Color

#b01917

#b01917
hex#b01917
rgbrgb(176, 25, 23)
hslhsl(1, 77%, 39%)
oklchoklch(0.486 0.184 28.1)
Closest name: firebrick (#b22222)Relative luminance 0.0999

Colors that go with #b01917

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 →

#17adb0

#b01761 · #b06617

#17b019 · #1917b0

Split-complementary

Open in tool →

#17b066 · #1761b0

#61b017 · #17adb0 · #6617b0

Contrast

#b01917 as textRatioAAAA largeAAAFix
Aaon white
7.01:1passpasspassPasses AAA — no fix needed.
Aaon black
3:1failfailfail
  • AA: use #e22522 as the text (4.52:1)
  • AAA: use #ec716f as the text (7.16:1)
  • AA: or shift the background to #d1d1d1 (4.59:1)
  • AAA: or shift the background to #ffffff (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b01917 as the background.

Brands using this color

Fonts for this mood

#b01917 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b01917
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 #b01917 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b01917-c4a19c-62cb9a-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