Color

#1d191f

#1d191f
hex#1d191f
rgbrgb(29, 25, 31)
hslhsl(280, 11%, 11%)
oklchoklch(0.221 0.013 314.5)
Closest name: Night Demons (#201b20)Relative luminance 0.0106

Colors that go with #1d191f

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 →

#1b1f19

#1a191f · #1f191e

#1f1d19 · #191f1d

Split-complementary

Open in tool →

#1e1f19 · #191f1a

#1f1a19 · #1b1f19 · #191e1f

Contrast

#1d191f as textRatioAAAA largeAAAFix
Aaon white
17.34:1passpasspassPasses AAA — no fix needed.
Aaon black
1.21:1failfailfail
  • AA: use #826f8b as the text (4.6:1)
  • AAA: use #9f91a6 as the text (7.07:1)
  • AA: or shift the background to #828282 (4.51:1)
  • AAA: or shift the background to #a6a6a6 (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 #1d191f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#1d191f reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1d191f
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 #1d191f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1d191f-b99fc1-b8cb62-2d1f2c-ebe9f1?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