The RGBA color space extends the classic RGB system with a fourth value — the alpha channel. This defines the transparency (opacity) of a color and allows colors to be layered semi-transparently over others, creating depth, dynamics, and a modern, fluid look in digital design.
RGBA stands for Red, Green, Blue, and Alpha (Transparency). The three color values range from 0 to 255, while the alpha value is a decimal between 0 and 1 (e.g., 0 = fully transparent, 1 = opaque). This makes theoretically infinite RGBA colors possible.
Example: rgba(255, 0, 0, 0.5) defines a semi-transparent red with 50% opacity — ideal for shadows, overlays, or subtle highlights in UI design.
The RGBA color system is a key component of modern web and app design. It is used to create layers, backgrounds, or text overlays with transparent effects, allowing designers to achieve smooth transitions, soft shadows, or responsive hover effects without additional graphics.
In CSS, SVG, or Canvas graphics, RGBA enables precise control over color intensity and transparency. Especially in combination with CSS variables, dark mode themes, and animated gradients, RGBA is indispensable.
Transparent colors on the web are calculated through the alpha channel: the visible color results from mixing the RGBA value with the background layer — a process called alpha blending or compositing. The lower the alpha value, the more the background shows through.
RGBA is fully compatible with modern web standards like CSS3, HTML5 Canvas, and contemporary graphics APIs. Unlike static hex colors (#FF0000), RGBA values can be dynamically calculated, animated, or used in JavaScript functions.
Note: When converting RGBA to CMYK, transparency information is lost because print colors do not contain opacity parameters. In print, transparency is simulated using layer masks or spot coatings.
Colors are displayed differently on each device. Please note that the colors do not always match 100%. Differences can occur when real colors are processed. We recommend a comparison of the real colors. We do not assume any liability.
All 16 million colors are not displayed here. The listing is in steps of 10.
Provide designers and agencies with accurate color values.
RGB to HEX
convert from RGB red green blue to #RRGGBB
RGB to CMYK
convert from RGB red green blue to CMYK cyan / magenta / yellow / black
RGB to RAL®
convert from RGB red green blue to RAL®-number (RAL 0000)
RGB to HKS®
convert from RGB red green blue to HKS®-number (HKS 00)
RGB to PANTONE®
convert from RGB red green blue to Pantone®-number (Pantone 0000)
RGB to Sherwin Williams®
convert from RGB red green blue to Sherwin Williams®-number (SW 0000)
RGB to NCS®
convert from RGB red green blue to NCS-number (S0000-X00X)
RGBA to HEX
convert from RGBA red green blue transparency to #RRGGBB
RGBA to CMYK
convert from RGBA red green blue transparency to CMYK cyan / magenta / yellow / black
RGBA to RAL®
convert from RGBA red green blue transparency to RAL®-number (RAL 0000)
RGBA to HKS®
convert from RGBA red green blue transparency to HKS®-number (HKS 00)
RGBA to PANTONE®
convert from RGBA red green blue transparency to Pantone®-number (Pantone 0000)
RGBA to Sherwin Williams®
convert from RGBA red green blue transparency to Sherwin Williams®-number (SW 0000)
RGBA to NCS®
convert from RGBA red green blue transparency to NCS-number (S0000-X00X)
CMYK to HEX
convert from CMYK cyan / magenta / yellow / black to #RRGGBB
CMYK to RGB
convert from CMYK cyan / magenta / yellow / black to RGB red green blue
CMYK to RGBA
convert from CMYK cyan / magenta / yellow / black to RGBA red green blue transparency
CMYK to RAL®
convert from CMYK cyan / magenta / yellow / black to RAL®-number (RAL 0000)
CMYK to HKS®
convert from CMYK cyan / magenta / yellow / black to HKS®-number (HKS 00)
CMYK to PANTONE®
convert from CMYK cyan / magenta / yellow / black to Pantone®-number (Pantone 0000)
CMYK to Sherwin Williams®
convert from CMYK cyan / magenta / yellow / black to Sherwin Williams®-number (SW 0000)
CMYK to NCS®
convert from CMYK cyan / magenta / yellow / black to NCS-number (S0000-X00X)
HEX to RGB
convert from #RRGGBB to RGB red green blue
HEX to RGBA
convert from #RRGGBB to RGBA red green blue transparency
HEX to CMYK
convert from #RRGGBB to CMYK cyan / magenta / yellow / black
HEX to RAL®
convert from #RRGGBB to RAL®-number (RAL 0000)
HEX to HKS®
convert from #RRGGBB to HKS®-number (HKS 00)
HEX to PANTONE®
convert from #RRGGBB to Pantone®-number (Pantone 0000)
HEX to Sherwin Williams®
convert from #RRGGBB to Sherwin Williams®-number (SW 0000)
HEX to NCS®
convert from #RRGGBB to NCS-number (S0000-X00X)
RAL® to RGB
convert from RAL®-number (RAL 0000) to RGB red green blue
RAL® to RGBA
convert from RAL®-number (RAL 0000) to RGBA red green blue transparency
RAL® to CMYK
convert from RAL®-number (RAL 0000) to CMYK cyan / magenta / yellow / black
RAL® to HEX
convert from RAL®-number (RAL 0000) to #RRGGBB
RAL® to HKS®
convert from RAL®-number (RAL 0000) to HKS®-number (HKS 00)
RAL® to PANTONE®
convert from RAL®-number (RAL 0000) to Pantone®-number (Pantone 0000)
RAL® to Sherwin Williams®
convert from RAL®-number (RAL 0000) to Sherwin Williams®-number (SW 0000)
RAL® to NCS®
convert from RAL®-number (RAL 0000) to NCS-number (S0000-X00X)
HKS® to RGB
convert from HKS®-number (HKS 00) to RGB red green blue
HKS® to RGBA
convert from HKS®-number (HKS 00) to RGBA red green blue transparency
HKS® to CMYK
convert from HKS®-number (HKS 00) to CMYK cyan / magenta / yellow / black
HKS® to HEX
convert from HKS®-number (HKS 00) to #RRGGBB
HKS® to RAL®
convert from HKS®-number (HKS 00) to RAL®-number (RAL 0000)
HKS® to PANTONE®
convert from HKS®-number (HKS 00) to Pantone®-number (Pantone 0000)
HKS® to Sherwin Williams®
convert from HKS®-number (HKS 00) to Sherwin Williams®-number (SW 0000)
HKS® to NCS®
convert from HKS®-number (HKS 00) to NCS-number (S0000-X00X)
PANTONE® to RGB
convert from Pantone®-number (Pantone 0000) to RGB red green blue
PANTONE® to RGBA
convert from Pantone®-number (Pantone 0000) to RGBA red green blue transparency
PANTONE® to CMYK
convert from Pantone®-number (Pantone 0000) to CMYK cyan / magenta / yellow / black
PANTONE® to HEX
convert from Pantone®-number (Pantone 0000) to #RRGGBB
PANTONE® to RAL®
convert from Pantone®-number (Pantone 0000) to RAL®-number (RAL 0000)
PANTONE® to HKS®
convert from Pantone®-number (Pantone 0000) to HKS®-number (HKS 00)
PANTONE® to Sherwin Williams®
convert from Pantone®-number (Pantone 0000) to Sherwin Williams®-number (SW 0000)
PANTONE® to NCS®
convert from Pantone®-number (Pantone 0000) to NCS-number (S0000-X00X)
Sherwin Williams® to RGB
convert from Sherwin Williams®-number (SW 0000) to RGB red green blue
Sherwin Williams® to RGBA
convert from Sherwin Williams®-number (SW 0000) to RGBA red green blue transparency
Sherwin Williams® to CMYK
convert from Sherwin Williams®-number (SW 0000) to CMYK cyan / magenta / yellow / black
Sherwin Williams® to HEX
convert from Sherwin Williams®-number (SW 0000) to #RRGGBB
Sherwin Williams® to RAL®
convert from Sherwin Williams®-number (SW 0000) to RAL®-number (RAL 0000)