From wikipedia, the meter is defined as the length of the path travelled by light in a vacuum in 1/299,792,458 of a second. I’ve been reading about “color accuracy” and truecolor on the Mac, but I’m not clear on what “accuracy” means in this context. Accurate to what? Wikipedia defines blue as perceiving “a dominant wavelength between approximately 450 and 495 nanometers,” which seems to define it subjectively.
What’s the standard to define a color? What makes one blue more accurate or correct than another?