Color

#57375c

#57375c
hex#57375c
rgbrgb(87, 55, 92)
hslhsl(292, 25%, 29%)
oklchoklch(0.39 0.073 322)
Closest name: Long Passionate Night (#5b365e)Relative luminance 0.0553

Colors that go with #57375c

Sea Green, Blue and Copper 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 →

#3c5c37

#45375c · #5c374f

#5c5837 · #375c58

Split-complementary

Open in tool →

#4f5c37 · #375c45

#5c4537 · #3c5c37 · #374f5c

Contrast

#57375c as textRatioAAAA largeAAAFix
Aaon white
9.97:1passpasspassPasses AAA — no fix needed.
Aaon black
2.11:1failfailfail
  • AA: use #9963a1 as the text (4.65:1)
  • AAA: use #b289b8 as the text (7.16:1)
  • AA: or shift the background to #b0b0b0 (4.6:1)
  • AAA: or shift the background to #d9d9d9 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #57375c as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Palettes built around it

Fonts for this mood

#57375c reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #57375c
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 #57375c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/57375c-c09fc1-a3cb62-2d1f29-ece9f1?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