#66ff11 - Poisoning Green color

This vibrant lime-green hue feels electric and zesty, like freshly cut grass under bright sunlight. Intensely saturated and almost neon in presence, it commands attention as an energetic accent that conveys youthfulness, vitality, and modernity. It reads as both organic and synthetic—suggesting eco-friendly themes or tech-forward branding. Best used sparingly against deep charcoal, navy, or muted purple to maximize contrast; on pale backgrounds it can overwhelm and reduce legibility, so careful pairing is essential.

#66ff11 color RGB value is 102, 255, 17, and the CMYK value is 0.600, 0.00, 0.933, 0.00. Alternative names for that color are: poisoning green, yellow, lawngreen, bright green, electric lime.

Open Color Palette Builder Open Color Wheel

Color Conversion

Name	Values	CSS
RGB(0-255)	102, 255, 17	rgb(102, 255, 17)
CMYK	0.600, 0.00, 0.933, 0.00	-
sRGB	0.400, 1.00, 0.0667	rgb(40%, 100%, 6.67%)
Adobe® 98 RGB compatible	0.644, 1.00, 0.248	color(a98-rgb, 0.644, 1, 0.248)
HCT	139, 101, 89.1	color(--hct, 139, 69.5%, 89.1%)
HSL	98.6, 100, 53.3	hsl(98.6, 100%, 53.3%)
HSV	98.6, 93.3, 100	color(--hsv, 98.6, 93.3%, 100%)
HWB	98.6, 6.67, 0.00	hwb(98.6, 6.67%, 0%)
Lab	89.2, -67.6, 81.5	lab(89.2%, -67.6, 81.5)
P3	0.572, 0.987, 0.313	color(display-p3, 0.572, 0.987, 0.313)
XYZ D50	0.444, 0.747, 0.103	color(xyz-d50, 0.444, 0.747, 0.103)