Color

#b02117

#b02117
hex#b02117
rgbrgb(176, 33, 23)
hslhsl(4, 77%, 39%)
oklchoklch(0.491 0.18 29.4)
Closest name: firebrick (#b22222)Relative luminance 0.1038

Colors that go with #b02117

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 →

#17a6b0

#b01759 · #b06e17

#17b021 · #2117b0

Split-complementary

Open in tool →

#17b06e · #1759b0

#59b017 · #17a6b0 · #6e17b0

Contrast

#b02117 as textRatioAAAA largeAAAFix
Aaon white
6.83:1passpassfail
  • AAA: use #ac2016 as the text (7.07:1)
Aaon black
3.08:1failpassfail
  • AA: use #e22a1d as the text (4.58:1)
  • AAA: use #ec736a as the text (7.23:1)
  • AA: or shift the background to #d4d4d4 (4.61:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b02117 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#b02117 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b02117
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 #b02117 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b02117-c4a39c-62cb9f-2d261f-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