How to identify a text highlight color for a slide deck
Sample a slide's highlight color with a browser eyedropper, read its HEX and RGB values, and avoid common mistakes that shift the result.
You need to match a text highlight in a slide deck, but the color picker in your presentation app is hard to read or the original value is missing. You can sample the color as it appears on screen and get its HEX, RGB, and other values.
Use the Color Picker on a computer in Chrome or Edge. It can sample a color from anywhere on the screen. The result is the displayed pixel color, so a few small choices will help you avoid picking the text, an edge, or a display effect instead of the highlight itself.
Sample the highlight color
- Open the slide deck on your computer, then open the Color Picker in Chrome or Edge. The screen picker works in these browsers on a computer. Other browsers may offer a reduced version or none.
- Show the slide with the highlight at a comfortable size. If the highlight is narrow, zoom in until you can clearly see a solid area of its background color.
- Use the Color Picker's screen sampling action and select a point near the center of the highlight, away from the letters and its edges.
- Read the displayed color values. Note the HEX value if you need to enter it in a color field, or use the RGB values if your slide editor asks for red, green, and blue components.
If the deck is open in a desktop presentation program, keep it visible while you sample. If the browser asks you to choose what to share, select the display or window that contains the slide. The exact prompt can vary by browser and operating system.
What the result means
The highlight has a flat, consistent color
If several samples from the middle of the colored area return the same values, that is a good match for the color currently shown on screen. Use the HEX value to enter the color in a field that accepts HEX, or use the separate RGB values where the editor provides red, green, and blue fields.
Samples change near the letters or border
This is usually normal. Pixels along text edges blend the letter color with the background so the edge looks smooth. A border, shadow, or transparency effect can also change pixels near the edge. Sample farther inside the highlight, not on a letter or outline.
The sampled color does not match the editor's color value
The picker reads the color the screen displays, not necessarily the value stored in the slide. A display profile, night mode, HDR setting, transparency, or an effect on the text can change the visible result. If you need the original design value rather than a visual match, select the text or highlight in the presentation app and inspect its fill or text highlight settings.
How to get a more reliable sample
- Choose a solid area. Sample the broadest uninterrupted part of the highlight. Avoid letters, underlines, shadows, rounded corners, and translucent edges.
- Zoom in before sampling. A small highlight may contain only a few interior pixels. Increase the slide zoom until the middle is easy to target, then sample more than one interior point to check that the value stays the same.
- Use a supported browser on a computer. If the screen picker is missing or cannot reach the slide, try Chrome or Edge on a desktop or laptop. Mobile browsers and other desktop browsers may not provide the same screen sampling support.
- Keep the display conditions consistent. If you are matching a design rather than simply recording what you see, check that display color adjustments are not changing the appearance. In Windows 11, review Settings › System › Display › Night light. On macOS, review System Settings › Displays for Night Shift and True Tone. These features change how colors look, so compare with them in the same state you intend to use.
- Check the color in the slide editor. If the sampled shade is close but not exact, use the presentation app's color controls to inspect the assigned value. A sample from the screen is best for matching appearance; the editor's value is better for recovering the color saved in the deck.
Why the sampled value can look different elsewhere
A HEX value such as #336699 describes color components, but it does not guarantee that every screen will show the same appearance. Monitors, brightness, color profiles, and room lighting all affect what you see. Presentation apps can also apply transparency or effects that make a highlight appear different from its base color.
For a close visual match, sample the filled area on the screen where the slide will be presented, then check the result on the target display if possible. For a precise design handoff, record the value from the slide editor as well as the sampled screen color.
