Color

#05381e

#05381e
hex#05381e
rgbrgb(5, 56, 30)
hslhsl(149, 84%, 12%)
oklchoklch(0.301 0.07 155.2)
Closest name: Dark Serpent (#113311)Relative luminance 0.0295

Colors that go with #05381e

Charcoal, Crimson and Royal 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 →

#38051f

#063805 · #053837

#1e0538 · #381e05

Split-complementary

Open in tool →

#370538 · #380506

#050638 · #38051f · #383705

Contrast

#05381e as textRatioAAAA largeAAAFix
Aaon white
13.2:1passpasspassPasses AAA — no fix needed.
Aaon black
1.59:1failfailfail
  • AA: use #0c8848 as the text (4.63:1)
  • AAA: use #0fae5c as the text (7.23:1)
  • AA: or shift the background to #999999 (4.63:1)
  • AAA: or shift the background to #bdbdbd (7.03:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #05381e as the background.

Brands using this color

Fonts for this mood

#05381e reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #05381e
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 #05381e and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/05381e-a2beb3-d459d4-1f2d2c-e9f1e9?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