The main difference between Grey and Charcoal is hue — Grey is a neutral gray, while Charcoal is a cool blue. Grey (#808080) and Charcoal (#36454F) are similar colors often confused. They differ in brightness, saturation, and undertone, making each better suited for different design contexts.
Four real design scenarios, with the recommended pick based on hue, saturation, and WCAG contrast.
Charcoal is more saturated (19% HSL vs 0%) so it reads as bolder and more memorable at logo scale, while Grey can feel washed out when printed small.
Charcoal hits a 9.90:1 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 Charcoal leans cooler and is better suited to autumn/winter layering.
Grey is the more muted of the two (0% saturation) and sits more calmly on large wall surfaces, while Charcoal's higher chroma can overwhelm a room when used beyond accent pieces.
Grey (#808080) is a medium, near-neutral gray with a neutral undertone — it feels balanced, versatile and desaturated and restrained.
Charcoal (#36454F) is a dark, muted blue with a cool undertone — it feels rich, serious, substantial and subdued, sophisticated.
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.