Color

#191d2a

#191d2a
hex#191d2a
rgbrgb(25, 29, 42)
hslhsl(226, 25%, 13%)
oklchoklch(0.233 0.026 271.1)
Closest name: Night Demons (#201b20)Relative luminance 0.0125

Colors that go with #191d2a

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 →

#292619

#192529 · #1d1929

#29191d · #1d2919

Split-complementary

Open in tool →

#291d19 · #252919

#291925 · #292619 · #19291d

Contrast

#191d2a as textRatioAAAA largeAAAFix
Aaon white
16.79:1passpasspassPasses AAA — no fix needed.
Aaon black
1.25:1failfailfail
  • AA: use #6674a3 as the text (4.59:1)
  • AAA: use #8c97ba as the text (7.25:1)
  • AA: or shift the background to #858585 (4.55:1)
  • AAA: or shift the background to #a8a8a8 (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #191d2a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#191d2a reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #191d2a
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 #191d2a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/191d2a-9ca1c4-df774e-221f2d-e9eff1?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