RGB to HEX Converter
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Color Converter
Convert colors between RGB, HEX, RGBA, HSL, and CMYK with live validation.
Converted Values
CSS Snippets
What is an RGB to HEX Converter?
An RGB to HEX converter is a tool that translates color values between RGB (Red, Green, Blue) and HEX (hexadecimal) formats, as well as RGBA, HSL, and CMYK. In web development and graphic design, colors are expressed in multiple formats — HEX codes like #1A73E8 and RGB values like rgb(26, 115, 232) are the most common.
This tool provides a live color preview with luminance and contrast ratio analysis. It suggests whether white or black text offers better readability on your chosen color and generates ready-to-use CSS snippets across all supported color formats. The color palette section shows complementary shades to help you build cohesive color schemes.
How to Use This Color Converter
Using this RGB to HEX converter is simple and interactive. Follow these steps:
- Adjust RGB values — Use the number inputs or sliders to set Red, Green, and Blue values (0–255 each). The color preview updates instantly.
- Set opacity — Adjust the Alpha/Opacity slider (0.00–1.00) to control transparency if you need RGBA values.
- Type a HEX or CSS color — Enter a HEX code (e.g.,
#ff5500) or a CSS color string (e.g.,hsl(200, 50%, 50%)) and all other fields update automatically. - Copy converted values — Use the copy buttons next to each converted value in the Converted Values card to grab the format you need.
- Copy CSS snippets — The CSS Snippets card provides ready-to-use
background-colorandcolordeclarations for your chosen color. - Explore palette swatches — Below the color preview, complementary shades are displayed for quick color scheme exploration.
Example Use Cases
Here are common situations where a color converter is essential:
- Web development — Convert design mockup colors (RGB/HEX) into CSS declarations with proper format for your stylesheets.
- UI/UX design — Quickly switch between color formats when working with design tools like Figma, Sketch, or Adobe XD that use different default formats.
- Accessibility testing — Check luminance and contrast ratios to ensure your color choices meet WCAG accessibility guidelines for text readability.
- Brand consistency — Verify that brand colors are accurately represented across CSS, SVG, canvas, and email templates that may require different color formats.
- Rapid prototyping — Use the Random button to discover new color combinations and instantly see their converted values and CSS snippets.
Frequently Asked Questions
What is the difference between RGB and HEX?
RGB (Red, Green, Blue) represents each color channel as a decimal number from 0 to 255, written as rgb(26, 115, 232). HEX uses a six-digit hexadecimal (base-16) notation like #1A73E8 where each pair of digits represents one color channel (00–FF). Both represent the same sRGB color space and are interchangeable.
What is RGBA and how is it different from RGB?
RGBA extends RGB with an Alpha channel that controls opacity, written as rgba(26, 115, 232, 0.8). The alpha value ranges from 0.0 (fully transparent) to 1.0 (fully opaque). Use RGBA when you need a semi-transparent color, such as for overlays, shadows, or glass-morphism effects.
What is HSL and CMYK?
HSL (Hue, Saturation, Lightness) is a cylindrical color model that is more intuitive for humans to adjust — you pick a hue angle (0–360), then adjust saturation and lightness percentages. CMYK (Cyan, Magenta, Yellow, Key/Black) is a subtractive color model used for print. This converter shows HSL for screen design and CMYK as a reference for print production.
How is contrast ratio calculated?
The contrast ratio is calculated using relative luminance values from the sRGB color space, following the WCAG 2.1 specification. A ratio of 4.5:1 is the minimum for normal text (AA compliance), and 3:1 is the minimum for large text. The tool compares your color against white (#FFFFFF) and black (#000000) to recommend the best text color.
Can I convert a color without using the sliders?
Yes. Type any valid color value directly into the HEX input (e.g., #ff5500), the CSS input (e.g., hsl(200, 50%, 50%) or rgb(100, 200, 50)), or type numbers directly in the R, G, B, and Alpha fields. All formats update in real time as you type.
