For flowers, different colours represent different meanings. The best colours for friends are yellow, white, blue and purple. Yellow symbolises friendship, blue and purple signifies loyalty and white means love and compassion.
For families, the colours pink, white and purple work best. In the family context, pink carnations mean gratitude. If you're looking for flowers for your spouse or partner, the colours red, pink, and white will be the best choices as those colours represent love, appreciation and passion.