Color

#d5011d

#d5011d
hex#d5011d
rgbrgb(213, 1, 29)
hslhsl(352, 99%, 42%)
oklchoklch(0.55 0.223 26)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1426

Colors that go with #d5011d

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 →

#01d5b9

#d50187 · #d54f01

#1dd501 · #011dd5

Split-complementary

Open in tool →

#01d54f · #0187d5

#87d501 · #01d5b9 · #4f01d5

Contrast

#d5011d as textRatioAAAA largeAAAFix
Aaon white
5.45:1passpassfail
  • AAA: use #b20118 as the text (7.22:1)
Aaon black
3.85:1failpassfail
  • AA: use #ef0121 as the text (4.7:1)
  • AAA: use #fe5d72 as the text (7.02:1)
  • AA: or shift the background to #ebebeb (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 #d5011d as the background.

Brands using this color

Fonts for this mood

#d5011d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d5011d
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 #d5011d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d5011d-c49c9d-62cb8a-2d231f-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