Colour Mixer
Mix two colours and see every step between them.
- Free
- No signup
- Nothing uploaded
- No watermark
Every step between them
Worked out in your browser. Nothing you enter or open is uploaded.
How to Use the Colour Mixer Online
Mixes two colours and shows every step between them. Worth knowing that mixing in RGB is not how paint behaves — blue and yellow give grey rather than green, because screen colour is additive light and paint is subtractive pigment.
No software to install Free Works on any device
Step-by-Step Guide to Using the Colour Mixer
-
1. Fill in the fields with your own numbers
-
2. The answer updates as you type — there is no button to press
-
3. Read the breakdown underneath to see how the figure was reached
What is the Colour Mixer?
Mixes two colours and shows every step between them. Worth knowing that mixing in RGB is not how paint behaves — blue and yellow give grey rather than green, because screen colour is additive light and paint is subtractive pigment.
Why Use Colour and CSS Tools?
Choosing colours that work together and writing CSS for shadows, gradients or grids takes a lot of trial and error. These tools show a live preview as you adjust, then hand you the colour codes or CSS to copy.
“See it first, then copy the code.”
- Live previews while you adjust
- Codes in HEX, RGB and HSL
- CSS ready to paste
- Designs checked for colour blindness
- Palettes that work together
- Readable text checked for contrast
- Print colours in CMYK
- Colours taken from photos
Popular Uses for Colour Pickers and CSS Generators
Designers and site owners use these for the same handful of jobs.
- Brand colours Build a palette around a logo colour with matching tints, shades and accents.
- Readable buttons Check that text on a coloured button passes the WCAG contrast ratio.
- Card shadows Adjust a box shadow until a card looks right, then copy the CSS.
- Page layouts Set up a CSS grid or flexbox layout visually instead of guessing values.
- Print artwork Convert screen colours to CMYK and check bleed before sending a flyer to print.
- Colours from a photo Pull the main colours out of a product photo to match a web page.
- Colour blind checks See how a chart or poster looks to people with different kinds of colour blindness.
- Button styles Design a gradient, glass or soft 3D style button and take the code.
What You Can Do with the Colour Mixer
Exact where the spaces allow it, and says so where they do not
Contrast is reported against the WCAG thresholds, with the pass or fail stated plainly
Colour-blind simulation uses published transforms rather than an approximate filter
Why Use ToolXkit for Colour Mixer?
Your files stay with you
Everything runs inside your browser. Nothing you open or type is uploaded to a server.
Free, with no catch
No signup, no watermark and no daily limit on how often you use it.
Fast
Results appear in seconds, because nothing has to travel over the internet and back.
Works on any device
Use it on a computer, tablet or phone, in Chrome, Edge, Firefox or Safari.
Nothing to install
No app, no extension and no desktop program. Open the page and start.
Made for real people
Plain words and clear buttons, built by one developer who wanted tools like this to exist.
Design Tools for Different Users
Designers
Build palettes, test contrast and convert colours between HEX, RGB, HSL and CMYK.
Front-end developers
Generate CSS for gradients, shadows, animations and layouts and check it in a preview.
Design students
Learn how colour harmony and CSS properties work by changing them live.
Small business owners
Pick consistent brand colours for a shop sign, website and social posts.
Print designers
Convert colours for print and work out bleed, trim and pixel sizes.
Accessibility testers
Check contrast ratios and preview designs through different types of colour blindness.
Best Times to Pick Colours and Write CSS
These tools help when you are:
- Starting a new brand or logo
- Fixing text that is hard to read
- Styling a button or card
- Preparing a flyer for print
- Matching a colour from a photo
- Laying out a page with grid
- Checking a chart for colour blindness
- Converting a HEX code to RGB
Frequently Asked Questions
Answers to common questions about this tool.
Do I need to install anything to use the Colour Mixer?
No. Colour Mixer runs entirely in your browser — there is nothing to download, no extension and no desktop program. It works the same on Windows, macOS, Linux, Android and iPhone.
Is it safe to use the Colour Mixer online?
Safer than the usual alternative, yes. Most online tools upload your file to a server you know nothing about, where it sits until someone deletes it. Here the file never leaves your device — the processing happens in the page itself, so there is no server copy to leak, retain or sell.
Can I copy the CSS straight into my project?
Yes. The generators give plain CSS that works in current browsers. Copy it into your stylesheet, then adjust class names or values to fit the rest of your design.
Is Colour Mixer free for commercial work?
Yes. The colours, palettes and CSS you make are yours to use in client projects, products or anything else, with no credit required and no fee.
Why do my screen colours look different when printed?
Screens mix light in RGB, while printers mix ink in CMYK, and some bright screen colours cannot be printed. Convert to CMYK and ask your printer for a proof before a large print run.
What contrast ratio should my text have?
WCAG asks for at least 4.5 to 1 for normal text and 3 to 1 for large text. The Colour Contrast Checker shows whether your pair passes, so you can adjust before publishing.
Do I need to sign in to use Colour Mixer?
No. There is no account to create. Open the page, adjust the settings and copy the result. Your choices are worked out on your own device and never leave it.
Further reading
- Understanding contrast minimum (W3C WCAG) The W3C explanation of the contrast ratio that keeps text readable for people with low vision.
- CSS color values (MDN) How colours are written in CSS, from HEX and RGB to HSL and newer formats.
- Web colors (Wikipedia) The named colours browsers know and how HEX codes map to red, green and blue.
More Colour & CSS Tools
Other free tools for the same kind of job.
- Analogous Colour Generator Find the neighbouring colours that sit either side of yours. Open tool
- Bleed and Trim Calculator Work out the document size, safe area and pixel dimensions for print. Open tool
- CMYK to HEX Converter Turn CMYK print values into a hex colour code. Open tool
- Colour Blindness Simulator See roughly how a colour looks to someone who is colour blind. Open tool
- Colour Contrast Checker Check text against a background for WCAG AA and AAA. Open tool
- Colour Name Finder Find the closest named CSS colour to any code. Open tool
- Colour Palette Generator Build a matching palette from one colour you already like. Open tool
- Colour Picker Pick a colour and read it as HEX, RGB, HSL, HSB and CMYK at once. Open tool
- Colour Scale Generator Build the 50–950 ramp a design system needs from one colour. Open tool