Color

#b50d29

#b50d29
hex#b50d29
rgbrgb(181, 13, 41)
hslhsl(350, 87%, 38%)
oklchoklch(0.492 0.193 22.2)
Closest name: Akai Red (#bc012e)Relative luminance 0.1027

Colors that go with #b50d29

Royal Blue, Steel Blue and Teal 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 →

#0db599

#b50d7d · #b5450d

#29b50d · #0d29b5

Split-complementary

Open in tool →

#0db545 · #0d7db5

#7db50d · #0db599 · #450db5

Contrast

#b50d29 as textRatioAAAA largeAAAFix
Aaon white
6.88:1passpassfail
  • AAA: use #b00c28 as the text (7.17:1)
Aaon black
3.05:1failpassfail
  • AA: use #ea1034 as the text (4.62:1)
  • AAA: use #f4667e as the text (7.05:1)
  • AA: or shift the background to #d1d1d1 (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 #b50d29 as the background.

Brands using this color

Fonts for this mood

#b50d29 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b50d29
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 #b50d29 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b50d29-c49c9e-62cb87-2d231f-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