Color

#540323

#540323
hex#540323
rgbrgb(84, 3, 35)
hslhsl(336, 93%, 17%)
oklchoklch(0.289 0.112 5.5)
Closest name: What We Do in the Shadows (#441122)Relative luminance 0.0207

Colors that go with #540323

Steel Blue, Teal 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 →

#035433

#54034c · #540b03

#235403 · #032354

Split-complementary

Open in tool →

#03540b · #034c54

#4c5403 · #035433 · #0b0354

Contrast

#540323 as textRatioAAAA largeAAAFix
Aaon white
14.85:1passpasspassPasses AAA — no fix needed.
Aaon black
1.41:1failfailfail
  • AA: use #e70862 as the text (4.61:1)
  • AAA: use #f95d9b as the text (7.07:1)
  • AA: or shift the background to #8f8f8f (4.59:1)
  • AAA: or shift the background to #b3b3b3 (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #540323 as the background.

Brands using this color

Fonts for this mood

#540323 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #540323
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 #540323 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/540323-c49ca7-62cb6e-2d201f-f1e9f0?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