RGB to Adobe Hex Colour Plug In

Grasshopper
1

Hi All,

I was just wondering if there was a plug in where you pass in RGB’s and it returns a Hex Colour code you can then copy into Adobe programs (ie. photoshop etc). Just to save copying in 3 different values.

Example of the interface on Adobe colour which allows you to turn RGB to Hex.

https://color.adobe.com/create/color-wheel

2

A single line of c# can do that.

using System.Drawing;
  private void RunScript(System.Drawing.Color Color, ref object Hex)
  {
    Hex = System.Drawing.ColorTranslator.ToHtml(Color);
  }

2021-09-08 12_09_14-Window

c#_color-to-hex.gh (6.9 KB)

1 Like
4

Amazing @maje90

Is there a way of doing the opposite, where I pass in a Hex value and it spits out the RGB?

Thankyou so much! Sam

5

I’m using the attached definition to convert hex to rgb.

image
image1136×879 49.2 KB

hex_rgb.gh (10.0 KB)

2 Likes
6

If you also want the alpha value, I use the following:

Color to Hex using Regex

  private void RunScript(System.Drawing.Color color, ref object hex)
  {
    hex = String.Format("#{0:X2}{1:X2}{2:X2}{3:X2}", color.R, color.G, color.B, color.A);
  }

Hex to Color
(from stackoverflow)

using System.Drawing;
  private void RunScript(string hex, ref object color)
  {
    hex = hex.TrimStart('#');

    if (hex.Length == 6)
      color = Color.FromArgb(255, // hardcoded opaque
        int.Parse(hex.Substring(0, 2), System.Globalization.NumberStyles.HexNumber),
        int.Parse(hex.Substring(2, 2), System.Globalization.NumberStyles.HexNumber),
        int.Parse(hex.Substring(4, 2), System.Globalization.NumberStyles.HexNumber));
    else
      color = Color.FromArgb(
        int.Parse(hex.Substring(6, 2), System.Globalization.NumberStyles.HexNumber),
        int.Parse(hex.Substring(0, 2), System.Globalization.NumberStyles.HexNumber),
        int.Parse(hex.Substring(2, 2), System.Globalization.NumberStyles.HexNumber),
        int.Parse(hex.Substring(4, 2), System.Globalization.NumberStyles.HexNumber));

  }

I’ve also have both of these in the Heron add-in.

image
image973×404 53.8 KB

-Brian

1 Like
7

Is the opposite possible? I have hex colors and I need to unput them as a material color.

8

Why not using this ?
image

1 Like
9

I’m already doing this. However, I am given a set of Hex colors, I’m bringing them into Photoshop, looking up the Hex color, and then copying the CMYK values into grasshopper. If I am able to input hex color codes directly, it would save me tens of minutes a day over the course of this project.

10

This should do it no?

2 Likes
11

I don’t really understand your workflow. Could it be possible you describe it more clearly ?
If Hex color you can use the above script to transform to RGB color then use a component to transform it to CMYK.

I have done one in Nautilus for that

image
image784×610 37.9 KB

2 Likes
12

Martin! I skimmed over this - thank you! Exactly what I need

1 Like