Color

#665cb2

#665cb2
hex#665cb2
rgbrgb(102, 92, 178)
hslhsl(247, 36%, 53%)
oklchoklch(0.526 0.132 286.3)
Closest name: Bellflower (#5d66aa)Relative luminance 0.1369

Tints & shades

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

Harmonies

Complementary

Open in tool →

#a8b25c

#5c7db2 · #915cb2

#b2665c · #5cb266

Split-complementary

Open in tool →

#b2915c · #7db25c

#b25c7d · #a8b25c · #5cb291

Contrast

#665cb2 as textRatioAAAA largeAAAFix
Aaon white
5.62:1passpassfail
  • AAA: use #574da3 as the text (7.01:1)
Aaon black
3.74:1failpassfail
  • AA: use #766dba as the text (4.67:1)
  • AAA: use #9790cb as the text (7.17:1)
  • AA: or shift the background to #e6e6e6 (4.5:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #665cb2 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

#665cb2 reads as cool, modern. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #665cb2
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 #665cb2 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/665cb2-a59cc4-dfaa4e-271f2d-e9ecf1?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