The main difference between Black and Grey is hue — Black is a neutral near-black, while Grey is a neutral gray. Black (#000000) has an HSL of 0°, 0%, 0%, whereas Grey (#808080) sits at 0°, 0%, 50%.
Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.
Black is more saturated (0% HSL vs 0%) so it reads as bolder and more memorable at logo scale, while Grey can feel washed out when printed small.
Black hits a 21.00:1 WCAG contrast against white — safer for text-heavy interfaces — where Grey only reaches 3.95:1 and risks failing AA at small body sizes.
Grey is a cool-leaning tone that flatters spring/summer collections and warmer skin undertones, while Black leans cooler and is better suited to autumn/winter layering.
Black is the more muted of the two (0% saturation) and sits more calmly on large wall surfaces, while Grey's higher chroma can overwhelm a room when used beyond accent pieces.
Black (#000000) is a very dark, near-neutral near-black with a neutral undertone — it feels deep, heavy, grounded 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.