Color

#666993

#666993
hex#666993
rgbrgb(102, 105, 147)
hslhsl(236, 18%, 49%)
oklchoklch(0.535 0.066 280.8)
Closest name: Dark Prince (#6b6c89)Relative luminance 0.1503

Colors that go with #666993

Charcoal, Dark Olive Green 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.

Real palettes that use #666993

Tints & shades

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

Harmonies

Complementary

Open in tool →

#939066

#668093 · #7a6693

#936669 · #699366

Split-complementary

Open in tool →

#937a66 · #809366

#936680 · #939066 · #66937a

Contrast

#666993 as textRatioAAAA largeAAAFix
Aaon white
5.24:1passpassfail
  • AAA: use #545678 as the text (7.05:1)
Aaon black
4.01:1failpassfail
  • AA: use #6f729b as the text (4.56:1)
  • AAA: use #9395b4 as the text (7.2:1)
  • AA: or shift the background to #f0f0f0 (4.6:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #666993 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 #666993
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 #666993 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/666993-9e9cc4-df8f4e-241f2d-e9eef1?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