Color

#540d53

#540d53
hex#540d53
rgbrgb(84, 13, 83)
hslhsl(301, 73%, 19%)
oklchoklch(0.321 0.131 328.7)
Closest name: Cosmic Explorer (#551155)Relative luminance 0.028

Colors that go with #540d53

Sea Green, Crimson and Denim 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 →

#0d540e

#320d54 · #540d2f

#53540d · #0d5354

Split-complementary

Open in tool →

#2f540d · #0d5432

#54320d · #0d540e · #0d2f54

Contrast

#540d53 as textRatioAAAA largeAAAFix
Aaon white
13.47:1passpasspassPasses AAA — no fix needed.
Aaon black
1.56:1failfailfail
  • AA: use #cb20c8 as the text (4.58:1)
  • AAA: use #e65ce3 as the text (7:1)
  • AA: or shift the background to #969696 (4.55:1)
  • AAA: or shift the background to #bdbdbd (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #540d53 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

#540d53 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #540d53
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 #540d53 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/540d53-c19fbc-93cb62-2d1f27-ede9f1?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