Color

#596378

#596378
hex#596378
rgbrgb(89, 99, 120)
hslhsl(221, 15%, 41%)
oklchoklch(0.499 0.036 265.1)
Closest name: Admiral Blue (#50647f)Relative luminance 0.124

Colors that go with #596378

Charcoal, Sea Green and Amber 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 #596378

Tints & shades

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

Harmonies

Complementary

Open in tool →

#786e59

#597278 · #5f5978

#785963 · #637859

Split-complementary

Open in tool →

#785f59 · #727859

#785972 · #786e59 · #59785f

Contrast

#596378 as textRatioAAAA largeAAAFix
Aaon white
6.03:1passpassfail
  • AAA: use #50596d as the text (7.02:1)
Aaon black
3.48:1failpassfail
  • AA: use #6a7690 as the text (4.61:1)
  • AAA: use #8d96aa as the text (7.08:1)
  • AA: or shift the background to #e0e0e0 (4.57:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #596378 as the background.

Brands using this color

mcpConnect your agent — build around #596378
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 #596378 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/596378-9ca4c4-df6b4e-211f2d-e9eff1?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