Color

#669de1

#669de1
hex#669de1
rgbrgb(102, 157, 225)
hslhsl(213, 67%, 64%)
oklchoklch(0.686 0.117 254.4)
Closest name: Blue Bay (#619ad6)Relative luminance 0.3237

Colors that go with #669de1

Charcoal, Medium Sea Green and Peru 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 →

#e1a966

#66dbe1 · #6c66e1

#e1669d · #9de166

Split-complementary

Open in tool →

#e16c66 · #dbe166

#e166db · #e1a966 · #66e16c

Contrast

#669de1 as textRatioAAAA largeAAAFix
Aaon white
2.81:1failfailfail
  • AA: use #2975d1 as the text (4.61:1)
  • AAA: use #1f589e as the text (7.12:1)
  • AA: or shift the background to #303030 (4.7:1)
  • AAA: or shift the background to #0a0a0a (7.05:1)
Aaon black
7.47:1passpasspassPasses 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 #669de1 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

#669de1 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #669de1
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 #669de1 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/669de1-9ca9c4-df584e-1f202d-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