Color

#de2131

#de2131
hex#de2131
rgbrgb(222, 33, 49)
hslhsl(355, 74%, 50%)
oklchoklch(0.579 0.219 24.3)
Closest name: Angry Tomato (#d82029)Relative luminance 0.1684

Colors that go with #de2131

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 →

#21dece

#de218f · #de7021

#31de21 · #2131de

Split-complementary

Open in tool →

#21de70 · #218fde

#8fde21 · #21dece · #7021de

Contrast

#de2131 as textRatioAAAA largeAAAFix
Aaon white
4.81:1passpassfail
  • AAA: use #ad1a26 as the text (7.11:1)
Aaon black
4.37:1failpassfail
  • AA: use #df2a39 as the text (4.53:1)
  • AAA: use #ea717b as the text (7.15:1)
  • AA: or shift the background to #fafafa (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #de2131 as the background.

Brands using this color

Fonts for this mood

#de2131 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #de2131
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 #de2131 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/de2131-c49e9c-62cb8f-2d241f-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