Color

#383b52

#383b52
hex#383b52
rgbrgb(56, 59, 82)
hslhsl(233, 19%, 27%)
oklchoklch(0.36 0.04 278.4)
Closest name: Call It a Night (#42364c)Relative luminance 0.0458

Colors that go with #383b52

Dark Olive Green, 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 →

#524f38

#384852 · #423852

#52383b · #3b5238

Split-complementary

Open in tool →

#524238 · #485238

#523848 · #524f38 · #385242

Contrast

#383b52 as textRatioAAAA largeAAAFix
Aaon white
10.96:1passpasspassPasses AAA — no fix needed.
Aaon black
1.92:1failfailfail
  • AA: use #6d739c as the text (4.58:1)
  • AAA: use #9296b5 as the text (7.25:1)
  • AA: or shift the background to #a6a6a6 (4.5:1)
  • AAA: or shift the background to #cfcfcf (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #383b52 as the background.

Brands using this color

Fonts for this mood

#383b52 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #383b52
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 #383b52 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/383b52-9c9cc4-df884e-241f2d-e9eef1?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