#f66331 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	3.11:1	fail	pass	fail	AA: use #d73d09 as the text (4.6:1) AAA: use #a22d07 as the text (7.2:1) AA: or shift the background to #2b2b2b (4.55:1)
Aaon black	6.75:1	pass	pass	fail	AAA: use #f76a3b as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #f66331 as the background.

Brands using this color

Cloudflaresecondary · #ff5e1f · Δ1.774

Palettes built around it

f25f29 b03a2e f2c14e 14100e f8ede3

Ember

Open in tool →

Flame orange on charcoal — the sports and energy palette; one accent yellow for stats and highlights.

Bold Dark Warm

Fonts for this mood

#f66331 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 #f66331

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 #f66331 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/f66331-c4ab9c-62cbb2-2d291f-f1e9eb?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