Color

#b3430f

#b3430f
hex#b3430f
rgbrgb(179, 67, 15)
hslhsl(19, 85%, 38%)
oklchoklch(0.531 0.157 40.7)
Closest name: Rust (#b7410e)Relative luminance 0.1363

Colors that go with #b3430f

Crimson, Denim and Sea Green 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 #b3430f

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0f7fb3

#b30f2d · #b3950f

#0fb343 · #430fb3

Split-complementary

Open in tool →

#0fb395 · #0f2db3

#2db30f · #0f7fb3 · #950fb3

Contrast

#b3430f as textRatioAAAA largeAAAFix
Aaon white
5.64:1passpassfail
  • AAA: use #97380c as the text (7.27:1)
Aaon black
3.73:1failpassfail
  • AA: use #cb4b10 as the text (4.55:1)
  • AAA: use #ef7339 as the text (7.18:1)
  • AA: or shift the background to #e6e6e6 (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 #b3430f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b3430f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b3430f
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 #b3430f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b3430f-c4ad9c-62cbb9-2d2a1f-f1e9eb?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