Color

#e01a3b

#e01a3b
hex#e01a3b
rgbrgb(224, 26, 59)
hslhsl(350, 79%, 49%)
oklchoklch(0.581 0.223 21.1)
Closest name: crimson (#dc143c)Relative luminance 0.169

Colors that go with #e01a3b

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 →

#1ae0bf

#e01a9e · #e05c1a

#3be01a · #1a3be0

Split-complementary

Open in tool →

#1ae05c · #1a9ee0

#9ee01a · #1ae0bf · #5c1ae0

Contrast

#e01a3b as textRatioAAAA largeAAAFix
Aaon white
4.79:1passpassfail
  • AAA: use #ad142e as the text (7.2:1)
Aaon black
4.38:1failpassfail
  • AA: use #e41b3c as the text (4.52:1)
  • AAA: use #ee6d82 as the text (7.15:1)
  • AA: or shift the background to #fafafa (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e01a3b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#e01a3b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e01a3b
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 #e01a3b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e01a3b-c49c9e-62cb87-2d231f-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