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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10.     private static float hueToRGB(float m1, float m2, float h) {
  11.         if(h < 0) {
  12.             h += 1.0f;
  13.         } else if(h > 1.0f) {
  14.             h -= 1.0f;
  15.         }
  16.  
  17.         if((h * 6) < 1) {
  18.             return m1 + (m2 - m1) * 6 * h;
  19.         } else if((h * 2) < 1) {
  20.             return m2;
  21.         } else if((h * 3) < 2) {
  22.             return m1 + (m2 - m1) * ((2.0f / 3.0f) - h) * 6;
  23.         } else {
  24.             return m1;
  25.         }
  26.     }
  27.  
  28.     public static void main(String[] args) {
  29.         float h = 180.0f / 360.0f;
  30.         float s = 100.0f / 100.0f;
  31.         float l =  38.0f / 100.0f;
  32.         float r = 0;
  33.         float g = 0;
  34.         float b = 0;
  35.  
  36.         if(s == 0.0) {
  37.             r = g = b = l;
  38.         } else {
  39.             float m2 = l < 0.5 ? l * (1 + s) : (l + s) - (l * s);
  40.             float m1 = (l * 2) - m2;
  41.  
  42.             r = hueToRGB(m1, m2, h + (1.0f / 3.0f));
  43.             g = hueToRGB(m1, m2, h);
  44.             b = hueToRGB(m1, m2, h - (1.0f / 3.0f));
  45.         }
  46.  
  47.         System.out.printf("%.2f %.2f %.2f -> %.2f %.2f %.2f",
  48.                           h, s, l,
  49.                           r, g, b);
  50.     }
  51.  
  52. }
Success #stdin #stdout 0.08s 380160KB
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0.50 1.00 0.38 -> 0.00 0.76 0.76
https://ideone.com/lsus2t
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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