#efc371 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	1.65:1	fail	fail	fail	AA: use #9c6c11 as the text (4.6:1) AAA: use #77520d as the text (7.01:1) AA: or shift the background to #545454 (4.58:1) AAA: or shift the background to #383838 (7.1:1)
Aaon black	12.71:1	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 #efc371 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

e8c170 a8b5a0 f28e6b 1f2a24 f1ede4

Chalkboard

Open in tool →

Slate green with chalk cream and a coral — nostalgic without being twee.

Dark Muted WarmEducation

2a9d8f 8ecae6 e9c46a f7fafc 1a2b3c

Coastal

Open in tool →

Sea-teal, sky and sand — bright without shouting; works for travel, wellness, and anything near water.

Cool Light Clean

Fonts for this mood

#efc371 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 #efc371

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 #efc371 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/efc371-c4ba9c-62b9cb-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