Color

#05356b

#05356b
hex#05356b
rgbrgb(5, 53, 107)
hslhsl(212, 91%, 22%)
oklchoklch(0.334 0.106 255.6)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.0364

Colors that go with #05356b

Crimson, Teal 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 →

#6b3c05

#05686b · #08056b

#6b0535 · #356b05

Split-complementary

Open in tool →

#6b0805 · #686b05

#6b0568 · #6b3c05 · #056b08

Contrast

#05356b as textRatioAAAA largeAAAFix
Aaon white
12.15:1passpasspassPasses AAA — no fix needed.
Aaon black
1.73:1failfailfail
  • AA: use #0b71e5 as the text (4.51:1)
  • AAA: use #4698f6 as the text (7.08:1)
  • AA: or shift the background to #9e9e9e (4.54:1)
  • AAA: or shift the background to #c7c7c7 (7.19:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #05356b as the background.

Brands using this color

Fonts for this mood

#05356b reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #05356b
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 #05356b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/05356b-9caac4-df564e-1f202d-e9f1f1?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