Color

#668fcc

#668fcc
hex#668fcc
rgbrgb(102, 143, 204)
hslhsl(216, 50%, 60%)
oklchoklch(0.646 0.103 258.1)
Closest name: Blue Bay (#619ad6)Relative luminance 0.2683

Tints & shades

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

Harmonies

Complementary

Open in tool →

#cca366

#66c2cc · #7066cc

#cc668f · #8fcc66

Split-complementary

Open in tool →

#cc7066 · #c2cc66

#cc66c2 · #cca366 · #66cc70

Contrast

#668fcc as textRatioAAAA largeAAAFix
Aaon white
3.3:1failpassfail
  • AA: use #4476c1 as the text (4.56:1)
  • AAA: use #305791 as the text (7.25:1)
  • AA: or shift the background to #262626 (4.59:1)
Aaon black
6.37:1passpassfail
  • AAA: use #7197d0 as the text (7.04:1)

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

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

mcpConnect your agent — build around #668fcc
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 #668fcc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/668fcc-9ca7c4-df5f4e-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