Color

#669df5

#669df5
hex#669df5
rgbrgb(102, 157, 245)
hslhsl(217, 88%, 68%)
oklchoklch(0.697 0.143 259.4)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.3353

Colors that go with #669df5

Charcoal, Amber and Blue 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 →

#f5be66

#66e4f5 · #7666f5

#f5669d · #9df566

Split-complementary

Open in tool →

#f57666 · #e4f566

#f566e4 · #f5be66 · #66f576

Contrast

#669df5 as textRatioAAAA largeAAAFix
Aaon white
2.73:1failfailfail
  • AA: use #1e6ff1 as the text (4.57:1)
  • AAA: use #0c51c0 as the text (7.11:1)
  • AA: or shift the background to #333333 (4.64:1)
  • AAA: or shift the background to #0f0f0f (7.03:1)
Aaon black
7.71:1passpasspassPasses 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 #669df5 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

#669df5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #669df5
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 #669df5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/669df5-9ca7c4-df624e-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