[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"content-seo:colorMemory":3},{"description":4,"seo":5,"faq":8},"The Color Memory Test asks you to rebuild a color you only saw for a moment. Each round has three steps. A target color fills the screen for a set time (5 seconds on Easy, 3 on Normal, 1.5 on Hard). Then it disappears, and you recreate it from memory with Hue (0–359°), Saturation (0–100%) and Brightness (0–100%) sliders or a color wheel. Lock it in and the target and your guess are revealed side by side. Play five rounds; the average is your final score. Unlike Color Match, where the target stays on screen while you mix, here the color is hidden before you start.\n\nScoring uses CIEDE2000 (ΔE00), the color-difference formula published by the International Commission on Illumination (CIE) in 2001. Both colors are converted from sRGB to CIELAB (D65 white point), and the distance is weighted for how differently the eye perceives changes in lightness, chroma and hue, so it tracks visible difference far better than plain RGB distance. Each round converts ΔE00 to 100 ÷ (1 + (ΔE00 ÷ 12)²)%: ΔE00 2 is about 97%, 5 about 85%, 10 about 59% and 20 about 26%. Grades: S from 90%, A from 80%, B from 65%, C from 45%, D below that. Targets are drawn with saturation and brightness between 35% and 92%, so you won't get near-grays, near-blacks or neon extremes.\n\nHow to read ΔE00: a value around 1 is commonly treated as roughly the smallest difference a trained observer can spot with the two colors side by side, and 2–3 as a difference most people notice in a side-by-side comparison. These are rules of thumb that shift with viewing conditions, not a single official threshold. Since this game works from memory, errors well above that range are normal.\n\nYour screen matters too. Night mode and blue-light filters tint the whole display warm and make blues especially hard, and very low or auto-adjusting brightness throws off your sense of lightness. For a fair comparison, switch filters off and keep brightness fixed. It runs in the browser with no install or sign-up, and your best score is saved only on this device. It's a game, not a color vision test.",{"ogTitle":6,"ogDescription":7},"Color Memory Test | Recreate a Color from Memory - Giggleus","🎨 See a color for a few seconds, then rebuild it from memory with hue, saturation and brightness. Five rounds scored by CIEDE2000 (ΔE00) color difference.",[9,12,15,18,21],{"question":10,"answer":11},"How does the color memory test work?","You see a color for a few seconds, it disappears, and you recreate it from memory. Here it shows for 5 s (Easy), 3 s (Normal) or 1.5 s (Hard); you rebuild it with hue, saturation and brightness sliders or a color wheel, and five rounds are averaged.",{"question":13,"answer":14},"What is Delta E (ΔE00)?","It's a number for how different two colors look to the human eye, computed with the CIEDE2000 formula published by the CIE in 2001. 0 means identical; around 1 is commonly treated as about the smallest difference a trained eye can see side by side, and 2–3 as noticeable to most people in a side-by-side comparison — rules of thumb that depend on viewing conditions.",{"question":16,"answer":17},"How is the score calculated?","Each round's ΔE00 between the target and your color becomes 100 ÷ (1 + (ΔE00 ÷ 12)²)%, and the final score is the average of five rounds. ΔE00 2 ≈ 97%, 5 ≈ 85%, 10 ≈ 59%; 90% or higher earns an S.",{"question":19,"answer":20},"Does night mode or a blue-light filter affect the result?","Yes. Night mode and blue-light filters shift the whole screen toward yellow, which makes blues especially hard, and auto-brightness changes throw off your sense of lightness. Turn them off and compare scores on the same device and brightness.",{"question":22,"answer":23},"How is this different from Color Match?","In Color Match the target stays on screen while you mix RGB sliders. In the Color Memory Test the color is hidden first and you recreate it from memory, and scoring uses the perceptual ΔE00 color difference instead of RGB distance."]