1. What is the CCT Calculation?

The CCT (Correlated Color Temperature) calculation estimates the color temperature of a light source from its CIE chromaticity coordinates. It's crucial in lighting design, photography, and display technologies.

2. How Does the Calculator Work?

The calculator uses the CCT equation:

Where:

• \( x \) — CIE 1931 chromaticity coordinate
• The equation represents a polynomial approximation of the relationship between chromaticity and color temperature

Explanation: The equation transforms the chromaticity coordinate into an estimate of the color temperature in Kelvin.

3. Importance of CCT Calculation

Details: Color temperature affects visual perception, mood, and color rendering. Accurate CCT calculation is essential for lighting design, display calibration, and color-critical applications.

4. Using the Calculator

Tips: Enter the CIE x coordinate (typically between 0.1 and 0.4 for most light sources). The value must be valid (x > 0).

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range for CCT values?
A: Common values range from 2700K (warm white) to 6500K (daylight), but can extend beyond this range.

Q2: How accurate is this calculation?
A: This is an approximation. For precise measurements, spectrometer readings are recommended.

Q3: What about the y coordinate?
A: This simplified calculation uses only the x coordinate. More precise methods use both x and y coordinates.

Q4: When is this calculation most useful?
A: For quick estimates of color temperature when only the x coordinate is available.

Q5: Are there limitations to this equation?
A: Accuracy decreases at extreme color temperatures and for non-blackbody light sources.