Color

#66003d

#66003d
hex#66003d
rgbrgb(102, 0, 61)
hslhsl(324, 100%, 20%)
oklchoklch(0.335 0.138 352.7)
Closest name: Merguez (#650021)Relative luminance 0.0316

Tints & shades

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

Harmonies

Complementary

Open in tool →

#006629

#5c0066 · #66000a

#3d6600 · #003d66

Split-complementary

Open in tool →

#0a6600 · #00665c

#665c00 · #006629 · #000a66

Contrast

#66003d as textRatioAAAA largeAAAFix
Aaon white
12.86:1passpasspassPasses AAA — no fix needed.
Aaon black
1.63:1failfailfail
  • AA: use #e00087 as the text (4.52:1)
  • AAA: use #ff4db8 as the text (7.01:1)
  • AA: or shift the background to #999999 (4.52:1)
  • AAA: or shift the background to #c2c2c2 (7.22:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #66003d 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

#66003d reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #66003d
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 #66003d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/66003d-c19faf-6bcb62-2d1f22-f0e9f1?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