# File lib/pixels.rb, line 489
489:     def color_from_rgb(r, g, b)
490:       # Convert 8 bits-per-channel to 5 bits-per-channel
491:       r5 = (r.to_i >> 3) & 0x1f
492:       g5 = (g.to_i >> 3) & 0x1f
493:       b5 = (b.to_i >> 3) & 0x1f
494:       return (b5 << 10) | (g5 << 5) | r5
495:     end