Color

#218c2d

#218c2d
hex#218c2d
rgbrgb(33, 140, 45)
hslhsl(127, 62%, 34%)
oklchoklch(0.561 0.163 144.5)
Closest name: Forest Green (#228b22)Relative luminance 0.1927

Colors that go with #218c2d

Charcoal, Royal Blue and Dark Orchid 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 →

#8c2180

#4a8c21 · #218c63

#2d218c · #8c2d21

Split-complementary

Open in tool →

#63218c · #8c214a

#214a8c · #8c2180 · #8c6321

Contrast

#218c2d as textRatioAAAA largeAAAFix
Aaon white
4.33:1failpassfail
  • AA: use #20882c as the text (4.55:1)
  • AAA: use #176320 as the text (7.39:1)
  • AA: or shift the background to #0a0a0a (4.58:1)
Aaon black
4.85:1passpassfail
  • AAA: use #29ae38 as the text (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 #218c2d as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

mcpConnect your agent — build around #218c2d
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 #218c2d and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/218c2d-a2bea8-aa4edf-1f2d27-ecf1e9?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