Color

#51013e

#51013e
hex#51013e
rgbrgb(81, 1, 62)
hslhsl(314, 98%, 16%)
oklchoklch(0.294 0.125 341.2)
Closest name: Velvet Cosmos (#441144)Relative luminance 0.0212

Colors that go with #51013e

Crimson, Denim and Sea Green lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#015113

#3b0151 · #510116

#3e5101 · #013e51

Split-complementary

Open in tool →

#165101 · #01513b

#513b01 · #015113 · #011651

Contrast

#51013e as textRatioAAAA largeAAAFix
Aaon white
14.75:1passpasspassPasses AAA — no fix needed.
Aaon black
1.42:1failfailfail
  • AA: use #d902a7 as the text (4.52:1)
  • AAA: use #fd49d3 as the text (7.07:1)
  • AA: or shift the background to #8f8f8f (4.56:1)
  • AAA: or shift the background to #b3b3b3 (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #51013e 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

#51013e reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #51013e
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #51013e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/51013e-c19fb5-7ccb62-2d1f24-efe9f1?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