Color

#5b8b8a

#5b8b8a
hex#5b8b8a
rgbrgb(91, 139, 138)
hslhsl(179, 21%, 45%)
oklchoklch(0.602 0.052 194.2)
Closest name: Arctic (#648589)Relative luminance 0.2252

Colors that go with #5b8b8a

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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#8b5b5b

#5b8b72 · #5b748b

#8a5b8b · #8b8a5b

Split-complementary

Open in tool →

#8b5b74 · #8b725b

#725b8b · #8b5b5b · #748b5b

Contrast

#5b8b8a as textRatioAAAA largeAAAFix
Aaon white
3.81:1failpassfail
  • AA: use #517b7b as the text (4.7:1)
  • AAA: use #3c5d5c as the text (7.21:1)
  • AA: or shift the background to #1a1a1a (4.56:1)
Aaon black
5.5:1passpassfail

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5b8b8a 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 #5b8b8a
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 #5b8b8a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5b8b8a-a2bbbe-d45996-1f272d-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