Color

#dd1903

#dd1903
hex#dd1903
rgbrgb(221, 25, 3)
hslhsl(6, 97%, 44%)
oklchoklch(0.571 0.225 30.4)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1607

Colors that go with #dd1903

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 →

#03c7dd

#dd035a · #dd8603

#03dd19 · #1903dd

Split-complementary

Open in tool →

#03dd86 · #035add

#5add03 · #03c7dd · #8603dd

Contrast

#dd1903 as textRatioAAAA largeAAAFix
Aaon white
4.98:1passpassfail
  • AAA: use #b01403 as the text (7.12:1)
Aaon black
4.21:1failpassfail
  • AA: use #e71a04 as the text (4.55:1)
  • AAA: use #fc6554 as the text (7.13:1)
  • AA: or shift the background to #f5f5f5 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #dd1903 as the background.

Brands using this color

Fonts for this mood

#dd1903 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #dd1903
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 #dd1903 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/dd1903-c4a59c-62cba3-2d271f-f1e9ec?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