Color

#063e4b

#063e4b
hex#063e4b
rgbrgb(6, 62, 75)
hslhsl(191, 85%, 16%)
oklchoklch(0.337 0.058 218.4)
Closest name: Sunken Harbour (#1c3d44)Relative luminance 0.0399

Colors that go with #063e4b

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 →

#4b1306

#064b36 · #061c4b

#4b063f · #3f4b06

Split-complementary

Open in tool →

#4b061c · #4b3606

#36064b · #4b1306 · #1c4b06

Contrast

#063e4b as textRatioAAAA largeAAAFix
Aaon white
11.68:1passpasspassPasses AAA — no fix needed.
Aaon black
1.8:1failfailfail
  • AA: use #0d819c as the text (4.64:1)
  • AAA: use #10a5c6 as the text (7.22:1)
  • AA: or shift the background to #a1a1a1 (4.52:1)
  • AAA: or shift the background to #c9c9c9 (7.05:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #063e4b as the background.

Brands using this color

Fonts for this mood

#063e4b reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #063e4b
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 #063e4b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/063e4b-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