Color

#383b4d

#383b4d
hex#383b4d
rgbrgb(56, 59, 77)
hslhsl(231, 16%, 26%)
oklchoklch(0.357 0.031 277.3)
Closest name: Call It a Night (#42364c)Relative luminance 0.045

Colors that go with #383b4d

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 →

#4d4a38

#38454d · #3f384d

#4d383b · #3b4d38

Split-complementary

Open in tool →

#4d3f38 · #454d38

#4d3845 · #4d4a38 · #384d3f

Contrast

#383b4d as textRatioAAAA largeAAAFix
Aaon white
11.05:1passpasspassPasses AAA — no fix needed.
Aaon black
1.9:1failfailfail
  • AA: use #6e7496 as the text (4.6:1)
  • AAA: use #9296b0 as the text (7.21:1)
  • AA: or shift the background to #a6a6a6 (4.54:1)
  • AAA: or shift the background to #cfcfcf (7.09:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #383b4d as the background.

Brands using this color

Fonts for this mood

#383b4d reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #383b4d
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 #383b4d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/383b4d-9c9ec4-df834e-231f2d-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