Color

#fb041d

#fb041d
hex#fb041d
rgbrgb(251, 4, 29)
hslhsl(354, 97%, 50%)
oklchoklch(0.622 0.253 27.1)
Closest name: red (#ff0000)Relative luminance 0.2068

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#04fbe2

#fb0498 · #fb6704

#1dfb04 · #041dfb

Split-complementary

Open in tool →

#04fb67 · #0498fb

#98fb04 · #04fbe2 · #6704fb

Contrast

#fb041d as textRatioAAAA largeAAAFix
Aaon white
4.09:1failpassfail
  • AA: use #ec041b as the text (4.57:1)
  • AAA: use #b50315 as the text (7.03:1)
  • AA: or shift the background to #141414 (4.51:1)
Aaon black
5.14:1passpassfail

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #fb041d as the background.

Brands using this color

Fonts for this mood

#fb041d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #fb041d
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 #fb041d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fb041d-c49d9c-62cb8e-2d241f-f1e9ee?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