Color Gamut Coverage Calculator
Calculate and compare color gamut coverage of displays using CIE chromaticity coordinates.
Color Space Converter
Convert RGB values between different color spaces with XYZ intermediate calculation.
CIELAB 3D Gamut Visualization
Compare display gamuts in 3D CIELAB color space using Display #1 and #2 coordinates.
Gamut and Color Space Formulas
Mathematical foundations for color gamut calculations and conversions.
Understanding Color Spaces
Learn about the origins, characteristics, and use cases of major color spaces.
sRGB was developed by HP and Microsoft in 1996 as a standard color space for monitors, printers, and the internet.
It remains the most widely used color space for web content, consumer displays, and digital photography. Most images without an embedded profile are assumed to be sRGB.
DCI-P3 was established by the Digital Cinema Initiatives consortium for theatrical film projection. It offers approximately 25% more colors than sRGB.
Apple popularized Display P3 (a variant with D65 white point) in consumer devices starting with the iMac in 2015, now standard on iPhones and MacBooks.
Adobe RGB was created to encompass most CMYK colors achievable on high-quality inkjet printers, making it ideal for print workflows.
It extends significantly into cyan-green regions compared to sRGB. Professional photographers and print designers often work in Adobe RGB for maximum color fidelity.
Rec. 2020 is the color space standard for Ultra HD television, covering approximately 75% of the visible spectrum using laser-like primary colors.
No current display technology can fully reproduce Rec. 2020. It serves as a mastering target for HDR content and future-proof archival format.
What is Color Gamut Coverage?
Understanding how display color reproduction is measured and compared.
Gamut coverage measures what percentage of a reference color space a display can actually reproduce. A display with 95% sRGB coverage can show 95% of all sRGB colors.
This is the most meaningful metric for content creators, as it directly indicates whether your display can accurately show the colors in your work.
Gamut volume (or area ratio) compares the total size of a display’s gamut to a reference. A 120% sRGB volume means the display shows 20% more total colors than sRGB.
This number can be misleading. A display could have 150% sRGB volume while missing important sRGB colors by extending into different regions.
CIE 1931 xy diagram is the classic chromaticity chart but has uneven perceptual spacing. Equal distances don’t represent equal color differences to human vision.
CIE 1976 u’v’ is more perceptually uniform, making it better for accurate coverage calculations. Professional measurements typically use u’v’ coordinates.
For web and general use, 99%+ sRGB coverage is sufficient. Video editors should look for high DCI-P3 coverage. Print professionals need strong Adobe RGB performance.
HDR content benefits from wide gamut displays approaching Rec. 2020, though current technology typically achieves 70-80% coverage at best.