Color

#d21922

#d21922
hex#d21922
rgbrgb(210, 25, 34)
hslhsl(357, 79%, 46%)
oklchoklch(0.551 0.213 26.5)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1451

Colors that go with #d21922

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 →

#19d2c9

#d2197f · #d26c19

#22d219 · #1922d2

Split-complementary

Open in tool →

#19d26c · #197fd2

#7fd219 · #19d2c9 · #6c19d2

Contrast

#d21922 as textRatioAAAA largeAAAFix
Aaon white
5.38:1passpassfail
  • AAA: use #ad141c as the text (7.26:1)
Aaon black
3.9:1failpassfail
  • AA: use #e51f29 as the text (4.56:1)
  • AAA: use #ee6d73 as the text (7.07:1)
  • AA: or shift the background to #ebebeb (4.51:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #d21922 as the background.

Brands using this color

Fonts for this mood

#d21922 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #d21922
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 #d21922 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/d21922-c49f9c-62cb93-2d251f-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