brandsweets

Color

#667bb2

#667bb2
hex#667bb2
rgbrgb(102, 123, 178)
hslhsl(223, 33%, 55%)
oklchoklch(0.589 0.088 267.7)
Closest name: Flood (#6677bb)Relative luminance 0.2021
CoolMuted
Open in palette toolCheck contrast

Tints & shades

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

Harmonies

Complementary

Open in tool →
667bb2b29d66

#b29d66

Analogous

Open in tool →
667bb266a2b27766b2

#66a2b2 · #7766b2

Triadic

Open in tool →
667bb2b2667c7cb266

#b2667c · #7cb266

Split-complementary

Open in tool →
667bb2b27766a2b266

#b27766 · #a2b266

Tetradic

Open in tool →
667bb2b266a2b29d6666b277

#b266a2 · #b29d66 · #66b277

Contrast

#667bb2 as textRatioAAAA largeAAAFix
Aaon white
4.17:1failpassfail
  • AA: use #5c73ad as the text (4.66:1)
  • AAA: use #445788 as the text (7.08:1)
  • AA: or shift the background to #0f0f0f (4.6:1)
Aaon black
5.04:1passpassfail
  • AAA: use #8596c1 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 #667bb2 as the background.

Brands using this color

mcpConnect your agent — build around #667bb2
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 #667bb2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/667bb2-9ca3c4-df704e-211f2d-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