Instructions for coloring pictures with Krita

Video Instructions for coloring pictures with Krita

Krita is not only a great digital painting software, but also helps you paint beautiful works. This article will show you some painting techniques when using Krita.

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Understanding the layers

For comfortable painting, it's best to take advantage of Krita 's Layer Stack . It is one of the features that makes digital painting super convenient.

In traditional painting, it's not uncommon to draw a scene in front of a main subject or draw a line before coloring. Drawing pictures on the computer is similar.

In programming, if you ask the computer to draw the red circle, then the smaller yellow circle, you will see the yellow one overlap the red. In return, you will no longer see the yellow circle because it is drawn before red so it will be "behind" it. This is the basic "painting order".

Like traditional art, computers first draw pictures first, so that they can drill down into details, place objects and foreground on it. Layer docker is how you control the order of drawing multiple images. For example, you can draw lines after coloring to make them easier to adjust. In addition, Layer Stack can help you blend colors of different layers through Blending mode, apply filters or masks to create transparent parts.

Prepare to paint line art

Place a new layer below the painting layer (drag & drop or use the up / down arrows), then paint on it.

Instructions for coloring pictures with Krita
Prepare a line art to color in Krita

At first, you will not see any change due to the white color is not transparent. Want your work to really stand out? That's why we need to color the picture. Here are some methods of coloring pictures with Krita with different advantages and disadvantages.

Blend mode Multiply

Normally, if you want to paint in black and white, you can set the layer blending mode to Multiply. Do this by selecting the layer and going to the drop down menu, clicking Normal , and then selecting Multiply .

Instructions for coloring pictures with Krita
Krita will paint this color when you perform the above task

However, Multiply is not the perfect solution. For example, if you use some photo editing tools on paintings with blue strokes, you will get the following result:

Instructions for coloring pictures with Krita
The result when applying Multiply on line art is not black and white

This is because Krita applies true Multiply, literally "multiplying" colors.

First, it takes the RGB channel values, then divides them to the maximum. This process is called "standardization." Next, it multiplies the normalized values. Then take the result, then multiply it by 255 again to get the final value. Many artists apply this effect when they want to add a little "glow" to their colors.

  Pink Standard pink Green Blue Standard blue Standardized & multiplied Result
Red  222 0.8705 92 0.3607 0.3139 80
Green 222 0.5647 176 0.6902 0.3897 99
Green 123 0.5647 215 0.8431 0.4066 103

Pros: Easy to implement, can be used even on colored lines by softening lines while preserving the necessary contrast.

Cons : The background is not completely transparent, only adding a bit of fun to the color lines.

Use Selections

The second method is to make it really transparent. In other software, you can do this via the Channel docker, but Krita doesn't allow customizing the channels. Instead, it uses Selection Masks to contain customization options.

1. Duplicate the layer that contains the painting.
2. Convert the copy into a selection mask layer. Click Instructions for coloring pictures with Kritaon the layer, then press Convert ‣ to Selection Mask .

Instructions for coloring pictures with Krita
Select lineart for Krita to fill

3. Invert the selection mask: Select ‣ Invert Selection .
4. Create a new layer and click Edit ‣ Fill with Foreground Color .

Instructions for coloring pictures with Krita
Now your painting is on a separate layer.

Pros : The background layer is really transparent.

Cons : Does not apply to colored works.

Use Masks

This is a simpler solution than the above.

1. Create a filled layer below the layer containing the painting.

Instructions for coloring pictures with Krita

2. Convert layer containing transparent layer painting: Click Instructions for coloring pictures with Kritalayer>  Convert ‣ to Transparency Mask .

Instructions for coloring pictures with Krita

3. Invert the transparent mask by going to Filter ‣ Adjust ‣ Invert .

Instructions for coloring pictures with Krita

Pros : The background layer is really transparent. You can also freely draw textures on the overlay layer without overlaying the transparency.

Cons : Not applicable on colored lines.

Use Color to Alpha

This is the fastest way to clarify lines in a picture. Select the line art layer and apply color to the alpha filter: Filter ‣ Colors ‣ Color to Alpha . The default value is consistent with the line art picture.

Instructions for coloring pictures with Krita

Pros: The background is completely transparent. Apply well to painted line art because it specializes in whitening.

Cons : You must lock the transparent layer or separate alpha by right-clicking the menu if you want to color it easily.

There are many different ways to color a layer. For example, you can color everything manually. Despite its high accuracy, this method takes a lot of work. Instead, you can choose another solution.

Fill Tool

In most cases, the Fill Tool cannot aliasing (soften edges in line art to make it smoother when zoomed in). Using Krita, you have two options for zooming in and out.

The threshold determines when the Fill tool uses a different color pixel as a border and uses Feather to add a soft border when painting.

Now, if you click on the part where there is no gap in the image with the color you want (remember 1.0 for opacity), depending on the line art, you can fill it quite quickly. However, setting a low threshold may generate small details around the intersection.

Instructions for coloring pictures with Krita

However, setting a high threshold may prevent you from recognizing some light colored lines. Meanwhile, you can completely erase that small strange detail easily with a brush.

Pros : Quick performance depending on available settings.

Cons : Not suitable for rich detailed paintings.

Selections

Instructions for coloring pictures with Krita

As the name implies, this way you will use the selection tool. For example, with the Path Selection Tool, you can select the curve area and with Shift+ Instructions for coloring pictures with Krita(not Instructions for coloring pictures with Krita+ Shift). You can easily add to the current selection.

Instructions for coloring pictures with Krita

You can also edit the selection if the Select ‣ Show Global Selection Mask is enabled . Then select the whole overlay and paint over it. (The example above uses an alternate mode, enabled in the lower left corner of the status bar.)

When done, select the color you want to paint and press Shift+ spacebar.

Instructions for coloring pictures with Krita

You can save selections in Selections mask layers by clicking Instructions for coloring pictures with Kritathe layer, then Add Add Local Selection . First, you need to deactivate an option by clicking on the circle before adding a new option. You can use this method to separate different parts of an image, especially useful for professional painters.

Instructions for coloring pictures with Krita

Pros: More accurate color gradation.

Cons: Color preview is not easy.

Geometric tools

In Krita, you have a tool to create a rectangle or circle. It is a tool for bezier curves. Select the Path Tool and set the tool options to fill = foreground and outline = none. Make sure you set the opacity to 1.00 (complete blur).

By clicking and holding the mouse button, you can affect the curve drawn with the Path Tool. Use the mouse button to confirm the action, then you're free to draw the next point.

Instructions for coloring pictures with Krita

You can also use geometry tools to erase points by pressing Eor erasing button.

Instructions for coloring pictures with Krita

Pros : Faster than brushes or Selections, suitable for line art with gaps.

Cons : Not easy to fill the small details. In this case, you should use a brush to color them.

Color correction overlay - Colorize Mask

Follow these instructions to use Krita's Colorize Mask feature:

  1. Select the Colorize Mask tool.
  2. Check the layer you are using.
  3. Fill the color you want into this overlay.
  4. Click Update to see the results.
Instructions for coloring pictures with Krita

When you're satisfied, click Instructions for coloring pictures with Kritaon that color overlay and go to Convert ‣ Paint Layer . This will turn the adjustment layer mask into a layer. You can then fix the latest error by applying 1/2 transparency to the lines and filling the hole with a pixel brush.

Instructions for coloring pictures with Krita

Once done, split the layer to Layer ‣ Split ‣ Split Layer. Here, Krita offers a number of options, but just do as the picture looks good.

Instructions for coloring pictures with Krita

Finally, click OK . Each color applies on a different layer, named according to the palette in the menu and locked alpha. Thanks to that, you can draw immediately.

Instructions for coloring pictures with Krita

Advantages : Handling with line art works does not remove the teeth. Quickly complete basic painting jobs. Can automatically fill in gaps.

Cons : Not self-aliasing. You have to choose between getting the details right or automatically filling in the gaps.

Above is a guide to coloring pictures with Krita . Hope the article is helpful to you.

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