5-step gradient: Black (#000000) to Luminous vivid cyan (#00ffff).

RGB Gradient: Black to Luminous vivid cyan

Spot colors

 
 
 
 
 
#000000 #003f3f #007f7f #00bfbf #00ffff

Linear gradient

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

HSV Clockwise Gradient: Black to Luminous vivid cyan

Spot colors

 
 
 
 
 
#000000 #3f3b2f #5f7f3f #2fbf53 #00ffff

Linear gradient

CSS
background-image: linear-gradient(135deg, #000000, #3f3b2f, #5f7f3f, #2fbf53, #00ffff);
Output

HSV Counterclockwise Gradient: Black to Luminous vivid cyan

Spot colors

 
 
 
 
 
#000000 #3f2f3b #5f3f7f #2f53bf #00ffff

Linear gradient

CSS
background-image: linear-gradient(135deg, #000000, #3f2f3b, #5f3f7f, #2f53bf, #00ffff);
Output