Color Space

BC: CS092 / PS392 / FA294

Yongbok Hwang, 20 Oct 2007

Color can be described in HSV, RGB, or CIE-LAB. This pure-color wheel shows 12 basic colors at full saturation and value.

  1. Fill in the RGB and luminance values, and rank the 12 basic colors by their luminance.
  2. Establish a visual intuition about how hue, saturation and value change the color appearance.

Basic Color HueSaturationValue RedGreenBlue LuminanceRank
red 0/1211 100 .549
orange 1/1211 1.50 .686
yellow 2/1211 110 .981
lime 3/1211 110 .903
green 4/1211 010 .885
spring 5/1211 01.5 .894
cyan 6/1211 011 .912
dodgerblue 7/1211 0.51 .5310
blue 8/1211 001 .2912
violet 9/1211 .501 .4011
magenta 10/1211 101 .607
pink 11/1211 10.5 .568
Color Image HueSaturationValue RedGreenBlue Luminance Describe the Color
0/12.51 1.5.5 .69 This pink is a lightened red. The red's saturation is lowered.
0/121.5 .500 .26 This color is a red with the value lowered. Its luminance is low.
2/12.51 11.5 .98 This yellow has a very high luminance. The original yellow's saturation is lowered.
2/121.5 .5.50 .52 This color is a yellow with its value lowered. It's value is near a 50% gray.
8/12.51 .5.51 .58 This light blue is the lowered satuation verison of the original blue. Its luminance is near a 50% gray.
8/121.5 00.5 .11 This color is a blue with its value lowered. Its luminance is near zero, making it a dark color.