Coming from an audio background where we have the fletcher-munson noise curve, I'm really curious to learn more about how the eye perceives light. Does anyone have other sources for this, please?
A somewhat similar idea to the Fletcher-Munson noise curve is the “just noticeable difference” https://en.wikipedia.org/wiki/Just-noticeable_difference which can be mapped across color differences https://en.wikipedia.org/wiki/Color_difference to figure out how people perceive the brightness of a given color https://en.wikipedia.org/wiki/Brightness
Curious though, how serious of an impact would time of day have on this curve? If someone took the test in the early morning, would yellow be more striking/harsh than if they viewed it at night? Would blue be more striking after a day of saturated sunlight?
Edit: Blue and yellow are similarly placed on the chart, apparently accounting for the morning/night sensitivity
Illuminant is a big factor in appearance, so time of day matters a lot in the sense that if the sun is the primary illuminant, it changes color based on the angle in the sky and atmospheric conditions.
It’s an interesting question, and hard to answer due to perception and adaptation - our system is really good at compensating for things like illuminant and brightness and “color surround” (background colors). We adapt pretty fast to changes in condition (think about how long it took ... before Covid ... to adapt after walking out of a midday movie in a theater), and we’re better at seeing relative color differentials than absolute colors, so the physiological perception of blue isn’t likely to change after a day of sunlight (I guess). But just the memory of the day’s colors or yesterday’s color might affect what you think you see...
https://en.wikipedia.org/wiki/CIELAB_color_space https://en.wikipedia.org/wiki/Colour_banding