Color

#0b191e

#0b191e
hex#0b191e
rgbrgb(11, 25, 30)
hslhsl(196, 46%, 8%)
oklchoklch(0.203 0.022 222.9)
Closest name: Black Stallion (#0e191c)Relative luminance 0.0086

Colors that go with #0b191e

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 →

#1e100b

#0b1e19 · #0b0f1e

#1e0b19 · #191e0b

Split-complementary

Open in tool →

#1e0b0f · #1e190b

#190b1e · #1e100b · #0f1e0b

Contrast

#0b191e as textRatioAAAA largeAAAFix
Aaon white
17.92:1passpasspassPasses AAA — no fix needed.
Aaon black
1.17:1failfailfail
  • AA: use #387f99 as the text (4.66:1)
  • AAA: use #4c9fbd as the text (7:1)
  • AA: or shift the background to #808080 (4.54:1)
  • AAA: or shift the background to #a3a3a3 (7.1:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b191e as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0b191e reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b191e
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 #0b191e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b191e-9cb5c4-df4e6e-1f232d-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