Color

#e7180d

#e7180d
hex#e7180d
rgbrgb(231, 24, 13)
hslhsl(3, 89%, 48%)
oklchoklch(0.589 0.233 29.5)
Closest name: Alarm (#ec0003)Relative luminance 0.1767

Colors that go with #e7180d

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 →

#0ddce7

#e70d70 · #e7850d

#0de718 · #180de7

Split-complementary

Open in tool →

#0de785 · #0d70e7

#70e70d · #0ddce7 · #850de7

Contrast

#e7180d as textRatioAAAA largeAAAFix
Aaon white
4.63:1passpassfail
  • AAA: use #b2130a as the text (7.02:1)
Aaon black
4.53:1passpassfail
  • AAA: use #f66760 as the text (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e7180d as the background.

Brands using this color

Fonts for this mood

#e7180d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e7180d
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 #e7180d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e7180d-c4a39c-62cb9d-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