Color

#536388

#536388
hex#536388
rgbrgb(83, 99, 136)
hslhsl(222, 24%, 43%)
oklchoklch(0.502 0.063 266.2)
Closest name: Admiral Blue (#50647f)Relative luminance 0.1254

Colors that go with #536388

Charcoal, Sea Green and Dark Olive Green 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 →

#887853

#537d88 · #5e5388

#885363 · #638853

Split-complementary

Open in tool →

#885e53 · #7d8853

#88537d · #887853 · #53885e

Contrast

#536388 as textRatioAAAA largeAAAFix
Aaon white
5.99:1passpassfail
  • AAA: use #4a5878 as the text (7.1:1)
Aaon black
3.51:1failpassfail
  • AA: use #6476a0 as the text (4.64:1)
  • AAA: use #8a98b7 as the text (7.26:1)
  • AA: or shift the background to #e0e0e0 (4.53:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #536388 as the background.

Brands using this color

mcpConnect your agent — build around #536388
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 #536388 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/536388-9ca3c4-df6e4e-211f2d-e9eff1?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