Color

#213b2a

#213b2a
hex#213b2a
rgbrgb(33, 59, 42)
hslhsl(141, 28%, 18%)
oklchoklch(0.326 0.044 154.5)
Closest name: Queen of Trees (#1c401f)Relative luminance 0.0362

Colors that go with #213b2a

Dark Olive Green, Sienna and Teal 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 →

#3b2132

#253b21 · #213b37

#2a213b · #3b2a21

Split-complementary

Open in tool →

#37213b · #3b2125

#21253b · #3b2132 · #3b3721

Contrast

#213b2a as textRatioAAAA largeAAAFix
Aaon white
12.18:1passpasspassPasses AAA — no fix needed.
Aaon black
1.72:1failfailfail
  • AA: use #49835d as the text (4.69:1)
  • AAA: use #5fa578 as the text (7.14:1)
  • AA: or shift the background to #9e9e9e (4.55:1)
  • AAA: or shift the background to #c7c7c7 (7.21:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #213b2a as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#213b2a reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #213b2a
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 #213b2a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/213b2a-a2beaf-c459d4-1f2d2a-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