39:1	fail	fail	fail	AA: use #976c53 as the text (4.59:1) AAA: use #b58e78 as the text (7.11:1) AA: or shift the background to #8c8c8c (4.5:1) AAA: or shift the background to #b3b3b3 (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #31231b as the background.

Brands using this color

Headspaceprimary · #302615 · Δ1.646

Palettes built around it

7c3a1d 8a7358 2f5d50 faf6ef 2b2118

Bookshop

Open in tool →

Chestnut and forest on cream read like a cloth-bound spine; the palette recedes so covers and type do the talking.

Editorial Warm Elegant

5f8460 a8896a c6633f fbf7f2 2a2320

Wellness

Open in tool →

Sage and terracotta feel natural and calm — the anti-hospital palette for wellbeing brands.

Warm Muted FriendlyHealth

Fonts for this mood

#31231b 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 #31231b

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 #31231b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/31231b-c4af9c-62cbbf-2d2a1f-f1e9ea?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