Color

#3df55c

#3df55c
hex#3df55c
rgbrgb(61, 245, 92)
hslhsl(130, 90%, 60%)
oklchoklch(0.851 0.243 145.4)
Closest name: Cathode Green (#00ff55)Relative luminance 0.6707

Colors that go with #3df55c

Violet, Deep Sky Blue and Hot Pink 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 →

#f53dd6

#7af53d · #3df5b8

#5c3df5 · #f55c3d

Split-complementary

Open in tool →

#b83df5 · #f53d7a

#3d7af5 · #f53dd6 · #f5b83d

Contrast

#3df55c as textRatioAAAA largeAAAFix
Aaon white
1.46:1failfailfail
  • AA: use #07881d as the text (4.62:1)
  • AAA: use #056615 as the text (7.2:1)
  • AA: or shift the background to #5c5c5c (4.59:1)
  • AAA: or shift the background to #404040 (7.12:1)
Aaon black
14.41:1passpasspassPasses 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 #3df55c 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 #3df55c
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 #3df55c and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3df55c-a2beaa-b14edf-1f2d28-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