Color

#66898a

#66898a
hex#66898a
rgbrgb(102, 137, 138)
hslhsl(182, 15%, 47%)
oklchoklch(0.604 0.039 198.4)
Closest name: Arctic (#648589)Relative luminance 0.2255

Colors that go with #66898a

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 →

#8a6766

#668a79 · #66778a

#8a6689 · #898a66

Split-complementary

Open in tool →

#8a6677 · #8a7966

#79668a · #8a6766 · #778a66

Contrast

#66898a as textRatioAAAA largeAAAFix
Aaon white
3.81:1failpassfail
  • AA: use #5b7a7b as the text (4.65:1)
  • AAA: use #455d5e as the text (7.05:1)
  • AA: or shift the background to #1a1a1a (4.57:1)
Aaon black
5.51:1passpassfail
  • AAA: use #7b9c9d as the text (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #66898a 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 #66898a
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 #66898a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66898a-a2babe-d45990-1f272d-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