Mix and compare colors on your Mac
Suisai's Color Bench gives you a dedicated space to compare colors, measure their differences, and experiment with pigment-inspired mixing.
Bring in colors from your existing palettes, adjust them side by side, and explore new combinations without losing track of where they came from.
Blue and yellow make green here, not gray. The Bench uses a spectral pigment model rather than averaging RGB values, producing mixtures that behave more like physical paints.
A native macOS color toolbox. No account, no subscription, and your colors stay on your Mac.
See exactly how two colors differ
Send colors to the Bench from any palette, or sample them straight off the screen, and arrange the columns in whichever order you want to read.
Between neighboring colors, the Bench displays differences in hue (ΔH), lightness (ΔL), and overall perceptual color difference (ΔE), along with the color space used for the calculations.
The gutter also displays their WCAG contrast ratio. Select it to open the pair in Nōtan for a closer look at the applicable accessibility thresholds.
Colors sent from an open palette stay linked to it. Adjust one on the Bench and the palette follows, or change it in the palette and watch the Bench respond.
Mix colors like paint
Mixing colors digitally isn't necessarily the same as mixing physical pigments. Conventional RGB interpolation blends numerical color values, while real pigments interact with different wavelengths of light.
Suisai uses a spectral pigment model based on Kubelka–Munk theory, producing mixtures that more closely resemble the behavior of physical paints. Mix blue and yellow, for example, and you can create greens rather than the desaturated intermediate colors produced by conventional RGB blending.
Open a mixing well between two colors on the Bench and adjust their proportions. Add white or black pigment to create lighter or darker variations, and use the ramp behind the slider to see how the mixture changes across different ratios.
Adjust either starting color and the mixture updates immediately.
From a live mixture to a new color
While a mixing well is open, the resulting color remains linked to its two parent colors. Change either parent or adjust the mixing ratio, and the result updates automatically.
Suisai identifies these results as DERIVED, distinguishing mixed colors from those you've sampled or created directly.
When you find a color you want to keep, add it to an open palette or place it on the Bench as a separate column. A staged mixture retains its current color rather than continuing to change with the original mixing well.
From there, you can compare it against other colors, use it in another mixture, or incorporate it into a palette for future projects.
Compare, adjust, and mix colors
Where your mixes come from, and where they go
The Bench works on colors you already have. These pages cover finding them in the first place, and what to do with the ones you keep.
- Explore color harmonies →Seven harmony modes and adjustable ramps, from a single starting color.
- Build and edit palettes →Create, refine, name, and organize the colors you send to the Bench.
- Extract colors from photographs →Find new starting colors in images and bring them into your palettes.
- Check color contrast →The ratio in the Bench's gutter, opened out and graded against WCAG 2.2.
Compare your colors. Create something new.
Measure differences in hue, lightness, and perceptual color distance, check WCAG contrast between neighboring colors, and experiment with spectral pigment mixing.
Keep the colors you create, refine them alongside your existing palettes, and use them in your design and development projects.
One purchase. No subscription. No account or analytics.
If Suisai isn't right for you, a full refund is available within 30 days for direct purchases via Paddle. No reason needed.
macOS 14 or later · Universal · One-time purchase