Color

#e7381d

#e7381d
hex#e7381d
rgbrgb(231, 56, 29)
hslhsl(8, 81%, 51%)
oklchoklch(0.609 0.215 31.6)
Closest name: Arcade Fire (#ee3311)Relative luminance 0.1991

Colors that go with #e7381d

Charcoal, Sea Green and Steel Blue 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 →

#1dcce7

#e71d67 · #e79d1d

#1de738 · #381de7

Split-complementary

Open in tool →

#1de79d · #1d67e7

#67e71d · #1dcce7 · #9d1de7

Contrast

#e7381d as textRatioAAAA largeAAAFix
Aaon white
4.22:1failpassfail
  • AA: use #de3217 as the text (4.59:1)
  • AAA: use #a62511 as the text (7.26:1)
  • AA: or shift the background to #0f0f0f (4.55:1)
Aaon black
4.98:1passpassfail
  • AAA: use #ee715d as the text (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e7381d as the background.

Brands using this color

Fonts for this mood

#e7381d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e7381d
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 #e7381d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e7381d-c4a69c-62cba6-2d271f-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