Color

#243765

#243765
hex#243765
rgbrgb(36, 55, 101)
hslhsl(222, 47%, 27%)
oklchoklch(0.346 0.084 265.4)
Closest name: Atlantic Navy (#13336f)Relative luminance 0.0405

Colors that go with #243765

Steel Blue, Dark Olive Green 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 →

#655224

#245865 · #312465

#652438 · #386524

Split-complementary

Open in tool →

#653124 · #586524

#652458 · #655224 · #246531

Contrast

#243765 as textRatioAAAA largeAAAFix
Aaon white
11.61:1passpasspassPasses AAA — no fix needed.
Aaon black
1.81:1failfailfail
  • AA: use #5374c1 as the text (4.64:1)
  • AAA: use #7c95d0 as the text (7.07:1)
  • AA: or shift the background to #a3a3a3 (4.6:1)
  • AAA: or shift the background to #c9c9c9 (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #243765 as the background.

Brands using this color

Fonts for this mood

#243765 reads as cool, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #243765
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 #243765 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/243765-9ca3c4-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