Color

#040c2a

#040c2a
hex#040c2a
rgbrgb(4, 12, 42)
hslhsl(227, 83%, 9%)
oklchoklch(0.169 0.063 266.2)
Closest name: Mysterious Depths (#060929)Relative luminance 0.0046

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2a2204

#041f2a · #0f042a

#2a040c · #0c2a04

Split-complementary

Open in tool →

#2a0f04 · #1f2a04

#2a041f · #2a2204 · #042a0f

Contrast

#040c2a as textRatioAAAA largeAAAFix
Aaon white
19.25:1passpasspassPasses AAA — no fix needed.
Aaon black
1.09:1failfailfail
  • AA: use #4469ee as the text (4.5:1)
  • AAA: use #7892f2 as the text (7.19:1)
  • AA: or shift the background to #7d7d7d (4.68:1)
  • AAA: or shift the background to #9c9c9c (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040c2a as the background.

Brands using this color

Fonts for this mood

#040c2a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040c2a
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 #040c2a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040c2a-9ca0c4-df7a4e-221f2d-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