# File lib/color/rgb.rb, line 247 247: def adjust_brightness(percent) 248: percent /= 100.0 249: percent += 1.0 250: percent = [ percent, 2.0 ].min 251: percent = [ 0.0, percent ].max 252: 253: hsl = to_hsl 254: hsl.l *= percent 255: hsl.to_rgb 256: end