Color

#d23804

#d23804
hex#d23804
rgbrgb(210, 56, 4)
hslhsl(15, 96%, 42%)
oklchoklch(0.571 0.197 35.3)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1654

Colors that go with #d23804

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 →

#049fd2

#d20438 · #d29f04

#04d238 · #3804d2

Split-complementary

Open in tool →

#04d29f · #0438d2

#38d204 · #049fd2 · #9f04d2

Contrast

#d23804 as textRatioAAAA largeAAAFix
Aaon white
4.87:1passpassfail
  • AAA: use #a52c03 as the text (7.09:1)
Aaon black
4.31:1failpassfail
  • AA: use #dc3a04 as the text (4.65:1)
  • AAA: use #fb6837 as the text (7.14:1)
  • AA: or shift the background to #f7f7f7 (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 #d23804 as the background.

Brands using this color

Fonts for this mood

#d23804 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d23804
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 #d23804 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d23804-c4ab9c-62cbb2-2d291f-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