Color

#042e2f

#042e2f
hex#042e2f
rgbrgb(4, 46, 47)
hslhsl(181, 84%, 10%)
oklchoklch(0.275 0.044 197.3)
Closest name: Black Box (#0f282f)Relative luminance 0.0219

Colors that go with #042e2f

Charcoal, Crimson and Sea Green lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Real palettes that use #042e2f

Tints & shades

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

Harmonies

Complementary

Open in tool →

#2f0504

#042f1a · #04192f

#2f042e · #2e2f04

Split-complementary

Open in tool →

#2f0419 · #2f1a04

#1a042f · #2f0504 · #192f04

Contrast

#042e2f as textRatioAAAA largeAAAFix
Aaon white
14.61:1passpasspassPasses AAA — no fix needed.
Aaon black
1.44:1failfailfail
  • AA: use #0c8688 as the text (4.78:1)
  • AAA: use #0fa6a9 as the text (7.05:1)
  • AA: or shift the background to #8f8f8f (4.52:1)
  • AAA: or shift the background to #b5b5b5 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #042e2f 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

#042e2f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #042e2f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #042e2f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/042e2f-a2babe-d45992-1f272d-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