About Eurika ColorStudio
Eurika ColorStudio is an all-in-one browser utility designed for developers, designers, and creatives. Instead of jumping between multiple tabs to extract colors, build gradients, and convert formats, we've unified the workflow into a single, high-performance toolkit.
What is a color palette?
A color palette is a curated set of colors chosen to work harmoniously together. Designers rely on palettes to keep branding, user interfaces, and illustrations visually consistent. Most follow an established relationship on the color wheel: monochromatic palettes use a single hue at different lightness levels, analogous palettes combine neighboring hues, and complementary palettes pair opposites for maximum contrast. Triadic and tetradic schemes use three or four evenly spaced hues for richer, more balanced combinations.
How to use the Image Palette Extractor
- Add your image: Drag and drop a picture onto the upload area, or click to browse and select a file from your device.
- Colors are analyzed locally: The extractor reads the image's dominant colors directly in your browser using the HTML5 Canvas API — your file is never uploaded.
- Copy any swatch: Click a color to copy its value as HEX, RGB, or HSL, ready to drop straight into your code or design tool.
- Send colors to the Gradient Builder: Optionally paste an extracted color into the Gradient Builder to turn your palette into a ready-to-use CSS gradient.
What is a CSS gradient?
A CSS gradient is a programmatic transition between two or more colors, rendered by the browser with no image file required. The two most common functions are linear-gradient(), which blends colors along a straight line, and radial-gradient(), which radiates outward from a center point. You shape the result with an angle or direction keyword (such as "to right" or "135deg") and a series of color stops that mark where each color begins and ends. Because the output is plain CSS, you can copy it from the Gradient Builder and paste it directly into your stylesheet for production-ready backgrounds, buttons, and overlays.
HEX, RGB, and HSL explained
ColorStudio shows every color in three standard formats so you can use whichever fits the job:
- HEX — a six-character base-16 notation (for example #6366f1). It's the most concise format and the natural choice for CSS variables and design handoffs.
- RGB — describes a color through its Red, Green, and Blue channels, each from 0 to 255, which makes it ideal for programmatic manipulation and canvas work.
- HSL — expresses color as Hue (0–360°), Saturation (0–100%), and Lightness (0–100%), the most human-readable format when you need to nudge a shade lighter, darker, or more muted.
Tips for accessible color contrast
Accessible color choices keep your content readable for everyone. The WCAG guidelines recommend a contrast ratio of at least 4.5:1 between text and its background for normal body text, and 3:1 for large text (roughly 18px bold or 24px regular and up). When pairing a foreground and background color, confirm they clear these thresholds — the ColorStudio picker lets you sample and compare exact values, so you can test combinations manually before committing them to a design.
Zero Data Collection & Privacy
Like all tools in the Eurika suite, ColorStudio processes everything locally on your device. We do not store your images, palettes, or track your usage. Please note that this site is supported by ads served by Google AdSense, which may use cookies to personalize content and ads per their own policies.