Color

#b42d2d

#b42d2d
hex#b42d2d
rgbrgb(180, 45, 45)
hslhsl(0, 60%, 44%)
oklchoklch(0.511 0.172 25.7)
Closest name: firebrick (#b22222)Relative luminance 0.1177

Colors that go with #b42d2d

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.

Real palettes that use #b42d2d

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#2db4b4

#b42d70 · #b4702d

#2db42d · #2d2db4

Split-complementary

Open in tool →

#2db470 · #2d70b4

#70b42d · #2db4b4 · #702db4

Contrast

#b42d2d as textRatioAAAA largeAAAFix
Aaon white
6.26:1passpassfail
  • AAA: use #a32929 as the text (7.23:1)
Aaon black
3.35:1failpassfail
  • AA: use #d04343 as the text (4.57:1)
  • AAA: use #dd7878 as the text (7.03:1)
  • AA: or shift the background to #dbdbdb (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b42d2d as the background.

Brands using this color

Fonts for this mood

#b42d2d reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b42d2d
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 #b42d2d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b42d2d-c4a19c-62cb98-2d251f-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