Color

#040d25

#040d25
hex#040d25
rgbrgb(4, 13, 37)
hslhsl(224, 80%, 8%)
oklchoklch(0.167 0.052 263.7)
Closest name: Mysterious Depths (#060929)Relative luminance 0.0045

Tints & shades

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

Harmonies

Complementary

Open in tool →

#251c04

#041d25 · #0c0425

#25040d · #0d2504

Split-complementary

Open in tool →

#250c04 · #1d2504

#25041d · #251c04 · #04250c

Contrast

#040d25 as textRatioAAAA largeAAAFix
Aaon white
19.28:1passpasspassPasses AAA — no fix needed.
Aaon black
1.09:1failfailfail
  • AA: use #3e6cea as the text (4.54:1)
  • AAA: use #7192ef as the text (7.06:1)
  • AA: or shift the background to #7d7d7d (4.68:1)
  • AAA: or shift the background to #9c9c9c (7.02:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040d25 as the background.

Brands using this color

Fonts for this mood

#040d25 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040d25
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 #040d25 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040d25-9ca2c4-df724e-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