Color

#3ff396

#3ff396
hex#3ff396
rgbrgb(63, 243, 150)
hslhsl(149, 88%, 60%)
oklchoklch(0.854 0.193 155.2)
Closest name: mediumspringgreen (#00fa9a)Relative luminance 0.6736

Colors that go with #3ff396

Violet, Charcoal and Deep Sky 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 →

#f33f9c

#42f33f · #3ff3f0

#963ff3 · #f3963f

Split-complementary

Open in tool →

#f03ff3 · #f33f42

#3f42f3 · #f33f9c · #f3f03f

Contrast

#3ff396 as textRatioAAAA largeAAAFix
Aaon white
1.45:1failfailfail
  • AA: use #098645 as the text (4.66:1)
  • AAA: use #066534 as the text (7.19:1)
  • AA: or shift the background to #5c5c5c (4.61:1)
  • AAA: or shift the background to #404040 (7.15:1)
Aaon black
14.47:1passpasspassPasses 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 #3ff396 as the background.

Brands using this color

mcpConnect your agent — build around #3ff396
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 #3ff396 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3ff396-a2beb3-d459d4-1f2d2c-e9f1e9?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