All Tools

Check the contrast ratio between text and background colors and see instantly whether the pair meets WCAG AA and AAA accessibility standards.

Preview how your images and colors look to people with color vision deficiency. Test for Deuteranopia, Protanopia, Tritanopia, and Achromatopsia in your browser.

Extract dominant colors from any image instantly. Pick colors directly from photos, get HEX, RGB, and HSL values, and export palettes for your design projects.

Generate tints, shades, and tones from any base color. Build consistent color scales for design systems with adjustable steps, then export to CSS, SCSS, Tailwind, or JSON.

Add, subtract, multiply, and divide complex numbers, with results in rectangular, polar, and exponential form plus an Argand diagram.

Calculate vector operations including dot product, cross product, magnitude, unit vector, angle between vectors, and projection for 2D and 3D vectors.

Do arithmetic and bitwise operations directly on binary, octal, and hexadecimal numbers, with results shown in all four bases at once.

Pick and explore colors with a visual picker. Get values in HEX, RGB, HSL, HSV, and CMYK instantly, with an eyedropper, history, and favorites.

Build harmonious color palettes from color theory rules, or extract dominant colors from any image. Copy as CSS, SCSS, Tailwind, JSON, or PNG.

Do long division with full step-by-step work shown. Enter a dividend and divisor to see the quotient, remainder, decimal, and mixed number in the traditional layout.

Compute definite and indefinite integrals with step-by-step solutions. Supports polynomials, trigonometric, exponential, and logarithmic functions, plus integration by parts.

Count significant figures in any number, round to a chosen precision, and run arithmetic that applies the correct sig fig rules automatically.