How to Generate Gradients for Web Design
Create smooth CSS gradients with proper color interpolation, avoiding muddy midpoints and banding artifacts.
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CSS Gradient Generation
CSS gradients are powerful but easy to get wrong. Muddy midpoints, visible banding, and unnatural color transitions are common problems with simple two-color gradients.
Linear vs Radial vs Conic
Linear gradients transition along a straight line (top to bottom, left to right, or any angle). Radial gradients radiate from a center point outward. Conic gradients sweep around a center point like a clock hand. Each type suits different design needs: linear for backgrounds, radial for spotlight effects, conic for pie charts and loading indicators.
The Muddy Middle Problem
A gradient from blue to yellow passes through gray in the middle when interpolated in RGB space. This happens because RGB treats each channel independently โ the "shortest path" between blue (0,0,255) and yellow (255,255,0) passes through dark gray (128,128,128). Interpolating in OKLCH or HSL space produces vibrant midpoints instead.
Color Interpolation in CSS
CSS Color Level 4 supports in oklch syntax: background: linear-gradient(in oklch, blue, yellow). This produces a vibrant gradient through green and cyan rather than muddy gray. For browsers that don't support this yet, add intermediate color stops manually: linear-gradient(blue, cyan, green, yellow).
Preventing Banding
Visible color bands (stair-stepping instead of smooth transitions) occur in gradients with subtle color differences over large areas. Solutions: add a slight noise overlay (1-2% opacity), use more color stops with slight variations, or combine the gradient with a subtle texture. Dark gradients show banding more than bright ones because our eyes are more sensitive to differences in dark tones.
Gradient Tools
Browser-based gradient generators let you pick colors, adjust angles, add color stops, and copy the CSS. Some generate OKLCH-interpolated gradients automatically. Others provide preset gradient collections as starting points. Always test gradients on various screen types โ cheap monitors show banding that high-quality displays don't.
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