Color

#a6031b

#a6031b
hex#a6031b
rgbrgb(166, 3, 27)
hslhsl(351, 96%, 33%)
oklchoklch(0.458 0.184 24.5)
Closest name: Bleeding Crimson (#9b1414)Relative luminance 0.0825

Tints & shades

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

Harmonies

Complementary

Open in tool →

#03a58d

#a5036c · #a53c03

#1ca503 · #031ca5

Split-complementary

Open in tool →

#03a53c · #036ca5

#6ca503 · #03a58d · #3c03a5

Contrast

#a6031b as textRatioAAAA largeAAAFix
Aaon white
7.92:1passpasspassPasses AAA — no fix needed.
Aaon black
2.65:1failfailfail
  • AA: use #eb0527 as the text (4.58:1)
  • AAA: use #fc5f77 as the text (7.04:1)
  • AA: or shift the background to #c4c4c4 (4.54:1)
  • AAA: or shift the background to #f2f2f2 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a6031b 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

#a6031b reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a6031b
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 #a6031b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a6031b-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