Color Converter — HEX, RGB, HSL & More | GadgetSurge

About Color Converter

Web and graphic designers work with colour in multiple formats depending on the context: HEX codes in CSS and HTML, RGB values in design tools and some CSS properties, HSL for programmatic colour manipulation, and HSV for some design applications. Converting between them manually is error-prone and slow.

This free colour converter instantly shows the equivalent of any colour in HEX, RGB, HSL, and HSV formats simultaneously. Enter a value in any format and all the others update immediately.

HEX is the most common format in web development — a 6-character code like #FF6600 representing red, green, and blue as hexadecimal pairs. RGB uses decimal values from 0-255 for each channel. HSL (Hue, Saturation, Lightness) is more intuitive for creating colour variations — adjusting the lightness value makes a colour lighter or darker without changing the hue.

How to Use Color Converter

1. Enter a color value in any supported format: HEX (#ff6600), RGB (255, 102, 0), or HSL (24, 100%, 50%).
2. The tool instantly converts and displays the equivalent in all other formats.
3. Click the color swatch to use a visual color picker.
4. Copy any format using the Copy button next to each value.

Common Use Cases

• CSS colour values: Convert design tool RGB or HSL colours to HEX for use in CSS stylesheets and Tailwind configuration files.
• Design system consistency: Verify that colours in different formats across design files and code are actually the same colour value.
• Creating colour variations: Use HSL conversion to create lighter and darker variants of a brand colour by adjusting the lightness value.
• Accessibility contrast checking: Convert colours to RGB to calculate luminance values for WCAG accessibility contrast ratio calculations.
• Brand colour documentation: Document brand colours in all formats so developers and designers can use whichever format their tool requires.

Frequently Asked Questions

What is the difference between HEX, RGB, and HSL?

HEX represents colours as a 6-digit hexadecimal number (#RRGGBB), where each pair controls red, green, and blue intensity. RGB uses decimal numbers 0-255 for the same three channels. HSL represents colour as Hue (0-360°, the colour wheel position), Saturation (0-100%, colour intensity), and Lightness (0-100%, from black to white). All three describe the same colour space — just in different formats.

What is HSL and why is it useful?

HSL (Hue, Saturation, Lightness) is designed to be more intuitive than RGB. To create a lighter version of a colour, increase the Lightness value. To create a less saturated (greyer) version, decrease Saturation. To rotate to a related hue, adjust the Hue value. This makes HSL much easier to work with programmatically for generating colour palettes.

What does the alpha/opacity channel do?

The alpha channel controls transparency. In CSS, rgba(255, 0, 0, 0.5) is a red that is 50% transparent. HEX supports an 8-digit format (#RRGGBBAA) for alpha. HSL has the HSLA variant. An alpha of 1.0 is fully opaque; 0.0 is fully transparent.