https://drive.google.com/drive/folders/1fa8-UBDQ_P_-pmJktBjwwVRfSbfyipkp?usp=sharing

RGBtoHSVtoCMY.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApplication8
{
    public partial class Form1 : Form
    {
        private System.Drawing.Graphics g;
        private System.Drawing.Pen pen1 = new System.Drawing.Pen(Color.Blue, 3);
        Rectangle kwadrat, kwadrat2, kwadrat3, kwadrat4, kwadrat5, kwadrat6;

        private void button2_Click(object sender, EventArgs e)
        {
            Refresh();
            
        }

        private void pictureBox1_MouseClick(object sender, MouseEventArgs e)
        {
            Color pixel = bm.GetPixel(e.X, e.Y);
            double c = 1 - (System.Convert.ToDouble(pixel.R) / 255);
            double m = 1 - (System.Convert.ToDouble(pixel.G) / 255);
            double y = 1 - (System.Convert.ToDouble(pixel.B) / 255);
            //MessageBox.Show("RGB:" + System.Convert.ToString(pixel.R) + "," + System.Convert.ToString(pixel.G) + "," + System.Convert.ToString(pixel.B));
            textBox1.Text = "RGB:" + System.Convert.ToString(pixel.R) + "," + System.Convert.ToString(pixel.G) + "," + System.Convert.ToString(pixel.B);
            textBox2.Text = "CMY:" + System.Convert.ToString(c) + "," + System.Convert.ToString(m) + "," + System.Convert.ToString(y);

            double r = System.Convert.ToDouble(pixel.R);
            double g = System.Convert.ToDouble(pixel.G);
            double b = System.Convert.ToDouble(pixel.B);
            double delta, min;
            double h = 0, s, v;

            min = Math.Min(Math.Min(r, g), b);
            v = Math.Max(Math.Max(r, g), b);
            delta = v - min;

            if (v == 0.0)
                s = 0;
            else
                s = delta / v;

            if (s == 0)
                h = 0.0;

            else
            {
                if (r == v)
                    h = (g - b) / delta;
                else if (g == v)
                    h = 2 + (b - r) / delta;
                else if (b == v)
                    h = 4 + (r - g) / delta;

                h *= 60;

                if (h < 0.0)
                    h = h + 360;
            }
            v /= 255;
            textBox3.Text = "HSV:" + System.Convert.ToString(h) + "," + System.Convert.ToString(s) + "," + System.Convert.ToString(v);
        }

        Bitmap bm;

        
        
        public Form1()
        {
            InitializeComponent();
           
          //  rysunek = Graphics.FromImage(pictureBox1.Image);

           
        }

        private void button1_Click(object sender, EventArgs e)
        {
            int x = pictureBox1.Width;
            int y = pictureBox1.Height;
            bm = new Bitmap(x, y);

            Graphics gr = Graphics.FromImage(bm);


            for (int i = 0; i < 101; i++)
            {
                for (int j = 0; j < 101; j++)
                {
                    int u = (int)(i * 255.0 / 100);
                    int v = (int)(j * 255.0 / 100);
                    pen1.Color = Color.FromArgb(255 - u, 0, v);
                    gr.DrawRectangle(pen1, 0 + i, 0 + j, 1, 1);

                    // pictureBox1.Refresh();
                }

            }
            
            for (int i = 0; i < 101; i++)
            {
                for
                (
                int
                j = 0; j < 101; j++)
                {
                    int u = (int)(i * 255.0 / 100);
                    int v = (int)(j * 255.0 / 100);
                    pen1.Color = Color.FromArgb(255 - u, 0, v);
                    gr.DrawRectangle(pen1, 0 + i, 0 + j, 1, 1);
                    // pictureBox1.Refresh();
                }
            }

            for (int i = 0; i < 101; i++)
            {
                for
                (
                int
                j = 0; j < 101; j++)
                {
                    int u = (int)(i * 255.0 / 100);
                    int v = (int)(j * 255.0 / 100);
                    pen1.Color = Color.FromArgb(255 - u, 255, v);
                    gr.DrawRectangle(pen1, 101 + i, j, 1, 1);
                    // pictureBox1.Refresh();

                }
            }

            for (int i = 0; i < 101; i++)
            {
                for
                (
                int
                j = 0; j < 101; j++)
                {
                    int u = (int)(i * 255.0 / 100);
                    int v = (int)(j * 255.0 / 100);
                    pen1.Color = Color.FromArgb(255 - u, v, 0);
                    gr.DrawRectangle(pen1, 201 + i, j, 1, 1);
                    // pictureBox1.Refresh();

                }
            }

            for (int i = 0; i < 101; i++)
            {
                for
                (
                int
                j = 0; j < 101; j++)
                {
                    int u = (int)(i * 255.0 / 100);
                    int v = (int)(j * 255.0 / 100);
                    pen1.Color = Color.FromArgb(255 - u, v, 255);
                    gr.DrawRectangle(pen1, 301 + i, j, 1, 1);
                    // pictureBox1.Refresh();

                }
            }

            for (int i = 0; i < 101; i++)
            {
                for
                (
                int
                j = 0; j < 101; j++)
                {
                    int u = (int)(i * 255.0 / 100);
                    int v = (int)(j * 255.0 / 100);
                    pen1.Color = Color.FromArgb(u, 255 - v, 0);
                    gr.DrawRectangle(pen1, 401 + i, j, 1, 1);
                    // pictureBox1.Refresh();

                }
            }
            for (int i = 0; i < 101; i++)
            {
                for
                (
                int
                j = 0; j < 101; j++)
                {
                    int u = (int)(i * 255.0 / 100);
                    int v = (int)(j * 255.0 / 100);
                    pen1.Color = Color.FromArgb(u, 255 - v, 255);
                    gr.DrawRectangle(pen1, 501 + i, j, 1, 1);
                    // pictureBox1.Refresh();

                }
            }
            pictureBox1.Image = bm;
        }
        private void pictureBox1_Click(object sender, EventArgs e)
        {
            
        }

        private void trackBar1_Scroll(object sender, EventArgs e)
        {
            Refresh();
            int x = pictureBox1.Width;
            int y = pictureBox1.Height;
            bm = new Bitmap(x, y);

            Graphics gr = Graphics.FromImage(bm);
            pictureBox1.BackColor = Color.FromArgb(trackBar1.Value, trackBar2.Value, trackBar3.Value);

        }
        private void trackBar2_Scroll_1(object sender, EventArgs e)
        {

            Refresh();
            int x = pictureBox1.Width;
            int y = pictureBox1.Height;
            bm = new Bitmap(x, y);

            Graphics gr = Graphics.FromImage(bm);
            pictureBox1.BackColor = Color.FromArgb(trackBar1.Value, trackBar2.Value, trackBar3.Value);

        }

        private void trackBar3_Scroll_1(object sender, EventArgs e)
        {

            Refresh();
            int x = pictureBox1.Width;
            int y = pictureBox1.Height;
            bm = new Bitmap(x, y);

            Graphics gr = Graphics.FromImage(bm);
            pictureBox1.BackColor = Color.FromArgb(trackBar1.Value, trackBar2.Value, trackBar3.Value);

        }
 
    
    }
}