The popular $19 add-on from developer Anastasiy Safari has gained a range of new capabilities:

I added Vector Shape color control, new color spaces like HSL, YCbCr, YUV, XYZ display on the color wheel. And also MagicPicker now displays the name of color, which is a real help for web designers and color blind artists! Full Retina/4K/5K+ screens scaling. And Interactive Help now makes it easier to learn all MagicPicker’s functionality. Still supports all Photoshops from CS3 up to newest CC2015.5.