Color

#667ecc

#667ecc
hex#667ecc
rgbrgb(102, 126, 204)
hslhsl(226, 50%, 60%)
oklchoklch(0.609 0.122 269.6)
Closest name: Flood (#6677bb)Relative luminance 0.2211

Colors that go with #667ecc

Charcoal, Sea Green 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 →

#ccb466

#66b1cc · #8166cc

#cc667e · #7ecc66

Split-complementary

Open in tool →

#cc8166 · #b1cc66

#cc66b1 · #ccb466 · #66cc81

Contrast

#667ecc as textRatioAAAA largeAAAFix
Aaon white
3.87:1failpassfail
  • AA: use #5771c7 as the text (4.57:1)
  • AAA: use #3852a8 as the text (7.14:1)
  • AA: or shift the background to #171717 (4.63:1)
Aaon black
5.42:1passpassfail
  • AAA: use #8194d5 as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #667ecc 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

#667ecc reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #667ecc
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 #667ecc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/667ecc-9ca1c4-df774e-221f2d-e9eff1?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