Color

#ab031c

#ab031c
hex#ab031c
rgbrgb(171, 3, 28)
hslhsl(351, 97%, 34%)
oklchoklch(0.468 0.188 24.6)
Closest name: All Systems Red (#b30103)Relative luminance 0.0881

Tints & shades

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

Harmonies

Complementary

Open in tool →

#03ab92

#ab0370 · #ab3d03

#1cab03 · #031cab

Split-complementary

Open in tool →

#03ab3d · #0370ab

#70ab03 · #03ab92 · #3d03ab

Contrast

#ab031c as textRatioAAAA largeAAAFix
Aaon white
7.6:1passpasspassPasses AAA — no fix needed.
Aaon black
2.76:1failfailfail
  • AA: use #ec0426 as the text (4.61:1)
  • AAA: use #fd5e76 as the text (7.04:1)
  • AA: or shift the background to #c9c9c9 (4.59:1)
  • AAA: or shift the background to #f7f7f7 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ab031c as the background.

Brands using this color

Fonts for this mood

#ab031c reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ab031c
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 #ab031c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ab031c-c49c9e-62cb89-2d231f-f1e9ee?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