ACA Color Theory and Management 1 — Questions and Answers
Question 1: Which color mode uses Red, Green, and Blue channels and is best suited for digital screen display?
- CMYK
- RGB (Correct answer)
- LAB
- Grayscale
Correct answer: RGB
RGB is an additive color model designed for screen-based display, mixing light to produce colors.
Question 2: What does the 'K' stand for in the CMYK color model?
- Kelvin
- Khaki
- Key (Black) (Correct answer)
- Kontrol
Correct answer: Key (Black)
K stands for Key (Black), the fourth ink used in four-color printing to add depth and detail.
Question 3: Which color model is considered device-independent and is commonly used as a universal reference color space?
- RGB
- CMYK
- LAB (Correct answer)
- HSB
Correct answer: LAB
The LAB color model is device-independent and encompasses all colors visible to the human eye, making it ideal as a universal reference.
Question 4: What term describes the complete range of colors that a device or color space can reproduce?
- Hue
- Gamut (Correct answer)
- Saturation
- Chroma
Correct answer: Gamut
Gamut refers to the full range of colors that can be produced or represented by a specific device or color space.
Question 5: When converting an image from RGB to CMYK in Photoshop, why might some colors appear duller after conversion?
- The file size increases during conversion
- Some RGB colors fall outside the CMYK gamut (Correct answer)
- The image resolution is reduced automatically
- Layers are automatically flattened on conversion
Correct answer: Some RGB colors fall outside the CMYK gamut
CMYK has a smaller gamut than RGB, so vivid RGB colors that fall outside the printable range must be approximated with duller equivalents.
Question 6: In Adobe applications, what is the primary function of an ICC color profile?
- Converts an image to black and white
- Defines how color data should be interpreted for a specific device (Correct answer)
- Removes embedded metadata from an image file
- Increases the number of available color channels
Correct answer: Defines how color data should be interpreted for a specific device
An ICC color profile defines the color space of a device, ensuring consistent and predictable color reproduction across different devices and applications.
Question 7: In the HSB color model, which component describes the purity or intensity of a color?
- Hue
- Saturation (Correct answer)
- Brightness
- Contrast
Correct answer: Saturation
Saturation in HSB measures color purity or intensity, ranging from neutral gray at 0% to a fully vivid color at 100%.
ACA Color Theory and Management 1
Which color mode uses Red, Green, and Blue channels and is best suited for digital screen display?