HEX → RAL
Instantly convert any HEX color code to its closest RAL match. Complete database of 1,355 RAL shades — 221 Classic and 1,134 RAL Design System+ — matched with the perceptual Delta E algorithm.
① Enter a HEX code or pick a color ② Find the closest RAL match ③ Copy the RAL code or explore nearby colors
RAL Classic is the European standard color-matching system, widely used in construction, industrial design, coating and architecture. Each color has a 4-digit code (e.g. RAL 3020) that uniquely identifies a precise, reproducible shade.
Your HEX is converted into the CIE Lab color space, which models human visual perception. The distance between your color and each RAL is computed with the ΔE (Delta E) formula: the lower the value, the closer the colors look.
ΔE measures how perceptually different two colors are. A value of 0 means identical colors; above 5 the difference becomes clearly visible.
What is this tool?
The HEX → RAL converter is a free tool that finds the closest RAL code for any digital color in hexadecimal format. Useful for designers, architects, painters and anyone matching web colors with physical paint shades.
The database includes the complete RAL Classic (221 colors, series 1000 to 9023) and the RAL Design System+ (1,134 colors organized by hue, lightness and chroma). All names are available in six languages.
Matching uses the Delta E (ΔE) algorithm in CIE Lab color space — unlike a simple RGB comparison, ΔE measures the perceptual distance between colors as seen by the human eye.
Common use cases include: finding the RAL paint code for a brand color from company guidelines, selecting a RAL shade for architectural facades and interior finishes, specifying RAL colors for industrial signage and equipment, and matching digital colors to physical materials such as powder coatings, plastics and laminates.
Frequently asked questions
A RAL color code is a European standard for color classification, established in Germany in 1927. Each color is identified by a unique number — for example RAL 3020 Traffic Red or RAL 9010 Pure White — which guarantees exact reproducibility across any material: paints, plastics, textiles and industrial coatings. It is the reference standard in construction, architecture, product design and signage.
HEX → RAL conversion happens in three steps: first the hexadecimal code is transformed into RGB values, then converted into the CIE Lab color space which replicates human visual perception, and finally the ΔE (Delta E) distance is calculated between the input color and each of the 1,355 RAL colors in the database. The RAL code with the lowest ΔE is the closest match. A perfect match is not always guaranteed, because HEX describes colors emitted by a screen, while RAL describes physical pigments.
RAL Classic includes 215 colors with 4-digit codes (e.g. RAL 1003, RAL 5015) and is the most widely used system in industrial and architectural contexts. RAL Design System+ is the more recent scientific system, with 1,134 colors organized along three axes: Hue, Lightness and Chroma, with codes like RAL D2 010 40 30. This tool queries both databases to always return the most accurate result.
Delta E (ΔE) is the standard measure of perceptual difference between two colors in CIE Lab space. A ΔE below 1 is imperceptible to the human eye. Between 1 and 3 the difference is barely noticeable. Between 3 and 6 it becomes visible on close inspection. Above 6 the difference is obvious. Above 12 the colors are clearly distinct. Color professionals in print and coating industries consider a ΔE below 3 acceptable.
No, and this is an important distinction. HEX colors are emitted by a screen (additive RGB light), while RAL colors are physical pigments that reflect light (subtractive colors). The same HEX can look different on differently calibrated screens, and the physical RAL shade can vary slightly between manufacturers and batches. The ΔE indicates how close the match is: a low value guarantees the best possible fidelity, but for critical applications like industrial coatings or interior design, always verify with physical RAL color samples.
Yes. Enter the HEX code of the brand color from your company guidelines and the converter returns the closest RAL code, useful for ordering paints, coatings or materials from industrial printers and suppliers. For brands with critical color accuracy requirements (automotive, furniture, signage), always verify the result with a physical RAL color fan before proceeding with production.
The database includes 1,355 RAL colors in total: 221 RAL Classic colors (series 1000–9023) plus 1,134 RAL Design System+ colors. All color names are available in Italian, English, German, Spanish, French and Portuguese. The search uses the Delta E algorithm in CIE Lab space to guarantee the most perceptually accurate match.