Color

#05404d

#05404d
hex#05404d
rgbrgb(5, 64, 77)
hslhsl(191, 88%, 16%)
oklchoklch(0.344 0.059 217.6)
Closest name: Cold and Dark (#154250)Relative luminance 0.0423

Colors that go with #05404d

Crimson, Steel Blue and Teal 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 →

#4d1205

#054d36 · #051c4d

#4d0540 · #404d05

Split-complementary

Open in tool →

#4d051c · #4d3605

#36054d · #4d1205 · #1c4d05

Contrast

#05404d as textRatioAAAA largeAAAFix
Aaon white
11.37:1passpasspassPasses AAA — no fix needed.
Aaon black
1.85:1failfailfail
  • AA: use #0a7f99 as the text (4.51:1)
  • AAA: use #0da3c5 as the text (7.06:1)
  • AA: or shift the background to #a3a3a3 (4.51:1)
  • AAA: or shift the background to #cccccc (7.08:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #05404d as the background.

Brands using this color

Fonts for this mood

#05404d reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #05404d
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 #05404d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/05404d-a2b6be-df4e7a-1f252d-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