///
Apply typography, color theory, spacing systems, and iconography principles to create cohesive visual designs. Use when establishing design tokens, building style guides, or improving visual hierarchy and consistency.
Install
$ npx agentshq add wshobson/agents --agent visual-design-foundationsApply typography, color theory, spacing systems, and iconography principles to create cohesive visual designs. Use when establishing design tokens, building style guides, or improving visual hierarchy and consistency.
Build cohesive, accessible visual systems using typography, color, spacing, and iconography fundamentals.
Modular Scale (ratio-based sizing):
:root {
--font-size-xs: 0.75rem; /* 12px */
--font-size-sm: 0.875rem; /* 14px */
--font-size-base: 1rem; /* 16px */
--font-size-lg: 1.125rem; /* 18px */
--font-size-xl: 1.25rem; /* 20px */
--font-size-2xl: 1.5rem; /* 24px */
--font-size-3xl: 1.875rem; /* 30px */
--font-size-4xl: 2.25rem; /* 36px */
--font-size-5xl: 3rem; /* 48px */
}
Line Height Guidelines: | Text Type | Line Height | |-----------|-------------| | Headings | 1.1 - 1.3 | | Body text | 1.5 - 1.7 | | UI labels | 1.2 - 1.4 |
8-point grid (industry standard):
:root {
--space-1: 0.25rem; /* 4px */
--space-2: 0.5rem; /* 8px */
--space-3: 0.75rem; /* 12px */
--space-4: 1rem; /* 16px */
--space-5: 1.25rem; /* 20px */
--space-6: 1.5rem; /* 24px */
--space-8: 2rem; /* 32px */
--space-10: 2.5rem; /* 40px */
--space-12: 3rem; /* 48px */
--space-16: 4rem; /* 64px */
}
Semantic color tokens:
:root {
/* Brand */
--color-primary: #2563eb;
--color-primary-hover: #1d4ed8;
--color-primary-active: #1e40af;
/* Semantic */
--color-success: #16a34a;
--color-warning: #ca8a04;
--color-error: #dc2626;
--color-info: #0891b2;
/* Neutral */
--color-gray-50: #f9fafb;
--color-gray-100: #f3f4f6;
--color-gray-200: #e5e7eb;
--color-gray-300: #d1d5db;
--color-gray-400: #9ca3af;
--color-gray-500: #6b7280;
--color-gray-600: #4b5563;
--color-gray-700: #374151;
--color-gray-800: #1f2937;
--color-gray-900: #111827;
}
// tailwind.config.js
module.exports = {
theme: {
extend: {
fontFamily: {
sans: ["Inter", "system-ui", "sans-serif"],
mono: ["JetBrains Mono", "monospace"],
},
fontSize: {
xs: ["0.75rem", { lineHeight: "1rem" }],
sm: ["0.875rem", { lineHeight: "1.25rem" }],
base: ["1rem", { lineHeight: "1.5rem" }],
lg: ["1.125rem", { lineHeight: "1.75rem" }],
xl: ["1.25rem", { lineHeight: "1.75rem" }],
"2xl": ["1.5rem", { lineHeight: "2rem" }],
},
colors: {
brand: {
50: "#eff6ff",
500: "#3b82f6",
600: "#2563eb",
700: "#1d4ed8",
},
},
spacing: {
// Extends default with custom values
18: "4.5rem",
88: "22rem",
},
},
},
};
Safe combinations:
/* Fluid typography using clamp() */
h1 {
font-size: clamp(2rem, 5vw + 1rem, 3.5rem);
line-height: 1.1;
}
p {
font-size: clamp(1rem, 2vw + 0.5rem, 1.125rem);
line-height: 1.6;
max-width: 65ch; /* Optimal reading width */
}
/* Prevent layout shift */
@font-face {
font-family: "Inter";
src: url("/fonts/Inter.woff2") format("woff2");
font-display: swap;
font-weight: 400 700;
}
| Element | Minimum Ratio | | ------------------ | ------------- | | Body text | 4.5:1 (AA) | | Large text (18px+) | 3:1 (AA) | | UI components | 3:1 (AA) | | Enhanced | 7:1 (AAA) |
:root {
--bg-primary: #ffffff;
--bg-secondary: #f9fafb;
--text-primary: #111827;
--text-secondary: #6b7280;
--border: #e5e7eb;
}
[data-theme="dark"] {
--bg-primary: #111827;
--bg-secondary: #1f2937;
--text-primary: #f9fafb;
--text-secondary: #9ca3af;
--border: #374151;
}
// Check contrast programmatically
function getContrastRatio(foreground: string, background: string): number {
const getLuminance = (hex: string) => {
const rgb = hexToRgb(hex);
const [r, g, b] = rgb.map((c) => {
c = c / 255;
return c <= 0.03928 ? c / 12.92 : Math.pow((c + 0.055) / 1.055, 2.4);
});
return 0.2126 * r + 0.7152 * g + 0.0722 * b;
};
const l1 = getLuminance(foreground);
const l2 = getLuminance(background);
const lighter = Math.max(l1, l2);
const darker = Math.min(l1, l2);
return (lighter + 0.05) / (darker + 0.05);
}
Card padding: 16-24px (--space-4 to --space-6)
Section gap: 32-64px (--space-8 to --space-16)
Form field gap: 16-24px (--space-4 to --space-6)
Button padding: 8-16px vertical, 16-24px horizontal
Icon-text gap: 8px (--space-2)
/* Consistent vertical rhythm */
.prose > * + * {
margin-top: var(--space-4);
}
.prose > h2 + * {
margin-top: var(--space-2);
}
.prose > * + h2 {
margin-top: var(--space-8);
}
:root {
--icon-xs: 12px;
--icon-sm: 16px;
--icon-md: 20px;
--icon-lg: 24px;
--icon-xl: 32px;
}
interface IconProps {
name: string;
size?: "xs" | "sm" | "md" | "lg" | "xl";
className?: string;
}
const sizeMap = {
xs: 12,
sm: 16,
md: 20,
lg: 24,
xl: 32,
};
export function Icon({ name, size = "md", className }: IconProps) {
return (
<svg
width={sizeMap[size]}
height={sizeMap[size]}
className={cn("inline-block flex-shrink-0", className)}
aria-hidden="true"
>
<use href={`/icons.svg#${name}`} />
</svg>
);
}