Color

#03484f

#03484f
hex#03484f
rgbrgb(3, 72, 79)
hslhsl(186, 93%, 16%)
oklchoklch(0.367 0.062 206.1)
Closest name: Cold and Dark (#154250)Relative luminance 0.0522

Colors that go with #03484f

Crimson, Steel Blue and Blue 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 →

#4f0a03

#034f30 · #03214f

#4f0347 · #474f03

Split-complementary

Open in tool →

#4f0321 · #4f3003

#30034f · #4f0a03 · #214f03

Contrast

#03484f as textRatioAAAA largeAAAFix
Aaon white
10.28:1passpasspassPasses AAA — no fix needed.
Aaon black
2.04:1failfailfail
  • AA: use #05818f as the text (4.54:1)
  • AAA: use #07a5b6 as the text (7.07:1)
  • AA: or shift the background to #adadad (4.58:1)
  • AAA: or shift the background to #d6d6d6 (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 #03484f as the background.

Brands using this color

Fonts for this mood

#03484f reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #03484f
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 #03484f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/03484f-a2b8be-df4e86-1f262d-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