Play / Lab
Feel the
details.
01 · Motion engineering
ζ ratio
0.45
settle
0.63s
overshoot
20%
Spring physics tuner
Real damped spring integration with settle time and overshoot
cubic-bezier(0.16, 1, 0.3, 1)Easing curve editor
Drag the handles, copy the cubic bezier
02 · Systems and accessibility
Readable?
Body copy at 14px checks the AA rule.
10.89:1
WCAG contrast checker
Relative luminance math, live pass and fail
1.25 major third · 1.333 perfect fourth · 1.618 golden
Modular type scale
Generate a scale from a base size and ratio
Token preview
Token tuner
Live radius, hue and spacing tokens
Layout grid
Columns, gutters and margins
03 · Interaction and feedback
Click the dot as fast as you can.
Fitts law test
Measure your click time live
Button state machine
Idle, loading, success and error
Spring switch
Squash on press, spring on release
Physics card
Drag, fling, snap back
Haptic slider
Stepped ticks with pitch feedback
Counter pop
Pitch rises with every tap
Magnetic target
Hover to pull