#ef905d as text	Ratio	AA	AA large	AAA	Fix
Aaon white	2.38:1	fail	fail	fail	AA: use #c35113 as the text (4.66:1) AAA: use #953e0f as the text (7.06:1) AA: or shift the background to #3d3d3d (4.56:1) AAA: or shift the background to #1c1c1c (7.16:1)
Aaon black	8.82:1	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 #ef905d 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

Fonts for this mood

#ef905d 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 #ef905d

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 #ef905d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ef905d-c4af9c-62cbbd-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