Color

#510b2c

#510b2c
hex#510b2c
rgbrgb(81, 11, 44)
hslhsl(332, 76%, 18%)
oklchoklch(0.293 0.105 357.7)
Closest name: Blackberry (#43182f)Relative luminance 0.0217

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0b5130

#510b4e · #510d0b

#2c510b · #0b2c51

Split-complementary

Open in tool →

#0b510d · #0b4e51

#4e510b · #0b5130 · #0d0b51

Contrast

#510b2c as textRatioAAAA largeAAAFix
Aaon white
14.64:1passpasspassPasses AAA — no fix needed.
Aaon black
1.43:1failfailfail
  • AA: use #e01f79 as the text (4.64:1)
  • AAA: use #eb6ba7 as the text (7.19:1)
  • AA: or shift the background to #8f8f8f (4.53:1)
  • AAA: or shift the background to #b5b5b5 (7.14:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #510b2c 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

#510b2c reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #510b2c
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 #510b2c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/510b2c-c49caa-62cb67-2d1f20-f1e9f1?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