Color

#d30e03

#d30e03
hex#d30e03
rgbrgb(211, 14, 3)
hslhsl(3, 97%, 42%)
oklchoklch(0.548 0.22 29.7)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1417

Colors that go with #d30e03

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 →

#03c9d3

#d30361 · #d37503

#03d30e · #0e03d3

Split-complementary

Open in tool →

#03d375 · #0361d3

#61d303 · #03c9d3 · #7503d3

Contrast

#d30e03 as textRatioAAAA largeAAAFix
Aaon white
5.48:1passpassfail
  • AAA: use #b00b03 as the text (7.25:1)
Aaon black
3.83:1failpassfail
  • AA: use #ec0f04 as the text (4.64:1)
  • AAA: use #fd665e as the text (7.24:1)
  • AA: or shift the background to #ebebeb (4.59:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #d30e03 as the background.

Brands using this color

Fonts for this mood

#d30e03 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d30e03
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 #d30e03 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d30e03-c4a39c-62cb9d-2d261f-f1e9ed?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