[null,null,["上次更新時間:2025-07-27 (世界標準時間)。"],[],[],null,["# Color on TV design can inspire, set the mood and even drive users to make\ndecisions. It's a powerful and tangible element that users notice first.\nAs a rich way to connect with a wide audience, it's no wonder color is an\nimportant step in crafting a high quality TV interface.\n\nHighlights\n----------\n\n- The \"Standard\" picture mode is the most common TV display setting.\n- Most TVs support sRGB.\n- When choosing colors, consider that users watch TV at varying distances, and in low-light.\n- The display technology and the color space settings of TVs can vary greatly.\n- Make sure to test with as many device and color space variations as are practical.\n- Take into account different user needs and preferences when using color.\n- Pay attention to common TV problems, like banding, when using gradients.\n\nTV colors and TV displays\n-------------------------\n\nIt's a common misconception that all displays show all colors in the same way.\nMaybe you've noticed it while using a work laptop or watching a film at\na friend's. The same color may vary between TV models, computer\nmonitors, and mobile devices.\n\nColor space\n-----------\n\nColor space refers to the spectrum of colors that a TV display can reproduce.\nThese include the sRGB and the DCI-P3 color spaces. sRGB is the most widely\nused color space and is compatible with the largest range of TV models.\nIt is used in operating systems, TV shows, and games.\n\nChoosing the DCI-P3 color space can result in videos that appear more vivid\nand lifelike. Since content made in DCI-P3 has access to a larger percentage\nof colors, the content may only be compatible with advanced TV displays.\n| **Tip:** When designing basic UI elements, use the standard sRGB color space to maximize consistency across a range of TV models.\n\nPicture mode\n------------\n\nPicture modes can affect color quality on TV by changing the way that\nthe TV processes the image. For example, Standard picture modes\ntypically try to produce a more accurate color representation, while\nVivid picture modes increase the saturation of the colors to\nmake them more vibrant.\n\nThe default picture mode for most TV panels is Standard. This mode is designed\nto provide a balanced picture with accurate colors. But a user has many options\nto choose from. Many users change picture modes to improve perceived\npicture quality.\n\nLet's look at seven common picture modes:\n\n- **Standard**: Default picture mode. It provides a balanced picture with accurate colors.\n- **Vivid**: Increases the saturation of the colors, making them more vibrant.\n- **Dynamic**: Increases the contrast of the image, making it appear sharper.\n- **Game**: Optimizes the picture for gaming, reducing input lag.\n- **Movie**: Optimizes the picture for watching movies, reducing motion blur.\n- **Sports**: Optimizes the picture for watching sports, increasing the brightness of the image.\n- **Custom**: Lets the user to adjust the picture settings to their own preferences.\n\n| **Tip:** For the most consistent representation, design and test your colors for Standard picture mode.\n\nContrast\n--------\n\nContrast is one of the most important aspects of picture quality,\nespecially with modern HDR displays. It is the difference between\nthe darkest black and the brightest white that a TV can produce.\nA higher contrast ratio typically means deeper blacks, which makes\na big difference in overall picture quality.\n\n|-----------------------|----------------------------|\n| Contrast: 562:1 (Low) | Contrast: Inf: 1 (Perfect) |\n\nSame color on different TVs may look washed out on TV with a\nlow contrast ratio. To ensure a good user experience, designers\nshould consider the following tips when creating UI for TV applications:\n\n1. Use high contrast between text and background colors.\n2. Choose clear, readable fonts with larger sizes and line spacing.\n3. Incorporate accessibility features.\n4. Avoid relying solely on color to convey information.\n5. Optimize for different color spaces (SDR and HDR).\n6. Test legibility in different lighting conditions.\n\nDisplay technology\n------------------\n\nDisplay technologies can also impact the color displayed on the screen. Some\ncommon types include:\n\n- **LCD**: Liquid crystal displays are the most common type of TV display. They work by using a backlight to illuminate a liquid crystal panel, which then blocks or allows light to pass through to create an image. LCD TVs are relatively inexpensive and come in a wide range of sizes, but they can suffer from poor contrast and color reproduction.\n- **LED**: Light-emitting diode displays are a newer type of LCD TV that use LEDs as the backlight. LEDs are more energy-efficient than traditional LCDs and can produce a brighter, more vivid image. LED TVs tend to be more expensive than LCD TVs.\n- **QLED**: Quantum dot light-emitting diode displays are a type of LED display that use quantum dots to produce light. Quantum dots are tiny particles that can produce a wider range of colors than traditional LEDs.\n- **OLED**: Organic light-emitting diode displays are a type of LED display that use organic materials to produce light. OLED TVs are the most expensive type of TV, but they offer the best contrast and color reproduction of any type of TV.\n\nEach type of TV display technology has its own advantages and disadvantages\nwhen rendering color.\n| **Tip:** Consider testing your TV designs on different display technologies.\n\nTo learn more, watch\n[How a TV Works in Slow Motion](https://www.youtube.com/watch?v=3BJU2drrtCM)\nfrom The Slow Mo Guys.\n\nPrinciples\n----------\n\nFor more readings, see the\n[Material Color](https://m3.material.io/styles/color/overview) principles.\n\n- **Accessibility first**: TV interfaces have a diverse audience. From the young to the elderly to the visually impaired. Always take into account needs, and preferences when using color. Putting accessibility first in your UI can give users an efficient experience. An example of this is meeting color contrast standards. Note: Always consider color rendering variations across different TV models.\n- **Color with purpose**: When used correctly, color can enhance communication and create meaningful and immersive experiences. It reflects your product's identity across the TV interface.\n- **Choose a contrasting foundation**: A contrasting background helps users interpret and interact with your app's text and various elements. The higher contrast ensures the content is visible.\n\n| **Note:** Color choices can affect power consumption on TV. Using darker colors saves power. Avoid using white background unless necessary.\n\nScreen banding\n--------------\n\nScreen banding on a TV refers to the appearance of visible horizontal or\nvertical lines, bands, or gradients on the display that are not part of\nthe actual content being shown. This artifact can manifest as either\ndistinct lines or as a gradual transition in colors or shades across\nthe screen. Banding can be caused by factors such as low color depth,\ncompression artifacts, signal interference, or panel or GPU issues.\n\nWhen designing a user interface for TV, particularly when it comes\nto gradients and avoiding banding, consider the following tips:\n\n- **Use high-color-depth gradients**: To minimize the risk of banding, use gradients with a high color depth (e.g., 10-bit or higher). This ensures smoother transitions between colors and reduce the likelihood of visible bands.\n- **Avoid extreme color transitions**: When creating gradients, try to avoid sharp transitions between colors, as these can be more prone to banding. Instead, use more subtle, gradual color transitions that allow for a smoother appearance on the screen.\n- **Test on multiple devices**: As TVs can vary in color depth and panel quality, it's important to test your UI design on multiple devices to ensure that gradients appear smooth and banding-free across different screens.\n- **Use dithering techniques**: Dithering is a technique that can help reduce banding by blending colors together in a patterned, noise-like manner. This can help create the illusion of smoother color transitions, even on screens with lower color depth.\n- **Choose solid colors or subtle patterns**: If gradients are not essential for your design, consider using solid colors or subtle patterns instead. These are less prone to banding and can still create an aesthetically pleasing UI."]]