Color

#5b8586

#5b8586
hex#5b8586
rgbrgb(91, 133, 134)
hslhsl(181, 19%, 44%)
oklchoklch(0.586 0.046 197.8)
Closest name: Arctic (#648589)Relative luminance 0.2072

Colors that go with #5b8586

Charcoal, Copper and Champagne 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 #5b8586

Tints & shades

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

Harmonies

Complementary

Open in tool →

#865c5b

#5b8671 · #5b6f86

#865b85 · #85865b

Split-complementary

Open in tool →

#865b6f · #86715b

#715b86 · #865c5b · #6f865b

Contrast

#5b8586 as textRatioAAAA largeAAAFix
Aaon white
4.08:1failpassfail
  • AA: use #557c7c as the text (4.6:1)
  • AAA: use #405e5e as the text (7.05:1)
  • AA: or shift the background to #141414 (4.51:1)
Aaon black
5.14:1passpassfail
  • AAA: use #709d9e as the text (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b8586 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

mcpConnect your agent — build around #5b8586
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 #5b8586 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b8586-a2babe-d45992-1f272d-e9f1ed?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