When you select the Light blue after selecting Cyan. you will get #03A9F3FF.
But, if you select Light blue after selecting Blue, you will get correct value #03A9F3FF but color is different.
This is a bug and it doesn’t happen with just those colors, it also happens with colors manually entered. This only affects what colors it shows in the color picker, the result in the companion and compiled APK will be perfectly fine.