What is a simple way to master rgba, # color thingy.

Question

For example rgba(255,255,255,.6) and #fff how to know what color it is in a simple way.

Answer 1

RGB stands for red-green-blue but you probably know that.

Take a look at the color wheel: https://upload.wikimedia.org/wikipedia/commons/thumb/6/6d/RGB_color_wheel_360.svg/1200px-RGB_color_wheel_360.svg.png

First, find red, green, and blue on the edge of the image. Now, pick any color on the color wheel. If you increase the red, you will move towards the red point of the image. If you decrease the red, you move towards the *opposite* color on the color wheel (cyan).

So:
less red = more cyan
less green = more magenta
less blue = more yellow

And of course, if you increase any of r, g, or b, your color will become brighter. If you decrease it it will become darker.

Become familiar with the color wheel, and look online at color pickers and play around with them for a few minutes, and you will be able to approximately tell what color is what!

PS: If the red, green and blue part are the same you get gray.

Answer 2

You are the best! thanks