Color

#d52d0b

#d52d0b
hex#d52d0b
rgbrgb(213, 45, 11)
hslhsl(10, 90%, 44%)
oklchoklch(0.568 0.207 32.4)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1605

Colors that go with #d52d0b

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 →

#0bb4d5

#d50b4f · #d5920b

#0bd52d · #2d0bd5

Split-complementary

Open in tool →

#0bd592 · #0b4fd5

#4fd50b · #0bb4d5 · #920bd5

Contrast

#d52d0b as textRatioAAAA largeAAAFix
Aaon white
4.99:1passpassfail
  • AAA: use #aa2409 as the text (7.08:1)
Aaon black
4.21:1failpassfail
  • AA: use #df2f0c as the text (4.55:1)
  • AAA: use #f6684c as the text (7:1)
  • AA: or shift the background to #f5f5f5 (4.58:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #d52d0b as the background.

Brands using this color

Fonts for this mood

#d52d0b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d52d0b
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 #d52d0b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d52d0b-c4a79c-62cbaa-2d281f-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