Mix two hex colors by computing a per-channel weighted average — result = round(A × (1 − ratio) + B × ratio) — whenever you need a new color that sits at a precise, reproducible point between two existing ones. The decision to blend is about intent: are you trying to derive a new color from two known ones (in which case mixing is the right call), or are you hunting for a new color from scratch (in which case a palette generator or random picker usually serves you better)? If your goal is to nudge a brand color slightly toward a partner color, find the literal midpoint of a gradient, sample one of eleven evenly spaced steps in a transition, or generate a tinted or shaded variation you can defend with numbers, blending two hex colors gives you a deterministic answer. The Color Mixer does exactly this math in your browser and shows you the hex and RGB of the result so you can paste it straight into CSS or your design file.
When Mixing Two HEX Colors Is the Right Choice
The decision to mix two hex colors is straightforward when you already know both endpoints and you want a specific, defensible value between them. Mixing is the right call in five common situations:
- You need an exact midpoint. A literal 50/50 blend of two existing colors — for example, the transitional shade between a primary button color and an alert color when neither is the right answer on its own.
- You're building a color scale with reproducible steps. Chart palettes, gradient stops, and status indicators that progress from "good" to "bad" all need evenly spaced intermediate values.
- You want to nudge one color toward another. Shifting a brand blue 20% toward teal for a hover state, or shifting it 10% toward navy for an active state, gives you a controlled variation tied mathematically to the original.
- You want a tint or shade at a specific distance. A 30% white tint or a 20% black shade, expressed as a blend with white or black, is reproducible across sessions and tools.
- You need a value that matches how CSS gradients interpolate. If you're hand-picking a third gradient stop to sit between two anchor stops, the browser uses sRGB linear interpolation to paint between them. Matching that math in your blend keeps your CSS honest.
In all of these cases the underlying question is "what color lives at position X between A and B?" Mixing answers that question directly with a numeric result.
When You Don't Need to Mix — Pick or Generate Instead
Mixing is the wrong tool when you don't actually have two meaningful starting colors, or when the question you're trying to answer isn't "what lives between these two?" but "what goes with this?" or "what color should I use here?"
Pick or generate instead when:
- You have one color and want a harmonious companion. The Color Palette Generator returns complementary, analogous, and triadic schemes from a single base. Mixing your base with arbitrary secondaries won't give you harmony by default — it gives you a midpoint, which is a different thing.
- You need a brand-new color with no constraints. A Random Color Generator samples freely. Mixing forces a relationship between two inputs, and if you don't have meaningful inputs, the result is meaningless too.
- You're choosing a foreground/background pair for readability. A Color Contrast Checker tells you whether a chosen pair passes WCAG AA or AAA. Mixing tells you what's between them, which doesn't directly answer an accessibility question.
- You need a print-safe or named color. A Named Colors Chart or an RGB to CMYK converter addresses different output spaces. sRGB interpolation does not translate to ink mixing or named swatches, so the result won't be meaningful in those contexts.
The pattern is simple: if you can name both endpoints, mix. If you can only name one endpoint or neither, pick or generate first, and only return to mixing once you have two colors you actually want to relate.
How to Mix Two HEX Colors in Your Browser
Using the Color Mixer, you can blend two hex colors in five steps. Everything runs locally in your browser with no upload and no sign-up.
- Enter your first color in the Color A field. Type a short hex like #f00, a full hex like #3b82f6, or an rgb() string like rgb(59, 130, 246). Extra spaces, missing hash marks, and mixed case are all tolerated. You can also click the swatch beside the field to pick visually.
- Enter your second color in the Color B field the same way — hex, rgb(), or picker.
- Drag the ratio slider to set the blend ratio. 0% is pure Color A, 100% is pure Color B, and 50% is the exact midpoint. The result updates instantly as you drag.
- Read the mixed color's hex and RGB in the result panel. The gradient bar below shows eleven evenly spaced steps between your two colors, so you can eyeball where a pleasing intermediate lives.
- Click Copy to put the result hex on your clipboard, ready to paste into CSS, a design file, or a chart config.
The label next to the slider always tells you the current split (for example "70% A / 30% B"), so any blend you find is reproducible — return to the same ratio later and you'll get the same hex.
What sRGB Linear Interpolation Actually Does (and Doesn't)
The Color Mixer blends with simple sRGB linear interpolation. For each of the red, green, and blue channels, the result is a weighted average:
result = round(A × (1 − ratio) + B × ratio)
with the ratio clamped to [0, 1] and each channel clamped to 0–255. At a ratio of 0.5 you get the exact midpoint of the two channel values. This is the same math CSS gradients and most UI tools use, which is why the blend result matches what a browser would paint between two gradient stops.
Worked example — mixing pure red (#ff0000) and pure blue (#0000ff) at 50%:
- Red channel: round(255 × 0.5 + 0 × 0.5) = round(127.5) = 128
- Green channel: round(0 × 0.5 + 0 × 0.5) = 0
- Blue channel: round(0 × 0.5 + 255 × 0.5) = round(127.5) = 128
Result: rgb(128, 0, 128) = #800080, a clean magenta — exactly what the Color Mixer shows.
Be aware of what this is not. sRGB linear interpolation mixes screen light values, not physical pigments. It is not gamma-corrected optical light mixing, and it is not subtractive paint or ink mixing. That's why red plus blue here gives magenta, while physically blending red and blue paint on a palette gives a muddy dark purple or brown. For any on-screen work — websites, apps, icons, charts — sRGB interpolation is the correct model. For predicting how acrylics or printer inks combine on paper, no screen-based blend can model that, and the tool will not pretend to.
Common Situations That Call for a Blended Color
Once you've decided mixing is the right approach, these are the practical situations where it pays off:
- Brand tints and shades. You have a primary brand color and need a 10%, 20%, or 40% lighter or darker version for backgrounds, hover states, or disabled controls. Blending your brand color with white or black at a precise ratio gives you reproducible tints.
- Gradient stops. You're building a gradient between two anchor colors and need a third middle stop that's exactly halfway (or 30/70, or whatever your design calls for). Mixing gives you that stop without eyeballing.
- Chart palettes. Sequential or diverging palettes need evenly spaced steps. The Color Mixer's eleven-step gradient bar is a quick way to sample a palette from two endpoints before committing to specific stops.
- Transitional UI states. Hover, focus, active, and selected states often need a color that sits between the resting state and a stronger emphasis color. Mixing at 70/30 or 60/40 gives a clean intermediate that ties back to both anchors.
- Design exploration. You want to see what two colors look like meeting in the middle before committing. The gradient bar lets you compare all eleven steps side by side and pick one with confidence.
In each case the underlying question is "what value sits at position X between A and B?" — and that is exactly what mixing answers.
Mix vs. Alternatives at a Glance
Here is how the question "do I need to mix two hex colors?" lines up against common alternatives:
| Your situation | Best fit | Why |
|---|---|---|
| You know two colors and want a precise value between them | Color Mixer | Deterministic per-channel weighted average at your chosen ratio |
| You have one color and need a harmonious palette | Color Palette Generator | Returns complementary, analogous, triadic schemes by design rule |
| You need a brand-new color with no constraints | Random Color Generator | Samples freely without requiring two inputs |
| You need a foreground/background pair that passes WCAG | Color Contrast Checker | Validates contrast ratio against AA/AAA, not a midpoint question |
| You need a CMYK preview for print | RGB to CMYK Converter | Addresses the print color space, which sRGB mixing does not model |
| You need gradient CSS code, not just a midpoint | Color Gradient Generator | Returns production-ready linear or radial CSS |
Rule of thumb: if you can name both endpoints, mix. If you can only name one endpoint or neither, pick or generate first — and only return to mixing once you have two specific colors you actually want to relate.