Color

#540d40

#540d40
hex#540d40
rgbrgb(84, 13, 64)
hslhsl(317, 73%, 19%)
oklchoklch(0.31 0.116 342.2)
Closest name: Cosmic Explorer (#551155)Relative luminance 0.0254

Colors that go with #540d40

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 →

#0d5421

#440d54 · #540d1c

#40540d · #0d4054

Split-complementary

Open in tool →

#1c540d · #0d5444

#54440d · #0d5421 · #0d1c54

Contrast

#540d40 as textRatioAAAA largeAAAFix
Aaon white
13.92:1passpasspassPasses AAA — no fix needed.
Aaon black
1.51:1failfailfail
  • AA: use #d421a1 as the text (4.53:1)
  • AAA: use #e765c2 as the text (7.04:1)
  • AA: or shift the background to #949494 (4.59:1)
  • AAA: or shift the background to #b8b8b8 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #540d40 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

#540d40 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #540d40
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 #540d40 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/540d40-c19fb3-77cb62-2d1f23-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