Color

#123121

#123121
hex#123121
rgbrgb(18, 49, 33)
hslhsl(149, 46%, 13%)
oklchoklch(0.284 0.048 158.7)
Closest name: Pitch-Black Forests (#003322)Relative luminance 0.0244

Colors that go with #123121

Charcoal, Crimson and Sienna 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 →

#301222

#123012 · #123030

#211230 · #302112

Split-complementary

Open in tool →

#301230 · #301212

#121230 · #301222 · #303012

Contrast

#123121 as textRatioAAAA largeAAAFix
Aaon white
14.12:1passpasspassPasses AAA — no fix needed.
Aaon black
1.49:1failfailfail
  • AA: use #32865a as the text (4.69:1)
  • AAA: use #3ea871 as the text (7.04:1)
  • AA: or shift the background to #949494 (4.66:1)
  • AAA: or shift the background to #b8b8b8 (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #123121 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#123121 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #123121
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 #123121 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/123121-a2beb3-d459d4-1f2d2c-e9f1e9?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