Train your visual memory! In this mode, you will face 5 random colors. You get 10 seconds to memorize each shade. Once it disappears, you must slide the HSL controllers to recreate it.
The closer you get, the higher your score out of 10.00!
Lab Note: Hue is circular (0° and 360° are both Red). Saturation controls the color's richness, and Lightness controls brightness.
Pick-a-Boo is a free browser-based color matching game and color match makerthat challenges you to recreate target colors using HSL (Hue, Saturation, Lightness) sliders. Whether you're a designer sharpening your color perception, a student learning about color theory, or just someone who loves puzzle games, Pick-a-Boo is the ultimate online color memory gamefor every skill level.
When the game begins, a random target color is shown for 10 seconds. Study it carefully — memorize its hue, richness, and brightness. Once it disappears, use the three HSL sliders to recreate it as accurately as possible. The closer your guess, the higher your score out of 10.00. Play across 5 rounds in Classic mode, go unlimited in Zen mode, or race the clock in Time Attack!
Playing visual memory games like Pick-a-Boo regularly can significantly improve your color perception, attention to detail, and pattern recognition. Artists, UI designers, and photographers especially benefit from training their ability to distinguish subtle differences in hue, saturation, and lightness — the same skills tested in the game.
HSL stands for Hue, Saturation, and Lightness. It is a human-friendly color model used widely in web design and digital art. Hue is the color angle on the color wheel (0°–360°, where 0° is red, 120° is green, and 240° is blue). Saturation controls how vivid or gray the color appears (0% is grayscale, 100% is fully saturated). Lightness controls brightness (0% is black, 50% is the true color, 100% is white). Pick-a-Boo is a great hands-on way to learn and internalize the HSL color system.
Visual memory is the brain's ability to retain and recall visual information. Training it through engaging activities like color matching games has been shown to improve creative thinking, color sensitivity, and design decision-making. Pick-a-Boo turns this training into a fun, competitive game — track your personal bests and watch your color perception improve over time.
Pick-a-Boo is a free online color matching memory game where players recreate colors using HSL sliders. It's designed to train your visual memory and color perception in a fun, game-like format.
Yes! Pick-a-Boo is completely free to play. No download, registration, or payment required — just visit the page and start your color memory challenge instantly.
Your recreated color is compared to the target using a weighted HSL precision algorithm. Scores are given out of 10.00 — a perfect match earns 10, while partial matches score proportionally based on hue, saturation, and lightness accuracy.
Yes! Pick-a-Boo is fully responsive and works on both desktop and mobile devices. The HSL sliders are touch-friendly for a smooth experience on phones and tablets.
HSL stands for Hue, Saturation, and Lightness — a color model used in web design. Hue is the color type (0–360°), Saturation is the vividness (0–100%), and Lightness is the brightness (0–100%). Pick-a-Boo uses HSL to let you precisely recreate colors.
Pick-a-Boo offers three modes: Classic Match (5 rounds with a 10-second memorization window), Zen Practice (unlimited rounds with peek guides, no pressure), and Time Attack (match as many colors as you can in 60 seconds, with time bonuses for accuracy).
