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The study considers the effect of white and monochromatic light on the hatching of the hybrid ROSS 208 chickens. The chicken embryos were most sensitive to white light, reaching the hatching time of 499.80±2.65 hours, the hatchability of 95.08±2.43 %, and an average weight of the hatched chickens 47.17±3.08 g. Of the monochromatic lights, the chicken embryos were most sensitive to yellow light with the hatching time of 501.16±1.84 hours, the hatchability of 94.97±1.92% and average weight of hatched chicken 45.88±2.32g. The least reaction of chicken was observed with blue light, with the hatching time of 506.74±1.57 hours, hatchability 92.11±2.18 % and average weight of hatched chicken 42.13±2.07 g. The influence of blue light brings the same effects as we observed in the case of hatching in darkness when the hatching time reached 505.76 ± 2.15 hours, hatchability 91.62±1.62 % and an average weight of hatched chicken 41.73±1.95 g.