Compare dark-mode accent shades for a landing page

You have a few accent colors for a dark landing page, but they look different once they sit beside the background. A shade that seems vivid in a color palette may disappear on the page, or feel too bright next to body text.

Compare each color in the mockup itself, not just in a separate palette. The Color Picker can sample a color from your screen and show its HEX, RGB, HSL and other values. This helps you compare the actual shades and keep track of which one you prefer.

Compare the accent shades

1. Open the Color Picker in Chrome or Edge on a computer. The full screen-picking feature works in those browsers. Other browsers may offer a reduced version or none.
2. Put the landing page mockup on screen with the candidate shades visible. If the browser asks you to choose a screen or window, select the one showing the mockup.
3. Sample a point near the center of the first accent-color area. Avoid the border, text, shadow and any gradient, because those nearby pixels may be blended with other colors.
4. Note the HEX and HSL values, along with a short label such as Option A. Repeat at the same spot on each version, then compare the values and appearance.
5. Check the shades in the places where they will actually appear, such as a button, link or highlighted panel. If the mockup includes hover or focus states, compare those too.

Keep the same page background, text, element size and position for each option. Changing several things at once makes it harder to tell whether a color or a layout change caused the difference.

What the results mean

The HSL hue stays similar but lightness changes

Hue is the basic color family, while lightness describes how light or dark the color value is. If the hues are close but one option stands out more, lightness may be the difference you notice. HSL lightness is not the same as your monitor's brightness setting.

The hue changes between options

The colors are not just lighter or darker versions of one accent. A shift toward blue, green or purple can change the mood of the page and how distinct the accent looks against nearby colors. Decide whether the different hue is intentional before choosing based only on brightness.

The sampled values differ from the palette values

You may have sampled an edge, text overlay, shadow or gradient rather than a flat fill. Zoom in on the mockup and sample the center of a solid area again. If the page uses transparency or effects, the displayed color may also be a blend of the accent and the background.

A shade looks attractive but text is hard to read

The Color Picker reports color values; it does not calculate a contrast ratio or confirm that text is accessible. Check the foreground text against the accent separately. For WCAG AA, normal text generally needs a contrast ratio of at least 4.5:1, while large text needs at least 3:1.

Make the comparison fair

1. Turn off color-changing display features. Night modes can make a shade look warmer than it is in your design. On Windows 11, check Settings › System › Display › Night light. On macOS, check System Settings › Displays › Night Shift. Turn the feature off while comparing, then review the page again under your usual settings.
2. Keep the screen conditions steady. Use the same display and brightness for every sample. Avoid comparing one shade in a bright room and another with the room lights dimmed, since the surrounding light changes how colors appear.
3. Sample the same kind of area. Take each reading from a flat, untextured part of the accent. A pixel on a curved corner or beside a letter may be a mixture of the accent and the dark background, not the base color.
4. Compare in context, not in isolation. Put each shade beside the same page background and foreground text. Check small labels and links as well as large buttons, because a color can remain noticeable in a large block but become hard to distinguish in a small detail.
5. Record the values with the option name. Write down each HEX or HSL value beside its version label. This prevents a visual favorite from being confused with a similar shade when you return to the mockup later.

What the Color Picker cannot tell you

A screen sample describes the color currently visible on your display. It does not prove that the source color in your design file has the same value, or that everyone will see it identically. Display settings, color profiles and different screens can change the appearance.

The tool also does not choose the best accent for your brand or test the page's accessibility. Use the sampled values to identify and compare your candidates, then check text contrast with a dedicated contrast checker if the page needs to meet an accessibility standard.

Choose the shade that remains distinct against the dark background and keeps its intended text easy to read at the size people will use.