brandsweets

Color

#3fee56

#3fee56
hex#3fee56
rgbrgb(63, 238, 86)
hslhsl(128, 84%, 59%)
oklchoklch(0.833 0.239 144.8)
Closest name: Becquerel (#4bec13)Relative luminance 0.6288
Vivid
Open in palette toolCheck contrast

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →
3fee56ee3fd7

#ee3fd7

Analogous

Open in tool →
3fee567fee3f3feeae

#7fee3f · #3feeae

Triadic

Open in tool →
3fee56563feeee563f

#563fee · #ee563f

Split-complementary

Open in tool →
3fee56ae3feeee3f7f

#ae3fee · #ee3f7f

Tetradic

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3fee563f7feeee3fd7eeae3f

#3f7fee · #ee3fd7 · #eeae3f

Contrast

#3fee56 as textRatioAAAA largeAAAFix
Aaon white
1.55:1failfailfail
  • AA: use #0c881c as the text (4.61:1)
  • AAA: use #096716 as the text (7.09:1)
  • AA: or shift the background to #595959 (4.53:1)
  • AAA: or shift the background to #3d3d3d (7.02:1)
Aaon black
13.58:1passpasspassPasses 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 #3fee56 as the background.

Brands using this color

mcpConnect your agent — build around #3fee56
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

›analyze #3fee56 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/3fee56-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