Color

#b10d02

#b10d02
hex#b10d02
rgbrgb(177, 13, 2)
hslhsl(4, 98%, 35%)
oklchoklch(0.482 0.192 29.9)
Closest name: All Systems Red (#b30103)Relative luminance 0.0964

Tints & shades

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

Harmonies

Complementary

Open in tool →

#02a5b1

#b1024e · #b16502

#02b10d · #0d02b1

Split-complementary

Open in tool →

#02b165 · #024eb1

#4eb102 · #02a5b1 · #6502b1

Contrast

#b10d02 as textRatioAAAA largeAAAFix
Aaon white
7.17:1passpasspassPasses AAA — no fix needed.
Aaon black
2.93:1failfailfail
  • AA: use #e81202 as the text (4.52:1)
  • AAA: use #fd6358 as the text (7.1:1)
  • AA: or shift the background to #cfcfcf (4.6:1)
  • AAA: or shift the background to #ffffff (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #b10d02 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

#b10d02 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #b10d02
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #b10d02 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/b10d02-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