Color

#381e39

#381e39
hex#381e39
rgbrgb(56, 30, 57)
hslhsl(298, 31%, 17%)
oklchoklch(0.282 0.06 325.7)
Closest name: Nightly Voyager (#391531)Relative luminance 0.0206

Colors that go with #381e39

Charcoal, Dark Olive Green and Sea 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 →

#1f391e

#2a1e39 · #391e2c

#39381e · #1e3938

Split-complementary

Open in tool →

#2c391e · #1e392a

#392a1e · #1f391e · #1e2c39

Contrast

#381e39 as textRatioAAAA largeAAAFix
Aaon white
14.86:1passpasspassPasses AAA — no fix needed.
Aaon black
1.41:1failfailfail
  • AA: use #a458a7 as the text (4.53:1)
  • AAA: use #bc83be as the text (7.13:1)
  • AA: or shift the background to #8f8f8f (4.6:1)
  • AAA: or shift the background to #b3b3b3 (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 #381e39 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#381e39 reads as cool, muted, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #381e39
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 #381e39 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/381e39-c19fbe-98cb62-2d1f28-ede9f1?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