Color

#18101e

#18101e
hex#18101e
rgbrgb(24, 16, 30)
hslhsl(274, 30%, 9%)
oklchoklch(0.191 0.03 309.9)
Closest name: Shot in the Dark (#1d0d1d)Relative luminance 0.0066

Colors that go with #18101e

Charcoal, Dark Olive Green 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 →

#161e10

#11101e · #1e101d

#1e1810 · #101e18

Split-complementary

Open in tool →

#1d1e10 · #101e11

#1e1110 · #161e10 · #101d1e

Contrast

#18101e as textRatioAAAA largeAAAFix
Aaon white
18.56:1passpasspassPasses AAA — no fix needed.
Aaon black
1.13:1failfailfail
  • AA: use #8e67ad as the text (4.69:1)
  • AAA: use #a98bc1 as the text (7.15:1)
  • AA: or shift the background to #7d7d7d (4.51:1)
  • AAA: or shift the background to #a1a1a1 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #18101e as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#18101e reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #18101e
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 #18101e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/18101e-b79cc4-c2cb62-2d1f2d-eae9f1?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