Color

#660500

#660500
hex#660500
rgbrgb(102, 5, 0)
hslhsl(3, 100%, 20%)
oklchoklch(0.324 0.128 30.4)
Closest name: Blood of Zeus (#640f09)Relative luminance 0.0293

Tints & shades

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

Harmonies

Complementary

Open in tool →

#006166

#66002e · #663800

#006605 · #050066

Split-complementary

Open in tool →

#006638 · #002e66

#2e6600 · #006166 · #380066

Contrast

#660500 as textRatioAAAA largeAAAFix
Aaon white
13.24:1passpasspassPasses AAA — no fix needed.
Aaon black
1.59:1failfailfail
  • AA: use #eb0c00 as the text (4.59:1)
  • AAA: use #ff5f57 as the text (7.03:1)
  • AA: or shift the background to #999999 (4.65:1)
  • AAA: or shift the background to #bdbdbd (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #660500 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

#660500 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #660500
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 #660500 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/660500-c4a39c-62cb9d-2d261f-f1e9ed?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