Color

#d42525

#d42525
hex#d42525
rgbrgb(212, 37, 37)
hslhsl(0, 70%, 49%)
oklchoklch(0.562 0.209 27.3)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1545

Colors that go with #d42525

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 →

#25d4d4

#d4257d · #d47d25

#25d425 · #2525d4

Split-complementary

Open in tool →

#25d47d · #257dd4

#7dd425 · #25d4d4 · #7d25d4

Contrast

#d42525 as textRatioAAAA largeAAAFix
Aaon white
5.13:1passpassfail
  • AAA: use #ad1f1f as the text (7.02:1)
Aaon black
4.09:1failpassfail
  • AA: use #db3333 as the text (4.53:1)
  • AAA: use #e77474 as the text (7.15:1)
  • AA: or shift the background to #f0f0f0 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #d42525 as the background.

Brands using this color

Fonts for this mood

#d42525 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d42525
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 #d42525 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d42525-c4a19c-62cb98-2d251f-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