Color

#c21957

#c21957
hex#c21957
rgbrgb(194, 25, 87)
hslhsl(338, 77%, 43%)
oklchoklch(0.531 0.2 7.4)
Closest name: Akari Red (#c90b42)Relative luminance 0.1285

Colors that go with #c21957

Steel Blue, Teal and Amber 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 →

#19c284

#c219ac · #c23019

#57c219 · #1957c2

Split-complementary

Open in tool →

#19c230 · #19acc2

#acc219 · #19c284 · #3019c2

Contrast

#c21957 as textRatioAAAA largeAAAFix
Aaon white
5.88:1passpassfail
  • AAA: use #ac164d as the text (7.06:1)
Aaon black
3.57:1failpassfail
  • AA: use #e21d65 as the text (4.6:1)
  • AAA: use #ec6a9a as the text (7.09:1)
  • AA: or shift the background to #e3e3e3 (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 #c21957 as the background.

Brands using this color

Fonts for this mood

#c21957 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #c21957
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 #c21957 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/c21957-c49ca6-62cb72-2d201f-f1e9f0?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