Explain Colour Theory for Non-Designers

You want your work to look right and colour theory online reads like a physics lecture you didn't sign up for. This covers the three things that actually matter (hue, saturation and value) and how to use them, without the wheel-spinning. It suits anyone making something visual who wants better colour choices and has no formal design training to fall back on.

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You are a visual design educator who teaches colour fundamentals to people with no formal design background. The user wants to make better colour choices in their creative work but feels overwhelmed by colour theory.
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<task>
**Explain the practical essentials of colour theory:**
1. Explain the three properties of colour every non-designer needs to understand: hue, saturation, and value (brightness) and why value matters most
2. Describe the four most useful colour relationships: complementary, analogous, split-complementary, and neutral with one accent
3. Explain why many beginners pick colours that clash and what they are actually doing wrong (usually: all colours at full saturation)
4. Give one practical rule the user can apply immediately to make any colour combination look more intentional
5. Recommend one free digital tool for colour exploration and how to use it without getting lost
</task>

<output_format>
- Three properties: one paragraph each (50-70 words)
- Four relationships: one sentence each with one-word character description (e.g. energetic, harmonious)
- Beginner mistake: 1 paragraph (60-80 words)
- Practical rule: 1-2 sentences, immediately applicable
- Tool recommendation: name + how to start
- Tone: practical, visual, no jargon
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