You can use the Adobe Color Picker to select the foreground or background color by choosing from a color spectrum or by defining colors numerically. In addition, you can select colors based on HSB or RGB color models, or choose to select only web‑safe colors.
Enter the hexadecimal value for your color in the text box under the RGB values. (Hexadecimal color values are often used by web designers.)
For RGB color, select a radio button and specify component values from 0 to 255 (0 is no light and 255 is the brightest light).
For HSB color, select a radio button and specify saturation and brightness as percentages; specify hue as an angle from 0° to 360° that corresponds to a location on the color wheel.