... Z calculated in corresponding functions under GB3978 standard illuminant D65, A, C and 10°, 2° view of field. l Display method: computer ... .002l Palette system: l Color: X, Y, Z; Y, x, y; L*, a*, b*; L, a, b; L*, u*, v*; L*, c*, h*l ... difference: Δ E (L*a*b*); ΔE (Lab); ΔE (L*u*v*); ΔL*, ΔC*, ΔH*l Whiteness: W, Tl Computer system: Pentium 4 or ...