Color

#421a01

#421a01
hex#421a01
rgbrgb(66, 26, 1)
hslhsl(23, 97%, 13%)
oklchoklch(0.273 0.072 49.1)
Closest name: Délicieux au Chocolat (#412010)Relative luminance 0.019

Colors that go with #421a01

Blue Violet, Charcoal and Crimson 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 →

#012941

#410108 · #413a01

#01411a · #1a0141

Split-complementary

Open in tool →

#01413a · #010841

#084101 · #012941 · #3a0141

Contrast

#421a01 as textRatioAAAA largeAAAFix
Aaon white
15.22:1passpasspassPasses AAA — no fix needed.
Aaon black
1.38:1failfailfail
  • AA: use #c94f03 as the text (4.6:1)
  • AAA: use #fb6609 as the text (7.01:1)
  • AA: or shift the background to #8c8c8c (4.53:1)
  • AAA: or shift the background to #b0b0b0 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #421a01 as the background.

Brands using this color

Fonts for this mood

#421a01 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #421a01
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 #421a01 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/421a01-c4b09c-62cbc0-2d2b1f-f1e9ea?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