toHex static method
Convert to CSS hex: "#ffffff"
Implementation
static String toHex(int color) {
final int r = (color >> 16) & 0xFF;
final int g = (color >> 8) & 0xFF;
final int b = color & 0xFF;
return '#${r.toRadixString(16).padLeft(2, '0')}'
'${g.toRadixString(16).padLeft(2, '0')}'
'${b.toRadixString(16).padLeft(2, '0')}';
}