Color

#e71304

#e71304
hex#e71304
rgbrgb(231, 19, 4)
hslhsl(4, 97%, 46%)
oklchoklch(0.587 0.235 29.8)
Closest name: Alarm (#ec0003)Relative luminance 0.1746

Tints & shades

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

Harmonies

Complementary

Open in tool →

#04d8e7

#e70466 · #e78404

#04e713 · #1304e7

Split-complementary

Open in tool →

#04e784 · #0466e7

#66e704 · #04d8e7 · #8404e7

Contrast

#e71304 as textRatioAAAA largeAAAFix
Aaon white
4.67:1passpassfail
  • AAA: use #b00e03 as the text (7.22:1)
Aaon black
4.49:1failpassfail
  • AA: use #ec1304 as the text (4.66:1)
  • AAA: use #fc6459 as the text (7.11:1)
  • AA: or shift the background to #fcfcfc (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e71304 as the background.

Brands using this color

Fonts for this mood

#e71304 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e71304
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 #e71304 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e71304-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