Color

#043f48

#043f48
hex#043f48
rgbrgb(4, 63, 72)
hslhsl(188, 89%, 15%)
oklchoklch(0.338 0.057 211.1)
Closest name: Rich Black (#004040)Relative luminance 0.0405

Colors that go with #043f48

Steel Blue, Teal and Rust 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.

Tints & shades

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

Harmonies

Complementary

Open in tool →

#480d04

#04482f · #041d48

#48043f · #3f4804

Split-complementary

Open in tool →

#48041d · #482f04

#2f0448 · #480d04 · #1d4804

Contrast

#043f48 as textRatioAAAA largeAAAFix
Aaon white
11.6:1passpasspassPasses AAA — no fix needed.
Aaon black
1.81:1failfailfail
  • AA: use #098395 as the text (4.69:1)
  • AAA: use #0ba4bc as the text (7.05:1)
  • AA: or shift the background to #a3a3a3 (4.6:1)
  • AAA: or shift the background to #c9c9c9 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #043f48 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

#043f48 reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #043f48
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 #043f48 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/043f48-a2b7be-df4e81-1f252d-e9f1ee?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