Color contrast and emotional psychology: collision of warm and cold red, green, blue and orange and low saturation Morandi color tone control

1. The physiological instinct of color and the physics of emotional perception

Color is by no means simply a physical optical wavelength of the retina. It is firmly bound to millions of years of human evolutionary instinct deep in the cerebral cortex:

1. Warm colors (long-wave red, orange, yellow) - energy, aggression and closeness:

• The longest wavelength (620nm~750nm), focused behind the retina, has a strong visual sense of Advancing Color and expansion.
• Awakens hormones in the endocrine system, conveying warmth, passion, danger warning, appetite, enthusiasm and restlessness.

2. Cold colors (short wave blue, cyan, cool purple) - retreat, tranquility and rationality:

• It has a physical sense of receding (Receding Color) and contraction, making the space appear far-reaching and empty.
• Reduces heart rate and blood pressure, inducing calmness, solitude, melancholy, technological rationality, sublime and sacred contemplation.

2. The visual conflict tension of complementary colors on the color wheel

Bauhaus color master Johannes Itten pointed out: On the 360-degree hue circle, two colors that are strictly 180° straight and opposite are called complementary colors. When complementary colors are juxtaposed, they will trigger the physiological compensation reaction of the human optic nerve, bursting out the strongest visual contrast:

1. Blue and Orange (Blue and Orange) – a cinematic classic golden pairing:

• Why do 90% of Hollywood blockbusters use cyan and warm orange?
• The skin reflectance spectra (Melanin base) of all different human races are strictly located in the warm orange (55°~65°) narrow range of the color wheel;
• The complementary color that is completely opposite to warm orange happens to be Aquamarine (235°~245°).
• Dye the background environment into a cool blue and the character's skin tone into a warm gold. The characters instantly stand out three-dimensionally from the background like a relief, creating a natural sense of transparency and visual pleasure.

2. Red and Green (Red and Green) - Dialogue of Life in Nature:

• If the pure red and green are too saturated, they will easily become cliché ("red and green are bullshit");
• Advanced usage: The difference in brightness and area between the two must be widened - for example, in a heavy forest background of dark green or army green, add a touch of bright red lip color or a small red umbrella with extremely high brightness (the area ratio is controlled at 9:1), and red instantly becomes the only punctum of the picture.

3. Low saturation Morandi tone and advanced gray spectrum control

In recent years, highly saturated and bright colors have gradually caused aesthetic fatigue among viewers. The "low-purity gray aesthetics" founded by Italian still life painter Giorgio Morandi has become popular in modern art photography:

1. Desaturation & Neutralization:

• Any dazzling primary color, when mixed with a large amount of white (high-brightness pink turbidity) or neutral gray, the originally tense and aggressive color is instantly eliminated.
• When Morandi colors (such as bean paste green, oatmeal gray, smoky pink, haze blue, camel gray) are juxtaposed with each other, there is no conflict with each other, exuding an extremely peaceful, restrained, restrained and noble intellectual atmosphere.

2. Practical technique for modulating Morandi’s tone in digital post-processing:

• Step 1 (Reduce the overall vividness, retain weak saturation): Lower the overall saturation by -20 to -30 in the HSL panel. It is strictly forbidden to completely fade into black and white, and retain the faint tendency of the color to float.
• Step 2 (Mix neutral gray into shadows and highlights): In the curve tool, lift the deepest pure black control point in the lower left corner up by 5% (black level becomes gray), and pull down the brightest control point in the upper right corner by 5% (white level convergence) to forcibly compress the absolute brightness contrast of the picture.
• Step 3 (Color Warm and Cool Normalization): Use the three-way color wheel (Color Wheels) to add a faint gray-warm brown to the shadows and a faint gray-cool green to the highlights, so that the picture is enveloped in a layer of elegant and even foggy gray tones.

4. Strict coordination of actual scenes and colors of costumes and props

1. Color Scouting:

• Before shooting, you must not only examine the light and shadow, but also closely examine the dominant tones of the environment (such as gray cement walls, retro warm colors of red bricks, and cold colors of glass curtain walls).

2. Strict subtraction of costumes and props:

• Guide models to wear colors that are coordinated with the environment (such as matching khaki or off-white windbreakers in a forest scene) or restrained complementary colors;
• Resolutely eliminate any dazzling fluorescent color debris from appearing in the viewfinder, and the color order of the entire picture is as tight as a symphony.

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