Color

#503a3f

#503a3f
hex#503a3f
rgbrgb(80, 58, 63)
hslhsl(346, 16%, 27%)
oklchoklch(0.375 0.032 3.7)
Closest name: Black Truffle (#463d3e)Relative luminance 0.0509

Colors that go with #503a3f

Dark Olive Green, Sea Green and Steel 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.

Real palettes that use #503a3f

Tints & shades

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

Harmonies

Complementary

Open in tool →

#3a504b

#503a4a · #50403a

#3f503a · #3a3f50

Split-complementary

Open in tool →

#3a5040 · #3a4a50

#4a503a · #3a504b · #403a50

Contrast

#503a3f as textRatioAAAA largeAAAFix
Aaon white
10.41:1passpasspassPasses AAA — no fix needed.
Aaon black
2.02:1failfailfail
  • AA: use #946b75 as the text (4.62:1)
  • AAA: use #ae8f96 as the text (7.17:1)
  • AA: or shift the background to #ababab (4.53:1)
  • AAA: or shift the background to #d4d4d4 (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 #503a3f 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

#503a3f reads as warm, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #503a3f
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 #503a3f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/503a3f-c49ca1-62cb80-2d221f-f1e9ef?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