How this works in your browser
HEX and RGB are two notations for the same thing, three channel values from 0 to 255, so converting between them is just a change of base with no information lost. HSL is a genuine transformation: hue is derived from which channel dominates and by how much, lightness from the midpoint of the largest and smallest channels, and saturation from their spread relative to that midpoint. That reorganisation is what makes HSL editable by hand, since adjusting lightness or saturation is a single number rather than a coordinated change across three. Rounding to integers means a round trip through HSL can shift a value imperceptibly. Everything runs locally.
Color Converter vs. typical online calculators
| Feature | Color Converter (in-browser) | Typical online calculators |
|---|---|---|
| Where the maths runs | In your browser, on your device | Often posted to a server to compute |
| Your inputs are stored | Never - nothing is sent or saved | Frequently logged with your session |
| Works offline once loaded | Yes | No - needs a live connection |
| Ads inside the result area | None | Common on free calculators |
| Account required | No | Often, to save or export results |
| Usage limits | None - free, unlimited use | Sometimes capped per day |
Who uses Color Converter
Matching a brand colour
Convert a supplied value into whatever format your tool expects.
Building hover and active states
Switch to HSL to derive variations by adjusting lightness.
Reading a colour from a design file
Translate between the formats design tools and CSS each prefer.
Documenting a palette
Record the same colour in every format for a style guide.
How to use Color Converter
- 1
Open the Colour Converter
Go to tools.slaytic.com and open the Color Converter. No sign-up or account required.
- 2
Pick or type a colour
Use the visual picker, or enter a value in HEX, RGB or HSL.
- 3
Read the other formats
All three update together with a live preview.
- 4
Copy what you need
Take the format your tool or stylesheet expects.
Frequently asked questions
Which color formats are supported?
HEX, RGB (red, green, blue 0-255), and HSL (hue, saturation, lightness).
Can I pick a color visually instead of typing values?
Yes - a native color picker is included, and choosing a color there updates all three text formats automatically.
Does it support transparency/alpha values?
This version converts opaque colors only.
Why would I use HSL instead of HEX?
Because HSL is editable by hand and HEX is not. Building a hover state from HSL means lowering the lightness by a few percent; doing the same from HEX means guessing at six characters. For generating tints, shades and consistent variations of a brand colour, HSL is far more tractable.
Do the formats represent exactly the same colours?
HEX and RGB are the same information written differently, so conversion between them is exact. HSL is a different geometric arrangement of the same space, so converting to HSL and back can shift a value by a unit through rounding. Not visible, but worth knowing if you are comparing strings.
Why does a colour look different in print?
Because screens emit light and produce colour additively while print absorbs it subtractively. Vivid screen colours, especially bright blues and greens, often fall outside what ink can reproduce. Print work needs a CMYK conversion with the printer's profile rather than a direct translation.
Is the colour I pick sent anywhere?
No. The conversion runs in your browser, so unreleased brand colours stay on your device.