Color

#04151b

#04151b
hex#04151b
rgbrgb(4, 21, 27)
hslhsl(196, 74%, 6%)
oklchoklch(0.184 0.027 222.5)
Closest name: Midnight Edition (#0c121b)Relative luminance 0.0064

Tints & shades

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

Harmonies

Complementary

Open in tool →

#1b0a04

#041b15 · #04091b

#1b0415 · #151b04

Split-complementary

Open in tool →

#1b0409 · #1b1504

#15041b · #1b0a04 · #091b04

Contrast

#04151b as textRatioAAAA largeAAAFix
Aaon white
18.61:1passpasspassPasses AAA — no fix needed.
Aaon black
1.13:1failfailfail
  • AA: use #197fa4 as the text (4.61:1)
  • AAA: use #1fa1d1 as the text (7.08:1)
  • AA: or shift the background to #7d7d7d (4.52:1)
  • AAA: or shift the background to #a1a1a1 (7.2:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #04151b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#04151b reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #04151b
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 #04151b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/04151b-9cb5c4-df4e6e-1f232d-e9f1ef?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