Color Tools

Free Online Color Tools

Tooloogle's color category brings together every utility a designer, developer, marketer, or accessibility specialist needs to work with color. Pick a shade from an image, build a balanced palette, check contrast against WCAG guidelines, convert between HEX/RGB/HSL/OKLCH formats, and generate beautiful gradients — all in your browser, with no software installation.

The Color Toolkit

Color Picker

Pick any color from a visual canvas, an uploaded image, or a screenshot. Get instant HEX, RGB, RGBA, HSL, HSLA, and OKLCH values, plus the closest named CSS color. Useful for matching brand assets, sampling colors from inspiration, and verifying screenshots.

Palette Generator

Generate harmonious color palettes from a single base color: complementary, analogous, triadic, tetradic, monochromatic, and split-complementary schemes. Adjust saturation, lightness, and warmth to fine-tune the mood. Export palettes as CSS variables, Tailwind config, Sass partials, JSON, ASE (Adobe Swatch Exchange), or PNG swatches.

Contrast Checker (WCAG)

Check foreground/background color combinations against WCAG 2.1 and WCAG 3 (APCA) contrast standards. Get clear pass/fail ratings for AA and AAA at normal and large text sizes. Critical for accessible web design, government compliance, and inclusive product development.

Color Format Converter

Convert between HEX, RGB, RGBA, HSL, HSLA, HSV, CMYK, OKLCH, OKLAB, P3 wide-gamut, and named CSS colors. Round-trip safely with explicit precision controls. Designers and developers no longer need to memorise conversion formulas.

Gradient Generator

Build linear, radial, and conic gradients with multiple color stops. Preview live, copy CSS-ready code, and export as PNG or SVG. Includes preset libraries (sunset, ocean, neon, pastel, brand-inspired) so you can prototype designs in seconds.

Image Color Extractor

Upload a photo and extract the dominant color palette automatically. Specify how many colors to extract (3-12) and which algorithm (k-means, median cut, octree). Perfect for building branded designs around photography or matching UI to product imagery.

Tailwind & Bootstrap Color Mapper

Convert any custom color to the closest Tailwind utility class or Bootstrap variable. Speeds up implementation when designs use arbitrary colors but the codebase prefers framework primitives.

Color Blindness Simulator

Preview how your designs look to users with deuteranopia, protanopia, tritanopia, and achromatopsia. Combine with the contrast checker to ensure your interface is readable for all users.

Why Browser-Based Color Tools?

Native design tools are powerful but heavy. For quick, focused tasks — picking one color, checking one contrast ratio, building one palette — opening Photoshop or Figma is overkill. Browser tools load instantly, do exactly one job, and let you copy the result and get back to work. Tooloogle's color tools are designed for these in-flow moments.

Modern Color Spaces

The web is moving beyond sRGB. We support OKLCH and OKLAB (the new perceptually uniform color spaces used in CSS Color 4), wide-gamut P3 for newer displays, and HDR-aware previews. Stay ahead of design trends without rewriting your color knowledge.

Accessibility First

Every palette generator and contrast checker includes accessibility metrics by default. We don't make accessibility an afterthought or a premium feature — it's built into the core experience.

Who Uses Color Tools?

UI/UX designers crafting design systems. Front-end developers translating mockups to CSS. Brand designers building visual identities. Marketers picking ad colors. Accessibility consultants auditing client sites. Photographers extracting palettes from their work. Bloggers and content creators matching brand colors across channels. Educators teaching color theory.

Long-Form Color Guides

This category also hosts in-depth articles: introduction to OKLCH and why it's better than HSL, designing color systems that scale across light and dark modes, picking accessible color combinations for data visualisation, the psychology of color in marketing, and how to build a brand palette that survives evolving design trends.

Best Practices

Always check contrast against WCAG AA at minimum (4.5:1 for normal text, 3:1 for large text). Don't rely on color alone to convey information — pair with icons, labels, or patterns. When generating palettes, lock your brand color first and let the algorithm vary the rest. Test palettes against real content (typography, photos, charts), not just swatches. Save your palette in a shareable format (JSON or ASE) so it's available across tools and team members.