Color

#668bcc

#668bcc
hex#668bcc
rgbrgb(102, 139, 204)
hslhsl(218, 50%, 60%)
oklchoklch(0.637 0.107 261.2)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2565

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cca766

#66becc · #7466cc

#cc668b · #8bcc66

Split-complementary

Open in tool →

#cc7466 · #becc66

#cc66be · #cca766 · #66cc74

Contrast

#668bcc as textRatioAAAA largeAAAFix
Aaon white
3.43:1failpassfail
  • AA: use #4774c2 as the text (4.62:1)
  • AAA: use #335899 as the text (7.01:1)
  • AA: or shift the background to #242424 (4.53:1)
Aaon black
6.13:1passpassfail
  • AAA: use #7597d1 as the text (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #668bcc 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

#668bcc reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #668bcc
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #668bcc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/668bcc-9ca6c4-df644e-201f2d-e9f0f1?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