Color

#0f181f

#0f181f
hex#0f181f
rgbrgb(15, 24, 31)
hslhsl(206, 35%, 9%)
oklchoklch(0.204 0.019 242.2)
Closest name: Black Stallion (#0e191c)Relative luminance 0.0085

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#1f160f

#0f1f1e · #0f101f

#1f0f18 · #181f0f

Split-complementary

Open in tool →

#1f0f10 · #1f1e0f

#1e0f1f · #1f160f · #101f0f

Contrast

#0f181f as textRatioAAAA largeAAAFix
Aaon white
17.94:1passpasspassPasses AAA — no fix needed.
Aaon black
1.17:1failfailfail
  • AA: use #4c7b9e as the text (4.63:1)
  • AAA: use #729bbb as the text (7.12:1)
  • AA: or shift the background to #808080 (4.54:1)
  • AAA: or shift the background to #a3a3a3 (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f181f as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0f181f reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f181f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #0f181f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f181f-9caec4-df4e56-1f212d-e9f1f1?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