Color

#b21056

#b21056
hex#b21056
rgbrgb(178, 16, 86)
hslhsl(334, 84%, 38%)
oklchoklch(0.497 0.192 3.9)
Closest name: Fancy Red Wine (#b40441)Relative luminance 0.1051

Colors that go with #b21056

Teal, Denim and Royal 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 →

#10b26c

#b210a7 · #b21a10

#56b210 · #1056b2

Split-complementary

Open in tool →

#10b21a · #10a7b2

#a7b210 · #10b26c · #1a10b2

Contrast

#b21056 as textRatioAAAA largeAAAFix
Aaon white
6.77:1passpassfail
  • AAA: use #ae0f54 as the text (7.01:1)
Aaon black
3.1:1failpassfail
  • AA: use #e1146d as the text (4.52:1)
  • AAA: use #f264a1 as the text (7.11:1)
  • AA: or shift the background to #d4d4d4 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b21056 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#b21056 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b21056
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 #b21056 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b21056-c49ca9-62cb6b-2d1f1f-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