Color

#660f53

#660f53
hex#660f53
rgbrgb(102, 15, 83)
hslhsl(313, 74%, 23%)
oklchoklch(0.355 0.139 339)
Closest name: Cosmic Explorer (#551155)Relative luminance 0.0379

Tints & shades

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

Harmonies

Complementary

Open in tool →

#0f6622

#4d0f66 · #660f28

#53660f · #0f5366

Split-complementary

Open in tool →

#28660f · #0f664d

#664d0f · #0f6622 · #0f2866

Contrast

#660f53 as textRatioAAAA largeAAAFix
Aaon white
11.94:1passpasspassPasses AAA — no fix needed.
Aaon black
1.76:1failfailfail
  • AA: use #d520ae as the text (4.65:1)
  • AAA: use #e864cb as the text (7.12:1)
  • AA: or shift the background to #a1a1a1 (4.62:1)
  • 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 #660f53 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

#660f53 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #660f53
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 #660f53 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/660f53-c19fb5-7ecb62-2d1f24-efe9f1?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