Color

#040b20

#040b20
hex#040b20
rgbrgb(4, 11, 32)
hslhsl(225, 78%, 7%)
oklchoklch(0.156 0.046 264.8)
Closest name: Mysterious Depths (#060929)Relative luminance 0.0037

Tints & shades

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

Harmonies

Complementary

Open in tool →

#201904

#041920 · #0b0420

#20040b · #0b2004

Split-complementary

Open in tool →

#200b04 · #192004

#200419 · #201904 · #04200b

Contrast

#040b20 as textRatioAAAA largeAAAFix
Aaon white
19.56:1passpasspassPasses AAA — no fix needed.
Aaon black
1.07:1failfailfail
  • AA: use #456ee8 as the text (4.65:1)
  • AAA: use #7291ee as the text (7:1)
  • AA: or shift the background to #7a7a7a (4.56:1)
  • AAA: or shift the background to #9c9c9c (7.12:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040b20 as the background.

Brands using this color

Fonts for this mood

#040b20 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040b20
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 #040b20 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040b20-9ca1c4-df754e-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