Go to the Color picker page and click on the CCT icon to go to the CCT value page.

You can input a color temperature in kelvin value and press Apply to set the shade of white on your light.

Note:

CCT value is only available for products built with white LED and can provide true white light.

Products that do not have white LED cannot provide true white light. Although you can still get different shades of warm to cool light, you're not able to see the CCT value of the products.