colour mix calculator

What is a colour mix calculator?

A colour mix calculator is a practical tool that helps you combine two colours in a chosen ratio and instantly see the resulting colour. Instead of guessing or mixing by trial and error, you can estimate a final shade with maths before opening paint tins, adjusting digital palettes, or choosing brand colours.

This tool works like a quick colour blending assistant. You provide two input colours (HEX values such as #ff0000 and #0000ff), set a percentage split, and the calculator returns a blended result in multiple formats. That means you can use it as a:

• HEX colour blender for web design
• RGB mixer for UI and app styling
• Paint ratio calculator for rough physical mixing plans
• Colour palette helper for branding and illustration

How the calculator works

The math behind colour blending is straightforward linear interpolation. For each RGB channel (red, green, blue), the result is:

mixed channel = (A × ratioA) + (B × ratioB)

Example: if Colour A is 70% and Colour B is 30%, each channel is weighted the same way. The final mixed RGB values are then converted into HEX. We also provide an approximate CMYK conversion for print-oriented workflows.

Additive vs subtractive mixing (important)

On screens, colour is usually additive (RGB light). In paint and ink, mixing is largely subtractive (pigments). This calculator gives a reliable digital blend estimate, but real paint can look different due to pigment chemistry, opacity, drying behaviour, and surface texture.

• Use digital output directly for websites, apps, presentations, and graphics.
• Use physical output as a starting point for paint, then do a small test swatch in real life.

Best uses for this colour blending tool

1) Design systems and UI work

If you need intermediate tones between a primary colour and neutral shade, this calculator quickly generates balanced steps. It is useful for button states, hover states, subtle backgrounds, and chart gradients.

2) Art and hobby projects

Planning acrylic, gouache, or model paint mixes becomes easier when you estimate percentages first. Enter total volume to get rough millilitre guidance for each source colour.

3) Branding and marketing assets

Need a softer variant of a brand colour? Mix with white, black, or another accent colour to preview alternatives while keeping consistency across posters, social graphics, and digital ads.

Tips for better colour mixing results

• Start with 50/50, then adjust in 5% increments for precise tuning.
• For lighter shades, blend with white or very light neutrals.
• For muted tones, mix with complementary colours carefully in small amounts.
• Always test final colours in the actual environment (monitor, paper, wall, fabric).
• When printing, compare against proof output because CMYK reproduction varies by device.

Quick FAQ

Can I mix more than two colours?

This version focuses on two-colour blending for speed and clarity. For multi-stop palettes, blend in stages (mix A+B first, then mix the result with C).

Why does my paint not exactly match the calculated result?

Pigments are not pure RGB channels. Real-world factors like binder, finish, transparency, substrate, and lighting can shift appearance. Use the value as a planning baseline, not a guaranteed physical match.

What format should I use for web projects?

HEX is most common for CSS, while RGB is handy when building transparency layers or dynamic calculations in JavaScript.

Final note

A solid colour mix calculator saves time, reduces waste, and helps you make faster decisions. Whether you are adjusting a digital theme, planning a painting session, or building a colour palette generator workflow, this tool gives you quick, practical direction.