Color

#040f25

#040f25
hex#040f25
rgbrgb(4, 15, 37)
hslhsl(220, 80%, 8%)
oklchoklch(0.173 0.049 260.6)
Closest name: Mysterious Depths (#060929)Relative luminance 0.005

Tints & shades

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

Harmonies

Complementary

Open in tool →

#251a04

#041f25 · #0a0425

#25040f · #0f2504

Split-complementary

Open in tool →

#250a04 · #1f2504

#25041f · #251a04 · #04250a

Contrast

#040f25 as textRatioAAAA largeAAAFix
Aaon white
19.09:1passpasspassPasses AAA — no fix needed.
Aaon black
1.1:1failfailfail
  • AA: use #306ee8 as the text (4.52:1)
  • AAA: use #6894ee as the text (7.06:1)
  • AA: or shift the background to #7d7d7d (4.64:1)
  • AAA: or shift the background to #9e9e9e (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 #040f25 as the background.

Brands using this color

Fonts for this mood

#040f25 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040f25
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 #040f25 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040f25-9ca5c4-df694e-211f2d-e9f0f1?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