Change the context
The gray may look lighter against the dark field.
Make your own study
Does one swatch seem brighter, warmer or more saturated? The effect varies with the palette, display and viewer.
Join the swatches with a strip of the same ink, or give them a shared neutral surround. Their RGB values stay fixed.
A palette chip is only a starting point. Check a color beside the backgrounds it will actually have.
Take the three-color palette into your own work
Select and copy. These are your chosen colors, not accessibility recommendations.
02 / Let your eyes set the color
Can you match a gray
without its number?
Adjust B until it looks like A. Then reveal the numerical difference. This is a personal observation, not a vision test. The studio above and this exercise are independent.
The reference remains fixed. Only B changes with the slider.
Difference = your gray minus the reference, per RGB channel. It is not a perceptual distance or a percentage score. Results stay in this page.