Color

#421d01

#421d01
hex#421d01
rgbrgb(66, 29, 1)
hslhsl(26, 97%, 13%)
oklchoklch(0.279 0.069 53.2)
Closest name: Délicieux au Chocolat (#412010)Relative luminance 0.0204

Colors that go with #421d01

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 →

#012541

#410105 · #413d01

#01411d · #1d0141

Split-complementary

Open in tool →

#01413d · #010541

#054101 · #012541 · #3d0141

Contrast

#421d01 as textRatioAAAA largeAAAFix
Aaon white
14.92:1passpasspassPasses AAA — no fix needed.
Aaon black
1.41:1failfailfail
  • AA: use #c45703 as the text (4.71:1)
  • AAA: use #f66d04 as the text (7.11:1)
  • AA: or shift the background to #8f8f8f (4.61:1)
  • AAA: or shift the background to #b3b3b3 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #421d01 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

#421d01 reads as warm, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #421d01
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 #421d01 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/421d01-c4b29c-62cbc5-2d2b1f-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