The colors of packaging bag printing are varied, let's explore the secrets from the source factory.

To achieve desirable colors requires understanding the principles of color change. Shunxingyuan Packaging, a soft packaging source factory, employs numerous printing masters with over 20 years of experience. Below, we'll share their color mixing expertise and reveal how these exquisite packaging bags are printed. ， This will also help customers better understand printing when designing packaging artwork.

I. Principles of Primary Color Changes

1. Printing The primary colors of printing inks are yellow, magenta, and cyan. Mixing any two in equal amounts produces a secondary color; mixing two secondary colors in equal amounts produces a tertiary color; mixing the three primary colors in equal amounts produces black.

2. Mixing the three primary color inks in equal amounts, and then adding white ink in varying proportions, creates various shades of gray ink.

3. The hue of a secondary or tertiary color tends towards the primary color with the larger proportion.

4. Adding black ink to any color darkens it; adding white ink brightens it.

Mixing Ratios of Primary Color Inks

Furthermore, hue differences should be achieved by mixing different colored inks, and saturation differences can be adjusted by adding transparent ink. In the three primary color inks, the amount of each color, that is, the mutual proportions, is very important and can produce a series of colors such as:

Yellow (more) + Magenta (less) → Orange

Yellow (less) + Magenta (more) → Red

Magenta (more) + Cyan (less) → Red-violet

Magenta (less) + Cyan (more) → Blue-violet

Yellow (more) + Cyan (less) → Blue-green

Yellow (less) + Cyan (more) → Green

Yellow (more) + Magenta (more) + Cyan (less) → Brown

Yellow (less) + Magenta (more) + Cyan (less) → Carmine

Yellow (more) + Magenta (less) + Cyan (less) → Yellow-brown

Yellow (more) + Magenta (less) + Cyan (more) → Olive

II. Using Complementary Colors for Ink Mixing

According to the principle of subtractive color mixing and complementary colors, complementary colors add up to achromatic colors. When mixing colored inks, complementary colors should be used correctly. Sometimes complementary colors should be avoided. For example, when mixing secondary colors or diluting primary colors, the mixing of complementary colors should be avoided as much as possible, because the more complementary colors are mixed, the more achromatic components are in the ink, the lower the saturation, and the darker the color.

If the hue needs to be adjusted during ink mixing, complementary colors can also be used. For example, if blue ink is too red and needs to be shifted towards yellow, a small amount of green ink can be added, because the red and green light reflected by the ink mix to produce yellow light.

To make white whiter, adding a small amount (1%) of ultramarine blue can eliminate the yellow tone in white. When black is not dark enough, adding a small amount of Phthalocyanine Blue Black to black ink can make it very black. In printing, adding a small amount of Phthalocyanine Blue to black ink can eliminate the yellow tone in black ink, making the black ink even blacker.

III. Color Repetition and Juxtaposition

Printing two or more colors repeatedly on top of each other creates a common color. In general, the superimposed colors are mostly transparent colors.

Color juxtaposition is placing one color next to another. Their contrasting effects enhance or weaken their inherent properties, creating a new color sensation. For example, red and yellow juxtaposed make the red appear more purple and the yellow more green; red and cyan juxtaposed make the red appear more orange and the cyan more green.

IV. Comparison of Hue Variations in Colored Inks

Hue Variations of Inks

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