Color

#511d01

#511d01
hex#511d01
rgbrgb(81, 29, 1)
hslhsl(21, 98%, 16%)
oklchoklch(0.306 0.087 44.7)
Closest name: Evil Cigar (#522000)Relative luminance 0.0263

Tints & shades

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

Harmonies

Complementary

Open in tool →

#013551

#51010d · #514501

#01511d · #1d0151

Split-complementary

Open in tool →

#015145 · #010d51

#0d5101 · #013551 · #450151

Contrast

#511d01 as textRatioAAAA largeAAAFix
Aaon white
13.76:1passpasspassPasses AAA — no fix needed.
Aaon black
1.53:1failfailfail
  • AA: use #cf4a02 as the text (4.63:1)
  • AAA: use #fd6412 as the text (7.01:1)
  • AA: or shift the background to #949494 (4.54:1)
  • AAA: or shift the background to #bababa (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 #511d01 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

#511d01 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #511d01
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 #511d01 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/511d01-c4af9c-62cbbd-2d2a1f-f1e9ea?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