Color

#e0000b

#e0000b
hex#e0000b
rgbrgb(224, 0, 11)
hslhsl(357, 100%, 44%)
oklchoklch(0.57 0.233 28.4)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1587

Colors that go with #e0000b

Charcoal, Royal Blue 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 →

#00e0d5

#e0007b · #e06500

#0be000 · #000be0

Split-complementary

Open in tool →

#00e065 · #007be0

#7be000 · #00e0d5 · #6500e0

Contrast

#e0000b as textRatioAAAA largeAAAFix
Aaon white
5.03:1passpassfail
  • AAA: use #b30009 as the text (7.19:1)
Aaon black
4.17:1failpassfail
  • AA: use #eb000c as the text (4.54:1)
  • AAA: use #ff6169 as the text (7.17:1)
  • AA: or shift the background to #f5f5f5 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e0000b as the background.

Brands using this color

Fonts for this mood

#e0000b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e0000b
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 #e0000b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e0000b-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