Click on the box next to a number to set it. Green flag to reset. Hue is in degrees; saturation, lightness, value, cyan, magenta, yellow, and black are percents; red, green, and blue are 3-digit decimal numbers up to 255. HSV conversion only works one way as yet.
RGB is important because it is used by most monitors and screens. HSL is used by most color pickers, including Scratch. HSV is used by paintdotnet & al. CMYK is used by most printers. Please note that all numbers are subject to rounding. Credits: http://www.rapidtables.com/convert/color/hsl-to-rgb.htm http://www.rapidtables.com/convert/color/rgb-to-hsl.htm http://www.rapidtables.com/convert/color/rgb-to-cmyk.htm http://www.rapidtables.com/convert/color/cmyk-to-rgb.htm http://codeitdown.com/hsl-hsb-hsv-color/ I don't know why it says I updated it in August. The correct date is March 11.