Color

#04091f

#04091f
hex#04091f
rgbrgb(4, 9, 31)
hslhsl(229, 77%, 7%)
oklchoklch(0.15 0.048 267.7)
Closest name: Mysterious Depths (#060929)Relative luminance 0.0032

Tints & shades

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

Harmonies

Complementary

Open in tool →

#201b04

#041720 · #0d0420

#200409 · #092004

Split-complementary

Open in tool →

#200d04 · #172004

#200417 · #201b04 · #04200d

Contrast

#04091f as textRatioAAAA largeAAAFix
Aaon white
19.74:1passpasspassPasses AAA — no fix needed.
Aaon black
1.06:1failfailfail
  • AA: use #4f6be8 as the text (4.6:1)
  • AAA: use #7c91ee as the text (7.14:1)
  • AA: or shift the background to #7a7a7a (4.6:1)
  • AAA: or shift the background to #9c9c9c (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #04091f as the background.

Brands using this color

Fonts for this mood

#04091f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #04091f
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 #04091f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/04091f-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