Convertidor de Unidades y Colores CSS

Entendiendo los colores y unidades CSS

Formatos de color HEX, RGB y HSL

CSS admite varios formatos de color, cada uno con ventajas únicas. <strong>Los colores HEX</strong> usan una notación hexadecimal de seis caracteres (ej. <code>#22c55e</code>) y son el formato más común en diseño web por su brevedad.

<strong>RGB (Rojo, Verde, Azul)</strong> usa valores decimales de 0 a 255 para cada canal. El formato <code>rgb(34, 197, 94)</code> es más legible y permite manipular canales individuales fácilmente.

<strong>HSL (Tono, Saturación, Luminosidad)</strong> es el más intuitivo para diseñadores. El tono es un grado en la rueda de colores (0–360), mientras que la saturación y luminosidad son porcentajes.

CSS Named Colors

CSS provides 147 named colors like coral, steelblue, and rebeccapurple. While convenient for prototyping, named colors offer limited precision. Converting a CSS color name to HEX or RGB gives you exact values you can fine-tune for production use.

CMYK para diseño de impresión

<strong>CMYK</strong> es el modelo de color estándar para impresión. Convertir colores web de HEX o RGB a CMYK ayuda a preparar activos para producción impresa.

HSV en herramientas de diseño

<strong>HSV</strong> es el modelo de color nativo en herramientas como Photoshop, Figma y Sketch.

OKLCH — CSS Color Level 4

OKLCH (Lightness, Chroma, Hue) is the modern perceptually uniform color space introduced in CSS Color Level 4. Unlike HSL, OKLCH ensures that colors with the same lightness value actually appear equally bright to the human eye. It's supported in all modern browsers and is becoming the preferred format for design systems that need consistent, predictable color palettes.

LCH — CIE LCH Color Space

LCH (Lightness, Chroma, Hue) is the cylindrical representation of the CIELAB color space. It provides perceptually uniform color differences, meaning equal numerical changes produce visually equal differences. LCH is supported in CSS Color Level 4 via the lch() function and is widely used in color science, print workflows, and advanced design systems.

LAB — CIELAB Color Space

CIELAB (L*a*b*) is a device-independent color space that models human vision. L represents lightness (0–100), while a and b represent color-opponent dimensions (green–red and blue–yellow). LAB is the foundation for Delta E color difference calculations and is essential for color matching, print proofing, and scientific color analysis.

HWB — Hue Whiteness Blackness

HWB (Hue, Whiteness, Blackness) is a CSS Color Level 4 format designed to be more intuitive than HSL. You start with a hue, then add whiteness to lighten and blackness to darken. It's supported via the hwb() function in modern browsers and is particularly useful for creating tints and shades without complex math.

Tailwind CSS Colors

Tailwind CSS ships with a comprehensive color palette organized by name and shade (e.g., blue-500, rose-400). Converting Tailwind color classes to HEX codes is essential when integrating Tailwind designs with external tools, creating custom themes, or working with design tools that require hex values.

PX vs REM: Unidades CSS explicadas

<strong>Los píxeles (PX)</strong> son unidades absolutas. <strong>REM</strong> son relativas al tamaño de fuente del elemento raíz (típicamente 16px). Usar REM asegura que tus diseños escalen proporcionalmente.

La conversión es sencilla: divide los píxeles por 16 para obtener valores REM. Por ejemplo, 24px es igual a 1.5rem.

<strong>Las unidades EM</strong> son relativas al tamaño de fuente del elemento padre, a diferencia de REM que referencia la raíz.

• 1rem = 16px (default browser setting)
• 1em = parent font-size (context-dependent)
• 0.75rem = 12px — common for small/caption text
• 1.25rem = 20px — common for subheadings
• 2rem = 32px — common for section headings

¿Por qué usar convertidores CSS?

Convertir manualmente entre formatos de color es tedioso y propenso a errores. Las herramientas de conversión automática ahorran tiempo y eliminan errores.

• Instant results — paste a value and get the converted output immediately, no formulas needed.
• Copy-ready output — every result includes a one-click copy button with properly formatted CSS syntax.
• Color preview — see a live swatch of the converted color to visually confirm accuracy.
• No installation — works in any browser, on any device. No extensions, downloads, or signups.
• Developer-friendly — shareable URLs with pre-filled values for easy team collaboration.

Common CSS Conversion Workflows

• Design handoff: Figma and Sketch export colors as HEX. Convert to RGB or HSL if your codebase uses those formats.
• Dark mode generation: Take your light-mode HSL palette, adjust lightness values, and convert back to HEX.
• Accessibility checks: Convert colors to RGB to calculate contrast ratios using the WCAG luminance formula.
• Legacy migration: Convert pixel-based layouts to rem-based responsive systems during refactors.
• Cross-browser debugging: Quickly convert colors to match your source code format.

Supported Conversions