Color

#500b40

#500b40
hex#500b40
rgbrgb(80, 11, 64)
hslhsl(314, 76%, 18%)
oklchoklch(0.3 0.116 339.6)
Closest name: Velvet Cosmos (#441144)Relative luminance 0.0231

Colors that go with #500b40

Crimson, Sea Green and Blue 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 →

#0b511b

#3e0b51 · #510b1e

#41510b · #0b4151

Split-complementary

Open in tool →

#1e510b · #0b513e

#513e0b · #0b511b · #0b1e51

Contrast

#500b40 as textRatioAAAA largeAAAFix
Aaon white
14.35:1passpasspassPasses AAA — no fix needed.
Aaon black
1.46:1failfailfail
  • AA: use #d31da8 as the text (4.51:1)
  • AAA: use #ea62ca as the text (7.1:1)
  • AA: or shift the background to #919191 (4.55:1)
  • AAA: or shift the background to #b5b5b5 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #500b40 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

#500b40 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #500b40
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 #500b40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/500b40-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