유용한 사이트 – http://www.color-hex.com/
Color-hex gives information about colors including color models (RGB,HSL,HSV and CMYK), Triadic colors, monochromatic colors and analogous colors calculated in color page. Color-hex.com also generates a simple css code for the selected color. Html element samples are also shown below the color detail page. Simply type the 6 digit color code in the box above and hit enter.