A glass composition of the soda-lime-silicate type is described which includes, by weight, the following coloring agents: 0.2-0.45% of Fe.sub.2O.sub.3 (total iron), 2-8 ppm of Se, 0-20 ppm of CoO, and 0-80 ppm of NiO. The coloring agents satisfy the relationship, 0.7<(200.times.NiO) +(5000.times.Se)+(6.times.Fe.sup.3+)/(875.times.CoO)+(24.times.Fe.sup.2+)- <1.6 in which the NiO, Se, Fe.sup.3+, CoO and Fe.sup.2+contents are expressed in ppm, Fe.sup.3+and Fe.sup.2+are the content of ferric iron expressed in the form of Fe.sub.2O.sub.3 and FeO, respectively. The composition has a redox from 0.28 to 0.5, an overall light transmission under illuminant A (T.sub.LA) greater than 65% and a selectivity (SE) of greater than 1.25, when measured for a thickness of 3.85 mm. A window formed from at least one glass sheet produced from the aforementioned composition is also described.