Color

#0b1817

#0b1817
hex#0b1817
rgbrgb(11, 24, 23)
hslhsl(175, 37%, 7%)
oklchoklch(0.197 0.018 189.6)
Closest name: Black Stallion (#0e191c)Relative luminance 0.0079

Tints & shades

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

Harmonies

Complementary

Open in tool →

#180b0c

#0b1811 · #0b1318

#170b18 · #18170b

Split-complementary

Open in tool →

#180b13 · #18110b

#110b18 · #180b0c · #13180b

Contrast

#0b1817 as textRatioAAAA largeAAAFix
Aaon white
18.15:1passpasspassPasses AAA — no fix needed.
Aaon black
1.16:1failfailfail
  • AA: use #3b817b as the text (4.61:1)
  • AAA: use #4ca49d as the text (7.1:1)
  • AA: or shift the background to #808080 (4.59:1)
  • AAA: or shift the background to #a1a1a1 (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0b1817 as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#0b1817 reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0b1817
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 #0b1817 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0b1817-a2bdbe-d4599f-1f282d-e9f1ed?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