Color

#668bd1

#668bd1
hex#668bd1
rgbrgb(102, 139, 209)
hslhsl(219, 54%, 61%)
oklchoklch(0.639 0.114 262.4)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2589

Tints & shades

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

Harmonies

Complementary

Open in tool →

#d1ac66

#66c1d1 · #7666d1

#d1668b · #8bd166

Split-complementary

Open in tool →

#d17666 · #c1d166

#d166c1 · #d1ac66 · #66d176

Contrast

#668bd1 as textRatioAAAA largeAAAFix
Aaon white
3.4:1failpassfail
  • AA: use #4674c8 as the text (4.57:1)
  • AAA: use #2f559d as the text (7.22:1)
  • AA: or shift the background to #242424 (4.57:1)
Aaon black
6.18:1passpassfail
  • AAA: use #7697d6 as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #668bd1 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

#668bd1 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #668bd1
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 #668bd1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/668bd1-9ca5c4-df664e-211f2d-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