Color

#e41b39

#e41b39
hex#e41b39
rgbrgb(228, 27, 57)
hslhsl(351, 79%, 50%)
oklchoklch(0.588 0.226 22)
Closest name: crimson (#dc143c)Relative luminance 0.1757

Colors that go with #e41b39

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 →

#1be4c6

#e41b9e · #e4611b

#39e41b · #1b39e4

Split-complementary

Open in tool →

#1be461 · #1b9ee4

#9ee41b · #1be4c6 · #611be4

Contrast

#e41b39 as textRatioAAAA largeAAAFix
Aaon white
4.65:1passpassfail
  • AAA: use #ad142b as the text (7.21:1)
Aaon black
4.51:1passpassfail
  • AAA: use #ee6d80 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e41b39 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#e41b39 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e41b39
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 #e41b39 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e41b39-c49c9e-62cb89-2d231f-f1e9ee?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