Color

#640665

#640665
hex#640665
rgbrgb(100, 6, 101)
hslhsl(299, 89%, 21%)
oklchoklch(0.357 0.159 327.8)
Closest name: Cosmic Explorer (#551155)Relative luminance 0.0378

Tints & shades

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

Harmonies

Complementary

Open in tool →

#076506

#340665 · #650637

#656406 · #066564

Split-complementary

Open in tool →

#376506 · #066534

#653406 · #076506 · #063765

Contrast

#640665 as textRatioAAAA largeAAAFix
Aaon white
11.96:1passpasspassPasses AAA — no fix needed.
Aaon black
1.76:1failfailfail
  • AA: use #cc0ccf as the text (4.52:1)
  • AAA: use #f24df5 as the text (7.16:1)
  • AA: or shift the background to #a1a1a1 (4.63:1)
  • AAA: or shift the background to #c7c7c7 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #640665 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

#640665 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #640665
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 #640665 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/640665-c19fbd-96cb62-2d1f27-ede9f1?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