Color

#e4281b

#e4281b
hex#e4281b
rgbrgb(228, 40, 27)
hslhsl(4, 79%, 50%)
oklchoklch(0.592 0.222 29.5)
Closest name: Alarm (#ec0003)Relative luminance 0.1809

Colors that go with #e4281b

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 →

#1bd7e4

#e41b72 · #e48d1b

#1be428 · #281be4

Split-complementary

Open in tool →

#1be48d · #1b72e4

#72e41b · #1bd7e4 · #8d1be4

Contrast

#e4281b as textRatioAAAA largeAAAFix
Aaon white
4.55:1passpassfail
  • AAA: use #ad1f14 as the text (7.04:1)
Aaon black
4.62:1passpassfail
  • AAA: use #ed7168 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 #e4281b as the background.

Brands using this color

Fonts for this mood

#e4281b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e4281b
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 #e4281b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e4281b-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