Color

#668dd6

#668dd6
hex#668dd6
rgbrgb(102, 141, 214)
hslhsl(219, 58%, 62%)
oklchoklch(0.646 0.118 262.2)
Closest name: Blue Jay (#5588dd)Relative luminance 0.2673

Colors that go with #668dd6

Charcoal, Medium Sea Green and Amber 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 →

#d6af66

#66c5d6 · #7766d6

#d6668d · #8dd666

Split-complementary

Open in tool →

#d67766 · #c5d666

#d666c5 · #d6af66 · #66d677

Contrast

#668dd6 as textRatioAAAA largeAAAFix
Aaon white
3.31:1failpassfail
  • AA: use #4272cd as the text (4.65:1)
  • AAA: use #2c56a5 as the text (7.04:1)
  • AA: or shift the background to #262626 (4.57:1)
Aaon black
6.35:1passpassfail
  • AAA: use #7296da as the text (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #668dd6 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

#668dd6 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #668dd6
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 #668dd6 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/668dd6-9ca5c4-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