... in such industries as textile, dye, printing and dyeing, coating, paint, paper making, building materials, food, and printing. Specificationsl Lighting conditions ... ; Y, x, y; L*, a*, b*; L, a, b; L*, u*, v*; L*, c*, h*l Color difference: Δ E (L*a*b ... *); ΔE (Lab); ΔE (L*u*v*); ΔL*, ΔC*, ΔH*l Whiteness: W, Tl Computer system: Pentium ...