Color

#042a2a

#042a2a
hex#042a2a
rgbrgb(4, 42, 42)
hslhsl(180, 83%, 9%)
oklchoklch(0.26 0.041 194.9)
Closest name: Black Box (#0f282f)Relative luminance 0.0185

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2a0404

#042a17 · #04172a

#2a042a · #2a2a04

Split-complementary

Open in tool →

#2a0417 · #2a1704

#17042a · #2a0404 · #172a04

Contrast

#042a2a as textRatioAAAA largeAAAFix
Aaon white
15.33:1passpasspassPasses AAA — no fix needed.
Aaon black
1.37:1failfailfail
  • AA: use #0c8383 as the text (4.59:1)
  • AAA: use #10a8a8 as the text (7.19:1)
  • AA: or shift the background to #8c8c8c (4.56:1)
  • AAA: or shift the background to #b0b0b0 (7.07:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #042a2a as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#042a2a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #042a2a
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 #042a2a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/042a2a-a2bbbe-d45994-1f272d-e9f1ed?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