#3fff00 - Harlequin color

A vivid, electric lime green reminiscent of fresh chartreuse, bursting with fluorescent energy. It reads as a striking, high-saturation yellow-green that sits between pure lime and neon green. The hue feels lively, modern, and attention-grabbing—ideal for accents, call-to-action buttons, safety signage, or contemporary branding. It conveys freshness, vitality, and urgency; under warm lighting it leans more yellow, while cooler light emphasizes its intense green character.

#3fff00 color RGB value is 63, 255, 0, and the CMYK value is 0.753, 0.00, 1.00, 0.00. Alternative names for that color are: harlequin, yellow, lime, electric lime.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	63, 255, 0	rgb(63, 255, 0)
CMYK	0.753, 0.00, 1.00, 0.00	-
sRGB	0.247, 1.00, 0.00	rgb(24.7%, 100%, 0%)
Adobe® 98 RGB compatible	0.596, 1.00, 0.234	color(a98-rgb, 0.596, 1, 0.234)
HCT	141, 106, 88.2	color(--hct, 141, 73%, 88.2%)
HSL	105, 100, 50.0	hsl(105, 100%, 50%)
HSV	105, 100, 100	color(--hsv, 105, 100%, 100%)
HWB	105, 0.00, 0.00	hwb(105, 0%, 0%)
Lab	88.3, -74.8, 81.7	lab(88.3%, -74.8, 81.7)
P3	0.505, 0.986, 0.300	color(display-p3, 0.505, 0.986, 0.3)
XYZ D50	0.407, 0.728, 0.0978	color(xyz-d50, 0.407, 0.728, 0.098)