The White & Blue wavelength is usually use to grow leafy vegetables.
The White lights consist of Warm White (<3000K), Natural White (4000-5000K), Pure White (6000-6500K) & Cool White (>11000K).
For flower & fruit plants, the Warm White is preferred whereas for leafy vegetables, the Pure White & Cool White are two good combination.
LEDprincess LED Grow Panel provides dual wavelengths with dimmer to control both the White & Blue lights.
www.LEDprincess.com