Color

#fd231c

#fd231c
hex#fd231c
rgbrgb(253, 35, 28)
hslhsl(2, 98%, 55%)
oklchoklch(0.635 0.246 28.9)
Closest name: red (#ff0000)Relative luminance 0.2217

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1cf5fd

#fd1c85 · #fd941c

#1cfd23 · #231cfd

Split-complementary

Open in tool →

#1cfd94 · #1c85fd

#85fd1c · #1cf5fd · #941cfd

Contrast

#fd231c as textRatioAAAA largeAAAFix
Aaon white
3.86:1failpassfail
  • AA: use #ed0a02 as the text (4.52:1)
  • AAA: use #b10802 as the text (7.23:1)
  • AA: or shift the background to #1a1a1a (4.5:1)
Aaon black
5.43:1passpassfail
  • AAA: use #fd635d 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 #fd231c as the background.

Brands using this color

Fonts for this mood

#fd231c reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #fd231c
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 #fd231c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/fd231c-c4a29c-62cb9c-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