Utopia Fluid Scales
This project's fluid typography and spacing system
Configuration
Generated from: https://utopia.fyi/space/calculator?c=360,18,1.2,1240,20,1.25,5,2,&s=0.75|0.5|0.25,1.5|2|3|4|6,s-l&g=s,l,xl,12
| Parameter | Value |
|---|---|
| Min viewport | 360px |
| Max viewport | 1240px |
| Min base size | 18px |
| Max base size | 20px |
| Min scale ratio | 1.2 (Minor Third) |
| Max scale ratio | 1.25 (Major Third) |
Unit: cqi (container query inline) - requires a container context to function.
Type Scale
Location: css/styles/typography.css
css
:root {
--step--2: clamp(0.7813rem, 0.7736rem + 0.0341cqi, 0.8rem);
--step--1: clamp(0.9375rem, 0.9119rem + 0.1136cqi, 1rem);
--step-0: clamp(1.125rem, 1.0739rem + 0.2273cqi, 1.25rem);
--step-1: clamp(1.35rem, 1.2631rem + 0.3864cqi, 1.5625rem);
--step-2: clamp(1.62rem, 1.4837rem + 0.6057cqi, 1.9531rem);
--step-3: clamp(1.944rem, 1.7405rem + 0.9044cqi, 2.4414rem);
--step-4: clamp(2.3328rem, 2.0387rem + 1.3072cqi, 3.0518rem);
--step-5: clamp(2.7994rem, 2.384rem + 1.8461cqi, 3.8147rem);
}
Type Step Reference
| Token | Min (360px) | Max (1240px) | Use Case |
|---|---|---|---|
--step--2 | 12.5px | 12.8px | Captions, fine print |
--step--1 | 15px | 16px | Small text, metadata |
--step-0 | 18px | 20px | Body text (base) |
--step-1 | 21.6px | 25px | Large body, lead text |
--step-2 | 25.9px | 31.3px | H4 equivalent |
--step-3 | 31.1px | 39.1px | H3 equivalent |
--step-4 | 37.3px | 48.8px | H2 equivalent |
--step-5 | 44.8px | 61px | H1 equivalent |
Applied Styles
css
body {
font-family: var(--font-base);
font-size: var(--step-0);
line-height: 1.5;
}
Note: No heading styles (h1-h6) are currently applied. Add as needed:
css
h1 { font-size: var(--step-5); }
h2 { font-size: var(--step-4); }
h3 { font-size: var(--step-3); }
h4 { font-size: var(--step-2); }
h5 { font-size: var(--step-1); }
h6 { font-size: var(--step-0); }
Space Scale
Location: css/styles/space.css
Individual Space Tokens
css
:root {
--space-3xs: clamp(0.3125rem, 0.3125rem + 0cqi, 0.3125rem);
--space-2xs: clamp(0.5625rem, 0.5369rem + 0.1136cqi, 0.625rem);
--space-xs: clamp(0.875rem, 0.8494rem + 0.1136cqi, 0.9375rem);
--space-s: clamp(1.125rem, 1.0739rem + 0.2273cqi, 1.25rem);
--space-m: clamp(1.6875rem, 1.6108rem + 0.3409cqi, 1.875rem);
--space-l: clamp(2.25rem, 2.1477rem + 0.4545cqi, 2.5rem);
--space-xl: clamp(3.375rem, 3.2216rem + 0.6818cqi, 3.75rem);
--space-2xl: clamp(4.5rem, 4.2955rem + 0.9091cqi, 5rem);
--space-3xl: clamp(6.75rem, 6.4432rem + 1.3636cqi, 7.5rem);
}
Space Token Reference
| Token | Min (360px) | Max (1240px) |
|---|---|---|
--space-3xs | 5px | 5px |
--space-2xs | 9px | 10px |
--space-xs | 14px | 15px |
--space-s | 18px | 20px |
--space-m | 27px | 30px |
--space-l | 36px | 40px |
--space-xl | 54px | 60px |
--space-2xl | 72px | 80px |
--space-3xl | 108px | 120px |
One-Up Space Pairs
Fluid transitions between adjacent sizes:
css
:root {
--space-3xs-2xs: clamp(0.3125rem, 0.1847rem + 0.5682cqi, 0.625rem);
--space-2xs-xs: clamp(0.5625rem, 0.4091rem + 0.6818cqi, 0.9375rem);
--space-xs-s: clamp(0.875rem, 0.7216rem + 0.6818cqi, 1.25rem);
--space-s-m: clamp(1.125rem, 0.8182rem + 1.3636cqi, 1.875rem);
--space-m-l: clamp(1.6875rem, 1.3551rem + 1.4773cqi, 2.5rem);
--space-l-xl: clamp(2.25rem, 1.6364rem + 2.7273cqi, 3.75rem);
--space-xl-2xl: clamp(3.375rem, 2.7102rem + 2.9545cqi, 5rem);
--space-2xl-3xl: clamp(4.5rem, 3.2727rem + 5.4545cqi, 7.5rem);
}
Custom Space Pair
css
:root {
--space-s-l: clamp(1.125rem, 0.5625rem + 2.5cqi, 2.5rem);
}
| Token | Min | Max | Scaling |
|---|---|---|---|
--space-s-l | 18px | 40px | Dramatic (2.2x) |
Usage Examples
css
/* Padding with space tokens */
.card {
padding: var(--space-m);
}
/* Fluid gap */
.stack {
display: flex;
flex-direction: column;
gap: var(--space-s-m);
}
/* Typography */
.title {
font-size: var(--step-3);
}
/* Section spacing */
.section {
padding-block: var(--space-l-xl);
}
Container Requirement
These scales use cqi units which require a container context. Without a parent with container-type: inline-size, the fluid calculation may not work as expected.
css
/* Required for cqi units to function */
.parent {
container-type: inline-size;
}
Files
- •
css/styles/typography.css- Type scale and body styles - •
css/styles/space.css- Space tokens and pairs