Color

#66b293

#66b293
hex#66b293
rgbrgb(102, 178, 147)
hslhsl(156, 33%, 55%)
oklchoklch(0.705 0.089 165.8)
Closest name: Electra (#55b492)Relative luminance 0.3677

Colors that go with #66b293

Charcoal, Cornflower Blue and 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#b26685

#66b26e · #66abb2

#9466b2 · #b29466

Split-complementary

Open in tool →

#b266ab · #b26e66

#6e66b2 · #b26685 · #abb266

Contrast

#66b293 as textRatioAAAA largeAAAFix
Aaon white
2.51:1failfailfail
  • AA: use #418167 as the text (4.6:1)
  • AAA: use #32624f as the text (7.01:1)
  • AA: or shift the background to #383838 (4.66:1)
  • AAA: or shift the background to #171717 (7.13:1)
Aaon black
8.35:1passpasspassPasses 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 #66b293 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 #66b293
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 #66b293 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66b293-a2beb6-d459c6-1f2d2d-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