5-step gradient: Strong red (#990000) to Very light yellow (#ffff99).

RGB Gradient: Strong red to Very light yellow

Spot colors

 
 
 
 
 
#990000 #b23f26 #cc7f4c #e5bf72 #ffff99

Linear gradient

CSS
background-image: linear-gradient(135deg, #990000, #ffff99);
Output

HSV Clockwise Gradient: Strong red to Very light yellow

Spot colors

 
 
 
 
 
#990000 #b2401a #cc843d #e5c567 #fffe99

Linear gradient

CSS
background-image: linear-gradient(135deg, #990000, #b2401a, #cc843d, #e5c567, #fffe99);
Output

HSV Counterclockwise Gradient: Strong red to Very light yellow

Spot colors

 
 
 
 
 
#990000 #8c1ab2 #3d84cc #67e586 #ffff99

Linear gradient

CSS
background-image: linear-gradient(135deg, #990000, #8c1ab2, #3d84cc, #67e586, #ffff99);
Output