Color

#213f2b

#213f2b
hex#213f2b
rgbrgb(33, 63, 43)
hslhsl(140, 31%, 19%)
oklchoklch(0.338 0.051 153.6)
Closest name: Everglade (#264334)Relative luminance 0.0405

Colors that go with #213f2b

Dark Olive Green, Teal and Amber 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 →

#3f2135

#263f21 · #213f3a

#2b213f · #3f2b21

Split-complementary

Open in tool →

#3a213f · #3f2126

#21263f · #3f2135 · #3f3a21

Contrast

#213f2b as textRatioAAAA largeAAAFix
Aaon white
11.6:1passpasspassPasses AAA — no fix needed.
Aaon black
1.81:1failfailfail
  • AA: use #458259 as the text (4.59:1)
  • AAA: use #58a772 as the text (7.19:1)
  • AA: or shift the background to #a3a3a3 (4.6:1)
  • AAA: or shift the background to #c9c9c9 (7:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #213f2b as the background.

Brands using this color

Palettes built around it

Fonts for this mood

#213f2b reads as muted, dark, luxury. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #213f2b
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 #213f2b and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/213f2b-a2beaf-c259d4-1f2d2a-ebf1e9?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