Color

#000a1f

#000a1f
hex#000a1f
rgbrgb(0, 10, 31)
hslhsl(221, 100%, 6%)
oklchoklch(0.148 0.05 255.7)
Closest name: Mysterious Depths (#060929)Relative luminance 0.0032

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1f1500

#00191f · #06001f

#1f000a · #0a1f00

Split-complementary

Open in tool →

#1f0600 · #191f00

#1f0019 · #1f1500 · #001f06

Contrast

#000a1f as textRatioAAAA largeAAAFix
Aaon white
19.75:1passpasspassPasses AAA — no fix needed.
Aaon black
1.06:1failfailfail
  • AA: use #2469ff as the text (4.54:1)
  • AAA: use #6193ff as the text (7.13:1)
  • AA: or shift the background to #7a7a7a (4.6:1)
  • AAA: or shift the background to #9c9c9c (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #000a1f as the background.

Brands using this color

Fonts for this mood

#000a1f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #000a1f
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 #000a1f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/000a1f-9ca4c4-df6b4e-211f2d-e9eff1?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