Color

#b11902

#b11902
hex#b11902
rgbrgb(177, 25, 2)
hslhsl(8, 98%, 35%)
oklchoklch(0.487 0.187 31.2)
Closest name: All Systems Red (#b30103)Relative luminance 0.1005

Colors that go with #b11902

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 →

#0299b1

#b10242 · #b17102

#02b119 · #1902b1

Split-complementary

Open in tool →

#02b171 · #0242b1

#42b102 · #0299b1 · #7102b1

Contrast

#b11902 as textRatioAAAA largeAAAFix
Aaon white
6.98:1passpassfail
  • AAA: use #ac1802 as the text (7.28:1)
Aaon black
3.01:1failpassfail
  • AA: use #e82102 as the text (4.65:1)
  • AAA: use #fd664e as the text (7.19:1)
  • AA: or shift the background to #d1d1d1 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b11902 as the background.

Brands using this color

Fonts for this mood

#b11902 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b11902
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 #b11902 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b11902-c4a69c-62cba6-2d271f-f1e9ec?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