Color

#040a25

#040a25
hex#040a25
rgbrgb(4, 10, 37)
hslhsl(229, 80%, 8%)
oklchoklch(0.159 0.057 267.5)
Closest name: Mysterious Depths (#060929)Relative luminance 0.0038

Tints & shades

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

Harmonies

Complementary

Open in tool →

#251f04

#041a25 · #0e0425

#25040a · #0a2504

Split-complementary

Open in tool →

#250e04 · #1a2504

#25041a · #251f04 · #04250e

Contrast

#040a25 as textRatioAAAA largeAAAFix
Aaon white
19.53:1passpasspassPasses AAA — no fix needed.
Aaon black
1.08:1failfailfail
  • AA: use #4c69eb as the text (4.53:1)
  • AAA: use #7a90f0 as the text (7.08:1)
  • AA: or shift the background to #7a7a7a (4.55:1)
  • AAA: or shift the background to #9c9c9c (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #040a25 as the background.

Brands using this color

Fonts for this mood

#040a25 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #040a25
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 #040a25 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/040a25-9c9fc4-df7e4e-231f2d-e9eef1?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