brandsweets

Color

#666dcc

#666dcc
hex#666dcc
rgbrgb(102, 109, 204)
hslhsl(236, 50%, 60%)
oklchoklch(0.575 0.144 277.7)
Closest name: Flood (#6677bb)Relative luminance 0.1812
CoolModern
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
666dccccc566

#ccc566

Analogous

Open in tool →
666dcc66a0cc9266cc

#66a0cc · #9266cc

Triadic

Open in tool →
666dcccc666d6dcc66

#cc666d · #6dcc66

Split-complementary

Open in tool →
666dcccc9266a0cc66

#cc9266 · #a0cc66

Tetradic

Open in tool →
666dcccc66a0ccc56666cc92

#cc66a0 · #ccc566 · #66cc92

Contrast

#666dcc as textRatioAAAA largeAAAFix
Aaon white
4.54:1passpassfail
  • AAA: use #4048bf as the text (7.25:1)
Aaon black
4.62:1passpassfail
  • AAA: use #8c91d9 as the text (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #666dcc as the background.

Brands using this color

Fonts for this mood

#666dcc reads as cool, modern. The font library is tagged with the same vocabulary:

Modern fonts →
mcpConnect your agent — build around #666dcc
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 #666dcc and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/666dcc-9e9cc4-df8f4e-241f2d-e9eef1?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