Color

#b01403

#b01403
hex#b01403
rgbrgb(176, 20, 3)
hslhsl(6, 97%, 35%)
oklchoklch(0.482 0.188 30.5)
Closest name: All Systems Red (#b30103)Relative luminance 0.0974

Colors that go with #b01403

Teal, Dark Olive Green and Goldenrod 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 #b01403

Tints & shades

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

Harmonies

Complementary

Open in tool →

#039fb0

#b00348 · #b06b03

#03b014 · #1403b0

Split-complementary

Open in tool →

#03b06b · #0348b0

#48b003 · #039fb0 · #6b03b0

Contrast

#b01403 as textRatioAAAA largeAAAFix
Aaon white
7.12:1passpasspassPasses AAA — no fix needed.
Aaon black
2.95:1failfailfail
  • AA: use #e71a04 as the text (4.55:1)
  • AAA: use #fc6554 as the text (7.13:1)
  • AA: or shift the background to #cfcfcf (4.57:1)
  • AAA: or shift the background to #ffffff (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b01403 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#b01403 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b01403
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 #b01403 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b01403-c4a59c-62cba3-2d271f-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