HTML colors by mixing red, green, blue made.
Color values
HTML color is defined by a hexadecimal notation, the symbol of the red, green and blue values of the composition (RGB).
The minimum value of each color is 0 (hex: # 00). The maximum value is 255 (hex: #FF).
Black: # 000000, rgb (0,0,0)
White: # FFFFFF, rgb (255,255,255)
NOTE: Decimal Hex turn 2AF3 --- 2 * 16 ^ 3 + 10 * 16 ^ 2 + 15 * 16 + 3 * 16 ^ 0
HTML color name : https://www.runoob.com/html/html-colornames.html