Color

#da0137

#da0137
hex#da0137
rgbrgb(218, 1, 55)
hslhsl(345, 99%, 43%)
oklchoklch(0.562 0.226 20.4)
Closest name: crimson (#dc143c)Relative luminance 0.152

Colors that go with #da0137

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 →

#01daa4

#da01a4 · #da3701

#37da01 · #0137da

Split-complementary

Open in tool →

#01da37 · #01a4da

#a4da01 · #01daa4 · #3701da

Contrast

#da0137 as textRatioAAAA largeAAAFix
Aaon white
5.2:1passpassfail
  • AAA: use #b2012d as the text (7.15:1)
Aaon black
4.04:1failpassfail
  • AA: use #e9013b as the text (4.53:1)
  • AAA: use #fe5d85 as the text (7.12:1)
  • AA: or shift the background to #f0f0f0 (4.56:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #da0137 as the background.

Brands using this color

Fonts for this mood

#da0137 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #da0137
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 #da0137 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/da0137-c49ca1-62cb7e-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