Build a palette for your project, tune each color, and see which one pops.
Drag a caliper arm to steer the palette. Each color below has Cool–Warm and Shade–Tint sliders (double-click a slider to reset). Click a swatch to choose your pop candidate, then press Pop.
The other colors swirl together below. Move your mouse to place the pop color; scroll the mouse wheel over the swirl to grow or shrink it. Click once to pin it in place (a dashed ring appears) so it stays put while you reach for the sliders; click again to release it. Adjust any slider above — the swirl and the pop color update live.
The wheel. Drag any caliper arm to steer your palette around the color wheel. In Evenly spaced, Split complement, and Analogous the arms move as one locked set, so the whole palette turns together; in Free each arm moves on its own. Use the + and − buttons to set how many colors your project needs, from 2 to 5. The small pointers on the rim show where each color actually lands after tuning.
Tuning. Every swatch has two sliders. Cool–Warm nudges the color toward blue or orange light; Shade–Tint darkens or lightens it. Double-click a slider to snap it back to center, and click a hex code to copy it for your paints, files, or printer. Tick “View in black & white” to strip the hue away and judge pure value — a palette that still reads in grayscale will hold together in any medium.
The pop test. Click a swatch to select it, then press ✦ Pop. The rest of the palette swirls together, and your chosen color floats above it as a single spot: move the mouse to place it anywhere over the swirl, and scroll the mouse wheel to grow or shrink it. When it sits where you want it, click once to pin it — a dashed ring marks it as pinned, and it will stay put while you move the mouse away to work the sliders. Click the swirl again to unpin and move it. Keep adjusting any slider while you look — the swirl and the spot update live. If the spot stays visible against the swirl at every size and position, it pops; if it sinks in, warm it, cool it, or shift its value and try again.