You can also increase and decrease the lightness of a color, resulting in tints and shades of a hue, respectively.
Tints occur when white is applied to a color, adding or increasing the lightness of a hue.
Shades are created when black is added to a color, which decreases the lightness of a hue.
Use neon colors sparingly. While the use of neon colors can feel hip, they are often hard on a user’s eyes.
Avoid vibrating colors. Vibrating colors result from pairing two colors with high saturation together that may be complementary to one another. It creates a glowing or moving effect, which also can be hard on one’s eyes. Tip: Use backdrops to separate vibrating colors.
Avoid color combinations with insufficient contrast, including:
Names
RGB values (RGBA for adding transparency)
hexadecimal values
HSL values (HSLA for adding transparency)