Color

#669af5

#669af5
hex#669af5
rgbrgb(102, 154, 245)
hslhsl(218, 88%, 68%)
oklchoklch(0.691 0.146 260.9)
Closest name: cornflowerblue (#6495ed)Relative luminance 0.3253

Colors that go with #669af5

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 →

#f5c166

#66e2f5 · #7966f5

#f5669a · #9af566

Split-complementary

Open in tool →

#f57966 · #e2f566

#f566e2 · #f5c166 · #66f579

Contrast

#669af5 as textRatioAAAA largeAAAFix
Aaon white
2.8:1failfailfail
  • AA: use #226ef1 as the text (4.6:1)
  • AAA: use #0d50c5 as the text (7.07:1)
  • AA: or shift the background to #333333 (4.52:1)
  • AAA: or shift the background to #0a0a0a (7.08:1)
Aaon black
7.51:1passpasspassPasses 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 #669af5 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

#669af5 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #669af5
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 #669af5 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/669af5-9ca6c4-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