Color

#00381c

#00381c
hex#00381c
rgbrgb(0, 56, 28)
hslhsl(150, 100%, 11%)
oklchoklch(0.299 0.074 154.8)
Closest name: Dark Serpent (#113311)Relative luminance 0.0291

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#38001c

#003800 · #003838

#1c0038 · #381c00

Split-complementary

Open in tool →

#380038 · #380000

#000038 · #38001c · #383800

Contrast

#00381c as textRatioAAAA largeAAAFix
Aaon white
13.27:1passpasspassPasses AAA — no fix needed.
Aaon black
1.58:1failfailfail
  • AA: use #008a45 as the text (4.72:1)
  • AAA: use #00ad57 as the text (7.12:1)
  • AA: or shift the background to #999999 (4.66:1)
  • AAA: or shift the background to #bdbdbd (7.06:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #00381c 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

#00381c reads as vivid, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #00381c
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #00381c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/00381c-a2beb3-d459d2-1f2d2c-e9f1ea?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