Color

#669cfa

#669cfa
hex#669cfa
rgbrgb(102, 156, 250)
hslhsl(218, 94%, 69%)
oklchoklch(0.697 0.15 260.8)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.335

Tints & shades

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

Harmonies

Complementary

Open in tool →

#fac466

#66e6fa · #7966fa

#fa669c · #9cfa66

Split-complementary

Open in tool →

#fa7966 · #e6fa66

#fa66e6 · #fac466 · #66fa79

Contrast

#669cfa as textRatioAAAA largeAAAFix
Aaon white
2.73:1failfailfail
  • AA: use #1b6cf8 as the text (4.62:1)
  • AAA: use #064ecb as the text (7.09:1)
  • AA: or shift the background to #333333 (4.63:1)
  • AAA: or shift the background to #0f0f0f (7.03:1)
Aaon black
7.7:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #669cfa 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

#669cfa reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #669cfa
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 #669cfa and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/669cfa-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