Color

#66aeb7

#66aeb7
hex#66aeb7
rgbrgb(102, 174, 183)
hslhsl(187, 36%, 56%)
oklchoklch(0.707 0.073 205.9)
Closest name: Blue Eye Samurai (#75aebd)Relative luminance 0.3652

Colors that go with #66aeb7

Charcoal, Burlywood and Copper 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 →

#b77066

#66b798 · #6685b7

#b766ae · #aeb766

Split-complementary

Open in tool →

#b76685 · #b79866

#9866b7 · #b77066 · #85b766

Contrast

#66aeb7 as textRatioAAAA largeAAAFix
Aaon white
2.53:1failfailfail
  • AA: use #407f87 as the text (4.56:1)
  • AAA: use #2f5e65 as the text (7.22:1)
  • AA: or shift the background to #383838 (4.64:1)
  • AAA: or shift the background to #171717 (7.09:1)
Aaon black
8.3:1passpasspassPasses 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 #66aeb7 as the background.

Brands using this color

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

Fonts for this mood

#66aeb7 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #66aeb7
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 #66aeb7 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66aeb7-a2b8be-df4e83-1f262d-e9f1ee?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