Color

#04191a

#04191a
hex#04191a
rgbrgb(4, 25, 26)
hslhsl(183, 73%, 6%)
oklchoklch(0.197 0.028 199.3)
Closest name: Black Stallion (#0e191c)Relative luminance 0.008

Colors that go with #04191a

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 →

#1a0504

#041a10 · #040e1a

#1a0419 · #191a04

Split-complementary

Open in tool →

#1a040e · #1a1004

#10041a · #1a0504 · #0e1a04

Contrast

#04191a as textRatioAAAA largeAAAFix
Aaon white
18.12:1passpasspassPasses AAA — no fix needed.
Aaon black
1.16:1failfailfail
  • AA: use #158389 as the text (4.64:1)
  • AAA: use #1ba5ac as the text (7.02:1)
  • AA: or shift the background to #808080 (4.59:1)
  • AAA: or shift the background to #a1a1a1 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #04191a as the background.

Brands using this color

Fonts for this mood

#04191a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #04191a
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 #04191a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/04191a-a2b9be-d4598e-1f262d-e9f1ee?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