Color

#181e20

#181e20
hex#181e20
rgbrgb(24, 30, 32)
hslhsl(195, 14%, 11%)
oklchoklch(0.23 0.01 219.9)
Closest name: Coco’s Black (#1c1c1a)Relative luminance 0.0123

Colors that go with #181e20

Charcoal, Amber and 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 →

#201a18

#18201e · #181a20

#20181e · #1e2018

Split-complementary

Open in tool →

#20181a · #201e18

#1e1820 · #201a18 · #1a2018

Contrast

#181e20 as textRatioAAAA largeAAAFix
Aaon white
16.86:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #637b83 as the text (4.69:1)
  • AAA: use #8299a1 as the text (7.02:1)
  • AA: or shift the background to #858585 (4.57:1)
  • AAA: or shift the background to #a8a8a8 (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #181e20 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#181e20 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #181e20
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 #181e20 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/181e20-9cb5c4-df4e70-1f242d-e9f1ef?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