rajfotografie

Color

Few things in photography are as fascinating—and sometimes as confusing—as color. Blue can appear green, yellow can lean toward orange… and that’s just the beginning.

Differences between screens, color grading in post-processing, and the use of color palettes can make things even more complex.

The good news? You don’t need to master every detail of color science to create beautiful images. Let’s explore the essentials: how color works, how it mixes, and how color spaces influence your photos.

Wavelengths

In photography, color is created by mixing light waves of different wavelengths. Each wavelength corresponds to a specific color we perceive.

Visible light

The human eye can only detect a small portion of the light spectrum—known as visible light. Think of a rainbow: it reveals the full range of colors contained in daylight.

Violet has the shortest visible wavelength (around 380–450 nanometers), while red has the longest (620–750 nanometers).

This spectrum becomes visible when white light is split, for example by a prism—or naturally, by raindrops creating a rainbow.

Each color occupies its own wavelength range, though these ranges aren’t evenly distributed. For example, green spans a wider range than yellow. There’s no strict pattern—just a continuous flow of color.

Visible spectrum overview

Color	Wavelength	RGB Code
Violet	380–450 nm	#7F00FF
Indigo	450–475 nm	#6F00FF
Blue	476–495 nm	#0000FF
Green	495–570 nm	#00FF00
Yellow	570–590 nm	#FFFF00
Orange	590–620 nm	#FFA500
Red	620–750 nm	#FF0000

Red, green, and blue form the foundation of all digital color (RGB). By adjusting their ratios, you can create millions of variations. For example, equal parts red and green create yellow. Shift the balance, and that yellow can become greenish or orange.

Invisible light

Beyond visible light lies a much broader spectrum. Ultraviolet, X-rays, and gamma rays have shorter wavelengths, while infrared, microwaves, and radio waves have longer ones—all invisible to the human eye.

Color Mixing

Colors can be combined in two fundamentally different ways: additive and subtractive mixing.

Additive color mixing

Additive mixing means “adding light.” When red, green, and blue light overlap, they create new colors. Combine all three at full intensity, and you get white light.

For example, red and blue together create magenta—a vibrant purplish-red. In RGB terms, magenta is #FF00FF, meaning full red, full blue, and no green.

Subtractive color mixing

Subtractive mixing works the opposite way: colors are removed (filtered) from white light. This method uses cyan, magenta, and yellow (CMY).

Each color absorbs certain wavelengths and reflects others. When combined, they gradually reduce light until the result is black.

Complementary colors

Every color has a complementary opposite. You can experience this visually: stare at a bright color and then look at a white surface—you’ll briefly see its complementary color. Red produces green, blue produces yellow, and so on.

What Are Color Spaces?

With millions of possible color combinations, how do we manage them? That’s where color spaces come in.

A color space defines the range of colors that can be displayed or captured. The larger the color space, the more subtle variations it can represent.

Think of it as a painter’s color fan: more swatches mean more nuance and creative flexibility.

JPEG vs RAW

Color spaces matter most when shooting JPEG. If you shoot RAW, the color space is applied later during editing, giving you maximum flexibility.

RGB

RGB is based on the primary colors red, green, and blue. By combining these, digital devices can reproduce a wide range of colors.

CMYK

Used in printing, CMYK stands for cyan, magenta, yellow, and black. Unlike RGB, it works with ink and pigments rather than light.

sRGB

The most widely used color space. It’s reliable, consistent, and supported by nearly all screens and printers—making it the safest choice for most applications.

Adobe RGB

A wider color space than sRGB, offering more subtle gradations—especially in greens and blues. However, you’ll only see the difference on devices that support it.

ProPhoto RGB

One of the largest color spaces available. It contains an extremely wide range of colors—even some that the human eye cannot perceive.

Choosing the right color space

The best choice depends on your workflow. Your camera, monitor, and printer all play a role. For most photographers, sRGB offers the best balance between compatibility and reliability—ensuring your colors look consistent everywhere.