Color

#e31502

#e31502
hex#e31502
rgbrgb(227, 21, 2)
hslhsl(5, 98%, 45%)
oklchoklch(0.58 0.231 30.1)
Closest name: Alarm (#ec0003)Relative luminance 0.1687

Colors that go with #e31502

Charcoal, Royal Blue and Sea Green lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#02d0e3

#e30260 · #e38502

#02e315 · #1502e3

Split-complementary

Open in tool →

#02e385 · #0260e3

#60e302 · #02d0e3 · #8502e3

Contrast

#e31502 as textRatioAAAA largeAAAFix
Aaon white
4.8:1passpassfail
  • AAA: use #b11002 as the text (7.13:1)
Aaon black
4.37:1failpassfail
  • AA: use #e81602 as the text (4.55:1)
  • AAA: use #fd6153 as the text (7.01:1)
  • AA: or shift the background to #fafafa (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e31502 as the background.

Brands using this color

Fonts for this mood

#e31502 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e31502
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #e31502 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e31502-c4a49c-62cba1-2d261f-f1e9ec?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