Color

#0f381f

#0f381f
hex#0f381f
rgbrgb(15, 56, 31)
hslhsl(143, 58%, 14%)
oklchoklch(0.304 0.064 153.3)
Closest name: Dark Serpent (#113311)Relative luminance 0.0303

Colors that go with #0f381f

Charcoal, Royal Blue and Rust 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 →

#380f29

#14380f · #0f3834

#1f0f38 · #381f0f

Split-complementary

Open in tool →

#340f38 · #380f14

#0f1438 · #380f29 · #38340f

Contrast

#0f381f as textRatioAAAA largeAAAFix
Aaon white
13.08:1passpasspassPasses AAA — no fix needed.
Aaon black
1.61:1failfailfail
  • AA: use #238549 as the text (4.52:1)
  • AAA: use #2ead5f as the text (7.26:1)
  • AA: or shift the background to #999999 (4.59:1)
  • AAA: or shift the background to #bfbfbf (7.11:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #0f381f as the background.

Brands using this color

Fonts for this mood

#0f381f reads as dark, luxury, bold. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #0f381f
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 #0f381f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/0f381f-a2beb0-c859d4-1f2d2b-eaf1e9?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