Color

#393b65

#393b65
hex#393b65
rgbrgb(57, 59, 101)
hslhsl(237, 28%, 31%)
oklchoklch(0.371 0.072 280.2)
Closest name: Black Turmeric (#2c4364)Relative luminance 0.0494

Colors that go with #393b65

Steel Blue, 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 →

#656339

#395165 · #4d3965

#65393b · #3b6539

Split-complementary

Open in tool →

#654d39 · #516539

#653951 · #656339 · #39654d

Contrast

#393b65 as textRatioAAAA largeAAAFix
Aaon white
10.57:1passpasspassPasses AAA — no fix needed.
Aaon black
1.99:1failfailfail
  • AA: use #6c6fac as the text (4.51:1)
  • AAA: use #9092c1 as the text (7.07:1)
  • AA: or shift the background to #ababab (4.6:1)
  • AAA: or shift the background to #d4d4d4 (7.13:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #393b65 as the background.

Brands using this color

mcpConnect your agent — build around #393b65
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 #393b65 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/393b65-9f9cc4-df924e-251f2d-e9edf1?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