Color

#3cc421

#3cc421
hex#3cc421
rgbrgb(60, 196, 33)
hslhsl(110, 71%, 45%)
oklchoklch(0.719 0.224 141)
Closest name: Crude Banana (#21c40e)Relative luminance 0.4055

Colors that go with #3cc421

Blue, Charcoal and Royal Blue 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 →

#a921c4

#8ec421 · #21c458

#213cc4 · #c4213c

Split-complementary

Open in tool →

#5821c4 · #c4218e

#218ec4 · #a921c4 · #c45821

Contrast

#3cc421 as textRatioAAAA largeAAAFix
Aaon white
2.31:1failfailfail
  • AA: use #2a8717 as the text (4.59:1)
  • AAA: use #1f6411 as the text (7.27:1)
  • AA: or shift the background to #3d3d3d (4.71:1)
  • AAA: or shift the background to #1f1f1f (7.15:1)
Aaon black
9.11:1passpasspassPasses AAA — no fix needed.

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #3cc421 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 #3cc421
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 #3cc421 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3cc421-a3bea2-814edf-1f2d23-eef1e9?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