Color

#3dff5a

#3dff5a
hex#3dff5a
rgbrgb(61, 255, 90)
hslhsl(129, 100%, 62%)
oklchoklch(0.876 0.256 144.9)
Closest name: Cathode Green (#00ff55)Relative luminance 0.7325

Colors that go with #3dff5a

Violet, Hot Pink and Plum 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 →

#ff3de2

#81ff3d · #3dffbb

#5a3dff · #ff5a3d

Split-complementary

Open in tool →

#bb3dff · #ff3d81

#3d81ff · #ff3de2 · #ffbb3d

Contrast

#3dff5a as textRatioAAAA largeAAAFix
Aaon white
1.34:1failfailfail
  • AA: use #008a15 as the text (4.52:1)
  • AAA: use #00660f as the text (7.22:1)
  • AA: or shift the background to #616161 (4.62:1)
  • AAA: or shift the background to #454545 (7.15:1)
Aaon black
15.65:1passpasspassPasses 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 #3dff5a 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 #3dff5a
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 #3dff5a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3dff5a-a2bea9-ae4edf-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