Color

#218c2f

#218c2f
hex#218c2f
rgbrgb(33, 140, 47)
hslhsl(128, 62%, 34%)
oklchoklch(0.562 0.161 144.8)
Closest name: Forest Green (#228b22)Relative luminance 0.1928

Colors that go with #218c2f

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 →

#8c217e

#488c21 · #218c65

#2f218c · #8c2f21

Split-complementary

Open in tool →

#65218c · #8c2148

#21488c · #8c217e · #8c6521

Contrast

#218c2f as textRatioAAAA largeAAAFix
Aaon white
4.32:1failpassfail
  • AA: use #20882e as the text (4.54:1)
  • AAA: use #176321 as the text (7.39:1)
  • AA: or shift the background to #0a0a0a (4.58:1)
Aaon black
4.86:1passpassfail
  • AAA: use #29ae3a 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 #218c2f 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 #218c2f
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 #218c2f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/218c2f-a2bea9-ac4edf-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