Color is very subjective. After all about 20% of the male population have one form or another of colorblindness. What you refer to as cheap another iPhone owner may perceive as correct, royal or some other superlative adjective. Two screens from two different manufactures will have two different firmwares and different software to display colors on the screen.
Colors in the computer world are not defined by a word. Colors are made from the 3 primary colors, Red, Green and Blue. The exact mix of R,G and B will determine the luminous, saturation and hue (commonly referred to as HSL). So, what one company describes as yellow will never match what another company calls yellow. Why? The HSL values are different and are subjective.
You don’t provide any context as to what you’re doing. If you want to share what you’re trying to accomplish, it’s possible there’s a way.