The main difference between Light Gray and Grey is brightness and saturation: both are gray shades, but Light Gray is lighter. Light Gray (#D3D3D3) has an HSL of 0°, 0%, 83%, whereas Grey (#808080) sits at 0°, 0%, 50%.
Light Gray (#D3D3D3) is a very light, near-neutral gray with a neutral undertone — it feels pale, delicate, gentle and desaturated and restrained.
Grey (#808080) is a medium, near-neutral gray with a neutral undertone — it feels balanced, versatile and desaturated and restrained.
Text legibility depends on the contrast ratio between foreground and background. WCAG 2.1 AA requires at least 4.5:1 for normal text and 3:1 for large text; AAA requires 7:1. Use these numbers to choose accessible combinations for your design.
Each color has a dedicated page with shades, tints, CSS name, pairings, and color psychology.