Color

#e7040f

#e7040f
hex#e7040f
rgbrgb(231, 4, 15)
hslhsl(357, 97%, 46%)
oklchoklch(0.584 0.238 28.3)
Closest name: Alarm (#ec0003)Relative luminance 0.1711

Tints & shades

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

Harmonies

Complementary

Open in tool →

#04e7dc

#e70481 · #e76a04

#0fe704 · #040fe7

Split-complementary

Open in tool →

#04e76a · #0481e7

#81e704 · #04e7dc · #6a04e7

Contrast

#e7040f as textRatioAAAA largeAAAFix
Aaon white
4.75:1passpassfail
  • AAA: use #b5030c as the text (7.04:1)
Aaon black
4.42:1failpassfail
  • AA: use #ec040f as the text (4.59:1)
  • AAA: use #fd636b as the text (7.17:1)
  • AA: or shift the background to #fafafa (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e7040f as the background.

Brands using this color

Fonts for this mood

#e7040f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e7040f
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 #e7040f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e7040f-c49f9c-62cb93-2d251f-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