Color

#596373

#596373
hex#596373
rgbrgb(89, 99, 115)
hslhsl(217, 13%, 40%)
oklchoklch(0.497 0.028 259.8)
Closest name: Concrete Landscape (#5c606e)Relative luminance 0.1229

Colors that go with #596373

Charcoal, Champagne 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.

Real palettes that use #596373

Tints & shades

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

Harmonies

Complementary

Open in tool →

#736959

#597073 · #5c5973

#735963 · #637359

Split-complementary

Open in tool →

#735c59 · #707359

#735970 · #736959 · #59735c

Contrast

#596373 as textRatioAAAA largeAAAFix
Aaon white
6.07:1passpassfail
  • AAA: use #505968 as the text (7.07:1)
Aaon black
3.46:1failpassfail
  • AA: use #6a778a as the text (4.62:1)
  • AAA: use #8c96a6 as the text (7.03:1)
  • AA: or shift the background to #dedede (4.52:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #596373 as the background.

Brands using this color

mcpConnect your agent — build around #596373
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 #596373 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/596373-9ca7c4-df624e-201f2d-e9f0f1?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