Color

#668bf0

#668bf0
hex#668bf0
rgbrgb(102, 139, 240)
hslhsl(224, 82%, 67%)
oklchoklch(0.657 0.156 266.9)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.2758

Colors that go with #668bf0

Charcoal, Tomato 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 →

#f0cb66

#66d0f0 · #8666f0

#f0668b · #8bf066

Split-complementary

Open in tool →

#f08666 · #d0f066

#f066d0 · #f0cb66 · #66f086

Contrast

#668bf0 as textRatioAAAA largeAAAFix
Aaon white
3.22:1failpassfail
  • AA: use #416eec as the text (4.5:1)
  • AAA: use #1548d5 as the text (7.19:1)
  • AA: or shift the background to #292929 (4.51:1)
Aaon black
6.52:1passpassfail
  • AAA: use #6f92f1 as the text (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #668bf0 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

#668bf0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #668bf0
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 #668bf0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/668bf0-9ca2c4-df724e-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