HEX, RGB, and HSL: How Color Values Relate

HEX, RGB, and HSL name the same sRGB color in different notations. This guide shows when each form is useful and how YallaSolve writes a two-stop linear-gradient.

Last updated: October 4, 2026

Quick answer

HEX, RGB, and HSL are three ways to write the same sRGB color. HEX packs the three channels into six hexadecimal digits after a #. RGB writes those channels as integers 0–255. HSL rewrites the same point as hue, saturation, and lightness. They are not three different colors. They are three notations. If the HEX is #0d82f3, the RGB is rgb(13, 130, 243). HSL is derived from those integers and rounded to whole degrees and percents, so it can sit a step away from a hand-tuned HSL you typed elsewhere.

The Color Generator draws each channel with crypto.getRandomValues and shows all three strings. The CSS Gradient Generator takes two hex stops and a direction and writes a linear-gradient declaration. This guide is how HEX, RGB, and HSL relate so you copy the form the stylesheet actually wants.

Read HEX, RGB, and HSL as one color

sRGB on these pages is three integers. 13 is 0d in hex. 130 is 82. 243 is f3. Concatenate them after # and you have #0d82f3. The YallaSolve HEX form is six lowercase digits. It is not a three-digit short hex and not an eight-digit hex with alpha.

HSL is a different coordinate system for the same point. Hue runs 0–360. Saturation and lightness are percents. The Color Generator converts from the integer RGB; it does not sample H, S, and L independently. Sampling those uniformly would not match uniform channel sampling. HEX and RGB stay exact integers. HSL is the derived readout.

When each notation is useful

  1. Copy HEX when a design token, a CMS color field, or a CSS custom property expects #rrggbb. That is the usual handoff. Copy HEX on the Color Generator writes that string.
  2. Read RGB when a legacy rule or a canvas fill wants rgb(r, g, b). The RGB row is there to read. This batch does not put a second copy button on that row.
  3. Read HSL when you want to talk about hue or lightness: “same hue, lighter.” Do not treat the rounded HSL as a second independent draw.

If a file already stores #0d82f3, you do not need to generate a new color. The Color Generator’s job is generation, not conversion of a hex you type. There is no HEX input on that page.

Generate a color on YallaSolve

  1. Open the Color Generator.
  2. Generate. A swatch and the three notations appear.
  3. Generate again if you want another draw. There is no history of earlier colors.
  4. Copy HEX when you have the token you want. Clear hides the swatch.

Black and white can appear. #000000 is a valid sRGB point, not a failure. Channels come from cryptographic randomness because that is an unbiased byte source. A color is not a secret. The draw is not a palette, not a contrast checker, and not a color-blind simulation.

Turn two hex stops into CSS

  1. Open the CSS Gradient Generator.
  2. Set From and To with the color controls, or use Random colors to fill both stops from Web Crypto.
  3. Choose a direction: to right, to left, to bottom, to top, 45deg, or 135deg.
  4. Write CSS. The declaration is background: linear-gradient(direction, from, to);
  5. Copy CSS writes that rule. The preview uses the same function. Clear empties the output and hides the preview. It does not reset the color inputs.

From #0d82f3 to #7c3aed, direction to right, writes background: linear-gradient(to right, #0d82f3, #7c3aed); The colors are checked as six-digit hex before they become a style, so a broken string cannot execute as CSS. This is a two-stop linear gradient only. There is no radial gradient, no midpoint, and no extra stop.

What these pages will not do

They will not manage a brand library, compute contrast, or emit P3, CMYK, or LAB. They will not invent a class name around the declaration. Paste the rule onto a selector you already have. If the pair from Random colors is low contrast, generate again or pick the stops by hand. Contrast is a reading question, not a syntax question.

Write the notation you will paste: “#0d82f3,” “rgb(13, 130, 243),” or the gradient declaration. HEX, RGB, and HSL is finished when the string and the property match. A screenshot of a swatch is not a value.

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