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hsl2rgb = () ->
[h,s,l] = unpack arguments
if s == 0
r = g = b = l*255
else
t3 = [0,0,0]
c = [0,0,0]
t2 = if l < 0.5 then l * (1+s) else l+s-l*s
t1 = 2 * l - t2
h /= 360
t3[0] = h + 1/3
t3[1] = h
t3[2] = h - 1/3
for i in [0..2]
t3[i] += 1 if t3[i] < 0
t3[i] -= 1 if t3[i] > 1
if 6 * t3[i] < 1
c[i] = t1 + (t2 - t1) * 6 * t3[i]
else if 2 * t3[i] < 1
c[i] = t2
else if 3 * t3[i] < 2
c[i] = t1 + (t2 - t1) * ((2 / 3) - t3[i]) * 6
else
c[i] = t1
[r,g,b] = [Math.round(c[0]*255),Math.round(c[1]*255),Math.round(c[2]*255)]
[r,g,b]
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