Color

#d10520

#d10520
hex#d10520
rgbrgb(209, 5, 32)
hslhsl(352, 95%, 42%)
oklchoklch(0.543 0.219 25.5)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1377

Colors that go with #d10520

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 →

#05d1b6

#d10586 · #d15005

#20d105 · #0520d1

Split-complementary

Open in tool →

#05d150 · #0586d1

#86d105 · #05d1b6 · #5005d1

Contrast

#d10520 as textRatioAAAA largeAAAFix
Aaon white
5.59:1passpassfail
  • AAA: use #b3051c as the text (7.11:1)
Aaon black
3.75:1failpassfail
  • AA: use #ea0624 as the text (4.55:1)
  • AAA: use #fb6075 as the text (7.03:1)
  • AA: or shift the background to #e8e8e8 (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 #d10520 as the background.

Brands using this color

Fonts for this mood

#d10520 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d10520
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 #d10520 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d10520-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