Color

#d23404

#d23404
hex#d23404
rgbrgb(210, 52, 4)
hslhsl(14, 96%, 42%)
oklchoklch(0.568 0.2 34.4)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1617

Colors that go with #d23404

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 →

#04a2d2

#d2043b · #d29b04

#04d234 · #3404d2

Split-complementary

Open in tool →

#04d29b · #043bd2

#3bd204 · #04a2d2 · #9b04d2

Contrast

#d23404 as textRatioAAAA largeAAAFix
Aaon white
4.96:1passpassfail
  • AAA: use #a52903 as the text (7.2:1)
Aaon black
4.23:1failpassfail
  • AA: use #dc3704 as the text (4.59:1)
  • AAA: use #fb6537 as the text (7.02:1)
  • AA: or shift the background to #f5f5f5 (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 #d23404 as the background.

Brands using this color

Fonts for this mood

#d23404 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d23404
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 #d23404 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d23404-c4aa9c-62cbb1-2d291f-f1e9eb?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