The thesis examines the effect of different factors, i.e. weft density, weave type and agglomeration of the interlacing points of the same type on the colour impression of a woven fabric. The experimental part is based on 60 samples which differ in weave type (we used 10 different weave types in which the technical face and technical back are the same), colour of the warp (we used white and black warp) and weft density (we used yarns with 15, 20 and 25 yarns / cm densities). We measured the colour values of the woven samples and used the measurements to make simulations of the samples. We then arranged the simulations in different ways and tried to visually evaluate the effect of density, effect of weave type and also the effect of the size and shape of agglomerated interlacing points of the same type on the colour impression of the woven fabric. The results of the colour measurements were sorted into tables and presented in graphs, which were used to find the samples within the observed groups of characteristics that showed the biggest colour differences, to calculate these colour differences and observe and explain the effect of the observed factors on the colour impression.