Color

#a01313

#a01313
hex#a01313
rgbrgb(160, 19, 19)
hslhsl(0, 79%, 35%)
oklchoklch(0.452 0.173 27.9)
Closest name: Bleeding Crimson (#9b1414)Relative luminance 0.0799

Tints & shades

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

Harmonies

Complementary

Open in tool →

#13a0a0

#a01359 · #a05913

#13a013 · #1313a0

Split-complementary

Open in tool →

#13a059 · #1359a0

#59a013 · #13a0a0 · #5913a0

Contrast

#a01313 as textRatioAAAA largeAAAFix
Aaon white
8.09:1passpasspassPasses AAA — no fix needed.
Aaon black
2.6:1failfailfail
  • AA: use #e51f1f as the text (4.55:1)
  • AAA: use #ee6d6d as the text (7.04:1)
  • AA: or shift the background to #c2c2c2 (4.54:1)
  • AAA: or shift the background to #f0f0f0 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #a01313 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

#a01313 reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #a01313
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 #a01313 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/a01313-c4a19c-62cb98-2d251f-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