Color

#040f1a

#040f1a
hex#040f1a
rgbrgb(4, 15, 26)
hslhsl(210, 73%, 6%)
oklchoklch(0.164 0.029 247.1)
Closest name: Dark Rift (#060b14)Relative luminance 0.0044

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1a0f04

#041a1a · #04041a

#1a040f · #0f1a04

Split-complementary

Open in tool →

#1a0404 · #1a1a04

#1a041a · #1a0f04 · #041a04

Contrast

#040f1a as textRatioAAAA largeAAAFix
Aaon white
19.29:1passpasspassPasses AAA — no fix needed.
Aaon black
1.09:1failfailfail
  • AA: use #2078cf as the text (4.65:1)
  • AAA: use #539ce4 as the text (7.24:1)
  • AA: or shift the background to #7d7d7d (4.69:1)
  • AAA: or shift the background to #9c9c9c (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040f1a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#040f1a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040f1a
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 #040f1a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040f1a-9cabc4-df514e-1f202d-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