Is HEX to RGB conversion formula accurate for print workflows?

Screen RGB and print CMYK use different gamuts. Treat conversions as approximate proofs; calibrate with ICC profiles for commercial print.

Can I use this formula in CSS?

Modern CSS supports color-mix(), oklch(), and lab() for many operations. For complex pipelines, compute in JavaScript and export CSS variables.

Does Color DevByte upload my colors?

No. Formula reference pages are static documentation; interactive tools run 100% client-side in your browser.

HEX to RGB conversion formula

Convert six-digit HEX colors to sRGB RGB channels using base-16 parsing.

Formula

R = parseInt(HEX[1:2], 16)
G = parseInt(HEX[3:4], 16)
B = parseInt(HEX[5:6], 16)

Variables

R, G, B: sRGB channels (0–255 or 0–1 normalized)
H, S, L: Hue (degrees), saturation and lightness (0–1) in HSL
L: Relative luminance (WCAG) or lightness in HSL/OKLCH

FAQ

Is HEX to RGB conversion formula accurate for print workflows?: Screen RGB and print CMYK use different gamuts. Treat conversions as approximate proofs; calibrate with ICC profiles for commercial print.
Can I use this formula in CSS?: Modern CSS supports color-mix(), oklch(), and lab() for many operations. For complex pipelines, compute in JavaScript and export CSS variables.
Does Color DevByte upload my colors?: No. Formula reference pages are static documentation; interactive tools run 100% client-side in your browser.

Browse color tools

Overview

Convert six-digit HEX colors to sRGB RGB channels using base-16 parsing.

Color DevByte documents this formula for developers, designers, and accessibility reviewers who need reproducible color math without sending data to a server.

Use the linked color tools to apply this formula interactively with live preview and multi-format export.

When to use this formula

Apply the hex to rgb conversion formula when building design tokens, validating WCAG contrast, or automating color pipelines in CSS, Tailwind, or design-system JSON.

For production UI, always verify results with a contrast checker or visual preview — edge cases in gamma correction and gamut mapping can shift outcomes.

Implementation notes

Browser-based tools should linearize sRGB before luminance or ΔE calculations.

Prefer OKLCH or LAB interpolation for gradients and themes to avoid grayish midpoints common in RGB blends.