LAB Color Space: Perceptually Uniform Color for Designers
Learn the CIE LAB color space and why it's perceptually uniform. Understand L*, a*, b* axes and how LAB is used in color difference calculations.
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Tags: color, theory, developer-tools
LAB Color Space: Perceptually Uniform Color for Designers LAB color space — specifically CIELAB — is the color model that color scientists, Photoshop power users, and ICC profile engineers reach for when RGB and HSL aren't precise enough. It's not particularly intuitive at first, but understanding it solves problems that RGB-based thinking can't. The core idea: LAB describes color the way human vision actually works, not the way a screen's hardware works. The numbers in LAB correlate directly to perceived differences — a delta of 10 in LAB is roughly the same perceptual change regardless of what color you start from. RGB makes no such promise. What CIELAB Is CIELAB (or CIE L\a\b\, often written just "Lab") is a color space defined by the International Commission on Illumination (CIE) in…
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