Color

#000b1e

#000b1e
hex#000b1e
rgbrgb(0, 11, 30)
hslhsl(218, 100%, 6%)
oklchoklch(0.15 0.047 253.3)
Closest name: Black Knight (#010b13)Relative luminance 0.0033

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1f1300

#001b1f · #04001f

#1f000b · #0b1f00

Split-complementary

Open in tool →

#1f0400 · #1b1f00

#1f001b · #1f1300 · #001f04

Contrast

#000b1e as textRatioAAAA largeAAAFix
Aaon white
19.69:1passpasspassPasses AAA — no fix needed.
Aaon black
1.07:1failfailfail
  • AA: use #146aff as the text (4.54:1)
  • AAA: use #5794ff as the text (7.09:1)
  • AA: or shift the background to #7a7a7a (4.59:1)
  • AAA: or shift the background to #9c9c9c (7.17:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #000b1e as the background.

Brands using this color

Fonts for this mood

#000b1e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #000b1e
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 #000b1e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/000b1e-9ca6c4-df644e-201f2d-e9f0f1?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