Color

#e30233

#e30233
hex#e30233
rgbrgb(227, 2, 51)
hslhsl(347, 98%, 45%)
oklchoklch(0.579 0.233 22.1)
Closest name: crimson (#dc143c)Relative luminance 0.1661

Colors that go with #e30233

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 →

#02e3b2

#e302a3 · #e34202

#33e302 · #0233e3

Split-complementary

Open in tool →

#02e342 · #02a3e3

#a3e302 · #02e3b2 · #4202e3

Contrast

#e30233 as textRatioAAAA largeAAAFix
Aaon white
4.86:1passpassfail
  • AAA: use #b10228 as the text (7.22:1)
Aaon black
4.32:1failpassfail
  • AA: use #ed0235 as the text (4.66:1)
  • AAA: use #fd5d80 as the text (7.05:1)
  • AA: or shift the background to #f7f7f7 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #e30233 as the background.

Brands using this color

Fonts for this mood

#e30233 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #e30233
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 #e30233 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/e30233-c49ca0-62cb82-2d221f-f1e9ef?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