#fb373a as text	Ratio	AA	AA large	AAA	Fix
Aaon white	3.68:1	fail	pass	fail	AA: use #eb0509 as the text (4.61:1) AAA: use #b40407 as the text (7.09:1) AA: or shift the background to #1c1c1c (4.63:1)
Aaon black	5.71:1	pass	pass	fail	AAA: use #fc6467 as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #fb373a as the background.

Brands using this color

Neonaccent · #ff3621 · Δ1.959

Palettes built around it

ff3b30 ffffff ffe600 0a0a0a

Streetwear

Open in tool →

Black, white, red, yellow — drop-culture signal colors, unmissable at thumbnail size.

Bold Vivid DarkFashion

Fonts for this mood

#fb373a 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 #fb373a

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 #fb373a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fb373a-c4a09c-62cb96-2d251f-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