Color

#421a3e

#421a3e
hex#421a3e
rgbrgb(66, 26, 62)
hslhsl(306, 43%, 18%)
oklchoklch(0.292 0.081 331.4)
Closest name: Velvet Cosmos (#441144)Relative luminance 0.0224

Colors that go with #421a3e

Charcoal, Dark Olive Green and Sea Green 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 →

#1a421e

#321a42 · #421a2a

#3e421a · #1a3e42

Split-complementary

Open in tool →

#2a421a · #1a4232

#42321a · #1a421e · #1a2a42

Contrast

#421a3e as textRatioAAAA largeAAAFix
Aaon white
14.49:1passpasspassPasses AAA — no fix needed.
Aaon black
1.45:1failfailfail
  • AA: use #b649ab as the text (4.53:1)
  • AAA: use #cb7cc3 as the text (7.21:1)
  • AA: or shift the background to #919191 (4.6:1)
  • AAA: or shift the background to #b5b5b5 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #421a3e 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

#421a3e reads as warm, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #421a3e
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 #421a3e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/421a3e-c19fb9-8acb62-2d1f26-eee9f1?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