Color

#6683ea

#6683ea
hex#6683ea
rgbrgb(102, 131, 234)
hslhsl(227, 76%, 66%)
oklchoklch(0.637 0.158 269.7)
Closest name: Pan Purple (#657aef)Relative luminance 0.25

Colors that go with #6683ea

Charcoal, Medium Sea Green and Orange Red 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 →

#eace66

#66c5ea · #8c66ea

#ea6683 · #83ea66

Split-complementary

Open in tool →

#ea8c66 · #c5ea66

#ea66c5 · #eace66 · #66ea8c

Contrast

#6683ea as textRatioAAAA largeAAAFix
Aaon white
3.5:1failpassfail
  • AA: use #4b6de7 as the text (4.53:1)
  • AAA: use #1e47dc as the text (7.02:1)
  • AA: or shift the background to #212121 (4.6:1)
Aaon black
6:1passpassfail
  • AAA: use #7892ed as the text (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #6683ea as the background.

Brands using this color

Fonts for this mood

#6683ea reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #6683ea
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 #6683ea and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/6683ea-9ca0c4-df7a4e-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