#fa5d52 as text	Ratio	AA	AA large	AAA	Fix
Aaon white	3.11:1	fail	pass	fail	AA: use #e91607 as the text (4.58:1) AAA: use #b21106 as the text (7.06:1) AA: or shift the background to #2b2b2b (4.55:1)
Aaon black	6.75:1	pass	pass	fail	AAA: use #fa665c as the text (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #fa5d52 as the background.

Brands using this color

Airbnbprimary · #ff5a5f · Δ1.945

Palettes built around it

ff5e5b 00cecb ffed66 ffffff 222222

Crayon Box

Open in tool →

Red, teal and yellow at crayon saturation — joyful, but on white with black type so it stays readable for grown-ups.

Playful Vivid FriendlyKids

Fonts for this mood

#fa5d52 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 #fa5d52

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 #fa5d52 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fa5d52-c4a39c-62cb9f-2d261f-f1e9ed?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