Color

#5bb387

#5bb387
hex#5bb387
rgbrgb(91, 179, 135)
hslhsl(150, 37%, 53%)
oklchoklch(0.7 0.108 160)
Closest name: Electra (#55b492)Relative luminance 0.3621

Colors that go with #5bb387

Charcoal, Dark Olive Green and Midnight Blue 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 #5bb387

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b35b87

#5bb35b · #5bb3b3

#875bb3 · #b3875b

Split-complementary

Open in tool →

#b35bb3 · #b35b5b

#5b5bb3 · #b35b87 · #b3b35b

Contrast

#5bb387 as textRatioAAAA largeAAAFix
Aaon white
2.55:1failfailfail
  • AA: use #3b815e as the text (4.68:1)
  • AAA: use #2d6247 as the text (7.12:1)
  • AA: or shift the background to #383838 (4.6:1)
  • AAA: or shift the background to #171717 (7.04:1)
Aaon black
8.24:1passpasspassPasses 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 #5bb387 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #5bb387
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 #5bb387 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/5bb387-a2beb3-d459d2-1f2d2c-e9f1ea?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