Color

#043f4e

#043f4e
hex#043f4e
rgbrgb(4, 63, 78)
hslhsl(192, 90%, 16%)
oklchoklch(0.341 0.06 220.8)
Closest name: Cold and Dark (#154250)Relative luminance 0.0413

Tints & shades

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

Harmonies

Complementary

Open in tool →

#4e1304

#044e37 · #041a4e

#4e043f · #3f4e04

Split-complementary

Open in tool →

#4e041a · #4e3704

#37044e · #4e1304 · #1a4e04

Contrast

#043f4e as textRatioAAAA largeAAAFix
Aaon white
11.5:1passpasspassPasses AAA — no fix needed.
Aaon black
1.83:1failfailfail
  • AA: use #0882a0 as the text (4.71:1)
  • AAA: use #0ba5cb as the text (7.26:1)
  • AA: or shift the background to #a3a3a3 (4.56:1)
  • AAA: or shift the background to #cccccc (7.16:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #043f4e 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

#043f4e reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #043f4e
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 #043f4e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/043f4e-a2b5be-df4e77-1f242d-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