Color

#d30318

#d30318
hex#d30318
rgbrgb(211, 3, 24)
hslhsl(354, 97%, 42%)
oklchoklch(0.546 0.221 26.9)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1398

Colors that go with #d30318

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 →

#03d3be

#d30380 · #d35603

#18d303 · #0318d3

Split-complementary

Open in tool →

#03d356 · #0380d3

#80d303 · #03d3be · #5603d3

Contrast

#d30318 as textRatioAAAA largeAAAFix
Aaon white
5.53:1passpassfail
  • AAA: use #b50315 as the text (7.03:1)
Aaon black
3.8:1failpassfail
  • AA: use #ec041b as the text (4.6:1)
  • AAA: use #fd5e6e as the text (7:1)
  • AA: or shift the background to #e8e8e8 (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #d30318 as the background.

Brands using this color

Fonts for this mood

#d30318 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d30318
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 #d30318 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d30318-c49d9c-62cb8e-2d241f-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