Color

#5bb3b2

#5bb3b2
hex#5bb3b2
rgbrgb(91, 179, 178)
hslhsl(179, 37%, 53%)
oklchoklch(0.712 0.085 194.4)
Closest name: Emerald Bliss (#4cbdac)Relative luminance 0.3768

Colors that go with #5bb3b2

Charcoal, Blue and Crimson 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 →

#b35b5c

#5bb386 · #5b89b3

#b25bb3 · #b3b25b

Split-complementary

Open in tool →

#b35b89 · #b3865b

#865bb3 · #b35b5c · #89b35b

Contrast

#5bb3b2 as textRatioAAAA largeAAAFix
Aaon white
2.46:1failfailfail
  • AA: use #3b8180 as the text (4.53:1)
  • AAA: use #2b5e5d as the text (7.34:1)
  • AA: or shift the background to #3b3b3b (4.55:1)
  • AAA: or shift the background to #1a1a1a (7.07:1)
Aaon black
8.54:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #5bb3b2 as the background.

Brands using this color

mcpConnect your agent — build around #5bb3b2
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 #5bb3b2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5bb3b2-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