Color

#da103c

#da103c
hex#da103c
rgbrgb(218, 16, 60)
hslhsl(347, 86%, 46%)
oklchoklch(0.566 0.222 19.7)
Closest name: crimson (#dc143c)Relative luminance 0.156

Colors that go with #da103c

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 →

#10daae

#da10a1 · #da4a10

#3cda10 · #103cda

Split-complementary

Open in tool →

#10da4a · #10a1da

#a1da10 · #10daae · #4a10da

Contrast

#da103c as textRatioAAAA largeAAAFix
Aaon white
5.1:1passpassfail
  • AAA: use #af0d30 as the text (7.18:1)
Aaon black
4.12:1failpassfail
  • AA: use #e81140 as the text (4.59:1)
  • AAA: use #f46786 as the text (7.13:1)
  • AA: or shift the background to #f2f2f2 (4.55:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #da103c as the background.

Brands using this color

Fonts for this mood

#da103c reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #da103c
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 #da103c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/da103c-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