Lightness Meaning
Lightness, in colorimetry and color theory, also known as value or tone, is a representation of variation in the perception of color or brightness of a color space. It is one of the color appearance parameters of any color appearance model.
Several color models have an explicit term for this property. The Munsell color model uses the term value, while the HSL color model, HCL color space, and Lab color space use the term lightness. The HSV model uses the term value a little differently: a color with a low value is almost black, but one with a high value is pure, fully saturated color.
In subtractive colors (i.e. paintings), value changes can be achieved by adding black or white to the color. Artists can also employ shading, subtle manipulation of value.
Characteristics of lightness in UX design
If not recording it as a rocket science principle we will consider characteristics of lightness in UX design from the side of usability — you are back against the wall conveying a sense of airiness, simplicity and ease. Since it’s crucial for interface creating your end-users have to feel invited to use interface within the visual clarity aspect, achieved through ample whitespace, minimalist layouts, simple typogtraphy.
Into the bargain lightness of the UX design promoted a sense of accessibility and inclusivity so it’s available for all the target audiences and end-users so ensure your interface is including people with disabilities or the ones that use diverse devices.