Color

#da102b

#da102b
hex#da102b
rgbrgb(218, 16, 43)
hslhsl(352, 86%, 46%)
oklchoklch(0.564 0.223 24.1)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1545

Colors that go with #da102b

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 →

#10dabf

#da1090 · #da5a10

#2bda10 · #102bda

Split-complementary

Open in tool →

#10da5a · #1090da

#90da10 · #10dabf · #5a10da

Contrast

#da102b as textRatioAAAA largeAAAFix
Aaon white
5.13:1passpassfail
  • AAA: use #af0d23 as the text (7.23:1)
Aaon black
4.09:1failpassfail
  • AA: use #e8112e as the text (4.55:1)
  • AAA: use #f4677a as the text (7.07:1)
  • AA: or shift the background to #f0f0f0 (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #da102b as the background.

Brands using this color

Fonts for this mood

#da102b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #da102b
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 #da102b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/da102b-c49c9d-62cb8a-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