5-step gradient: Black (#000000) to Luminous vivid aquamarine (#00ff99).

RGB Gradient: Black to Luminous vivid aquamarine

Spot colors

 
 
 
 
 
#000000 #003f26 #007f4c #00bf72 #00ff99

Linear gradient

CSS
background-image: linear-gradient(135deg, #000000, #00ff99);
Output

HSV Clockwise Gradient: Black to Luminous vivid aquamarine

Spot colors

 
 
 
 
 
#000000 #3f3a2f #6c7f3f #36bf2f #00ff99

Linear gradient

CSS
background-image: linear-gradient(135deg, #000000, #3f3a2f, #6c7f3f, #36bf2f, #00ff99);
Output

HSV Counterclockwise Gradient: Black to Luminous vivid aquamarine

Spot colors

 
 
 
 
 
#000000 #3f2f3d #523f7f #2f7ebf #00ff99

Linear gradient

CSS
background-image: linear-gradient(135deg, #000000, #3f2f3d, #523f7f, #2f7ebf, #00ff99);
Output