Online Color Picker: Convert HEX, RGB, HSL, and HSV Color Codes

Understanding Color Formats in Web Design

Web and UI design uses several color formats, each with different use cases. Understanding when to use each format will improve your workflow.

Color Format Reference

Format	Example	Best For
HEX	#1a73e8	Web CSS, most common format
RGB	rgb(26, 115, 232)	CSS, programmatic color mixing
RGBA	rgba(26, 115, 232, 0.5)	CSS with transparency
HSL	hsl(216, 80%, 51%)	CSS, human-readable, easy to create palettes
HSLA	hsla(216, 80%, 51%, 0.5)	CSS with transparency
HSV/HSB	hsv(216°, 89%, 91%)	Design tools (Photoshop, Figma)
CMYK	cmyk(89%, 50%, 0%, 9%)	Print design

Why HSL Is Better for Web Development

HSL (Hue, Saturation, Lightness) is the most intuitive format for creating color variations. To lighten a color, just increase the lightness value. To desaturate, decrease saturation. This makes it easy to generate consistent color palettes programmatically.

/* Base blue */
--color-primary: hsl(216, 80%, 51%);

/* Automatic variants */
--color-primary-light: hsl(216, 80%, 65%);
--color-primary-dark: hsl(216, 80%, 38%);
--color-primary-muted: hsl(216, 30%, 51%);

How to Use FavorTool Color Picker

1. Visit FavorTool Color Picker.
2. Click anywhere on the color spectrum or enter a color value.
3. All formats update simultaneously: HEX, RGB, HSL, HSV.
4. Use the eyedropper tool to pick a color from your screen.
5. Copy any format value with one click.

Color Accessibility: Contrast Ratio

WCAG (Web Content Accessibility Guidelines) requires a minimum contrast ratio for readable text:

• 4.5:1 — Normal text (WCAG AA)
• 3:1 — Large text, 18px+ (WCAG AA)
• 7:1 — Normal text (WCAG AAA, enhanced)

Always check that your text color has sufficient contrast against its background to ensure readability for users with visual impairments.