The invention relates to novel monoazo compounds of formula (1), wherein R1 re resents H, Cl or CH3; R2 represents H or Cl; M2+ represents Mg2+, Mn2+ or Sr2+; Y1=represents COO- or SO3-; Y2=SO3-; Y3=Y4=Y5=H; or Y3=SO331 , Y2=Y4=Y5=H; or Y4=SO3-, Y2=Y3=Y5=H; or Y5=SO3-, Y2=Y3=Y4=H. The compounds of formula (1) are characterized by high intensity and light-fastness.

 
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