Adding the hex value for your chosen color to the left card in conjunction with adjusting the slider will allow you to increase or decrease the brightness of the color between -100% and 100%. The default value is 0%.

Adding the hex value for your chosen color to the left card in conjunction with adjusting the slider will allow you to increase or decrease the saturation of the color between 0% and 200%. The default value is 100%.

Adding hex value's for your two chosen colors to the first and last swatch will generate 7 colors inbetween the ones chosen. This number can be increased up to 21 swatches, or decreased to 3, this can be achieved by clicking the +/- signs above.