Hue circle theory

There are 8 different colors in the hue circle. In other words, color group 1 (basic color) has blue, red, yellow and green.
Color group 2 (mixed color) has purple, orange, yellowish green and bluish green.
Color group 2 is made by mixing two colors of color group 1. For example, purple is made with red and blue.
Orange is made with yellow and red. Yellowish green is made with yellow and green. Bluish green is the mixture of blue and green.

Adjacent colors : You get a vivider color when mixing neighbouring colors in the hue circle.

Complementary color, contrast color : A turbid color is created when mixing opposite colors in the hue circle. Also, color difference may occur depending on the light source.For example, using green to lessen red feeling, or using yellow to lessen blue feeling makes a turbid color.Thus try not to mix like this

Terms

1) When comparing color difference, always distinguish it with 3 characteristics below.

• * Cast : Refers to red tone, yellow tone, blue tone, green tone, etc. A color has tones from 2 directions. Red can have blue or yellow tone and cannot have green tone. Orange can have red or yellow tone and cannot have blue or green tone.
• * Depth(Brightness) : For solid colors, depth stands for the degree of black and white. For metallic colors, it means brightness and darkness of the color.
• Chroma(Grayness) : Refers to vividness and turbidness of a color

Color Matching

Consideration before color matching

1) There are several things to consider before color matching, especially for metallic colors.

Thinning	Lack of thinner : vivid	Excessive thinner : turbid
Air	High : brighter	Low : dark
Room temperature	High : brighter	Low : dark
Spray gun	High air pressure : bright and soft	Low air pressure : dark and rough
Spraying method	Mist spray : bright	Wet-coat spray : dark
Thinner	Fast thinner : bright	Slow thinner : dark