Color

#421600

#421600
hex#421600
rgbrgb(66, 22, 0)
hslhsl(20, 100%, 13%)
oklchoklch(0.266 0.076 45.1)
Closest name: Black Chocolate (#441100)Relative luminance 0.0173

Colors that go with #421600

Charcoal, Crimson and Royal Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#002c42

#42000b · #423700

#004216 · #160042

Split-complementary

Open in tool →

#004237 · #000b42

#0b4200 · #002c42 · #370042

Contrast

#421600 as textRatioAAAA largeAAAFix
Aaon white
15.6:1passpasspassPasses AAA — no fix needed.
Aaon black
1.35:1failfailfail
  • AA: use #d14600 as the text (4.59:1)
  • AAA: use #ff6314 as the text (7.05:1)
  • AA: or shift the background to #8a8a8a (4.52:1)
  • AAA: or shift the background to #b0b0b0 (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #421600 as the background.

Brands using this color

Fonts for this mood

#421600 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #421600
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

›analyze #421600 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/421600-c4ae9c-62cbbb-2d2a1f-f1e9eb?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