Choosing colors that look good together is only half the job. The other half โ making sure text stays readable against its background for people with low vision or color blindness โ is the part that's easy to skip and expensive to fix later.
Contrast is not optional
WCAG accessibility guidelines set minimum contrast ratios between text and its background for good reason: below a certain threshold, text becomes genuinely hard to read, not just aesthetically weak. Running your color pairs through a contrast checker before finalizing a design catches this early, when it's a five-minute fix instead of a redesign.
Generating a palette that holds together
Picking one nice color is easy; picking four or five that work together as a coherent palette is harder. A color palette generator builds out complementary, analogous, or monochromatic sets starting from a single base color, giving you a real starting point instead of guessing.
Gradients that don't look accidental
A gradient that transitions through a muddy, undefined color in the middle usually means the two endpoint colors were picked without checking what's between them. A CSS gradient generator lets you preview the full transition and adjust before it ends up in production.
Getting exact values, not close guesses
When a client hands you a brand color as a Pantone swatch, a screenshot, or "sort of like this," converting it precisely with a color picker avoids the drift that happens when everyone eyeballs their own version of "close enough."
Good color choices and accessible color choices aren't in tension โ checking contrast just adds one extra step before you commit to a palette.