Pick base FG/BG via compact palette. Auto tunes the comfort sliders only (base colors stay
unchanged).
Click tmux lines or click parts of the tmux simulator to apply current adjusted fg/bg and copy.
Preview text is editable (click into it).
1) Pick colors
Palette hidden until you click FG/BG. Shift-click in palette sets BG.
hover: —
2) Comfort model
+10
-12
15%
Auto keeps base colors fixed and picks slider values that maximize readability while avoiding
“glare” and oversaturation.
Quick xterm examples (click to apply)
These set base FG/BG and comfort sliders to the example’s values, so you can use them as starting
points.
Preview + metrics
Metrics
Contrast ratio (WCAG)
—
ΔL* (perceptual lightness)
—
What you’re learning
Luminance contrast drives readability.
Glare control: avoid pure black BG + pure white FG for long reading.
Saturation control: intense chroma works for accents, tiring for body text.
tmux style lines + simulator
Only color/style-related tmux lines are shown here (plus the pane/status texts where formatting and style
are intertwined).
Click a line to apply current adjusted fg/bg (if applicable) and copy. Click simulator regions to
auto-target the right line.
