Color

#1b371c

#1b371c
hex#1b371c
rgbrgb(27, 55, 28)
hslhsl(122, 34%, 16%)
oklchoklch(0.306 0.058 144.7)
Closest name: Darkest Forest (#223311)Relative luminance 0.0305

Colors that go with #1b371c

Dark Olive Green, 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 →

#371b36

#28371b · #1b372a

#1c1b37 · #371c1b

Split-complementary

Open in tool →

#2a1b37 · #371b28

#1b2837 · #371b36 · #372a1b

Contrast

#1b371c as textRatioAAAA largeAAAFix
Aaon white
13.04:1passpasspassPasses AAA — no fix needed.
Aaon black
1.61:1failfailfail
  • AA: use #428544 as the text (4.67:1)
  • AAA: use #52a755 as the text (7.02:1)
  • AA: or shift the background to #999999 (4.58:1)
  • AAA: or shift the background to #bfbfbf (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 #1b371c as the background.

Brands using this color

Fonts for this mood

#1b371c reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #1b371c
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 #1b371c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/1b371c-a2bea6-9e4edf-1f2d26-edf1e9?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