pico/scss/themes/default/_light.scss

// Light theme (Default)
// Can be forced with data-theme="light"
[data-theme="light"],
:root:not([data-theme="dark"]) {

  // Document
  --background:        #{$white};

  // Typography
  --text:              #{$grey-700};
  --h1:                #{$grey-900};
  --h2:                #{$grey-800};
  --h3:                #{$grey-700};
  --h4:                #{$grey-600};
  --h5:                #{$grey-500};
  --h6:                #{$grey-400};

  // Primary Call-to-Action and links
  --primary:           #{$primary-600};
  --primary-hover:     #{$primary-700};
  --primary-focus:     #{rgba($primary-600, .125)};
  --primary-inverse:   #{$white};

  // Secondary Call-to-Action, links and kbd
  --secondary:         #{$grey-500};
  --secondary-hover:   #{$grey-700};
  --secondary-focus:   #{rgba($grey-500, .125)};
  --secondary-inverse: #{$white};

  // Contrast Call-to-Action and Tooltips
  --contrast:          #{$grey-800};
  --contrast-hover:    #{mix($grey-900, $black)};
  --contrast-focus:    #{rgba($grey-500, .125)};
  --contrast-border:   #{rgba($amber-200, .5)}; // Links underline
  --contrast-border-h: #{rgba($amber-200, 1)};  // Links hover underline
  --contrast-inverse:  #{$white};

  // Form elements
  --input-background:  #{$white};
  --input-border:      #{mix($grey-100, $grey-200)};

  // Utilities states
  --valid:             #{$green-600};
  --invalid:           #{$red-700};
  --mark:              #{rgba($amber-200, .5)};
  --mark-text:         #{$grey-800};
  --muted-text:        #{mix($grey-400, $grey-500)};
  --muted-background:  #{$grey-50};
  --muted-border:      #{$grey-50};

  // Card
  --card-background:   #{$white};
  --card-sections:     #{lighten($grey-50, 2%)};
  --card-shadow:       0 0.125rem 1rem #{rgba($grey-900, 0.04)}, 0 0.125rem 2rem #{rgba($grey-900, 0.08)}, 0 0 0 0.0625rem #{rgba($grey-900, 0.024)};

  // Code
  --code-background:   #{lighten($grey-50, 2%)};
  --code-inlined:      #{$grey-50};
  --code-color-1:      #{$grey-500};
  --code-color-2:      #{hsl(330, 40%, 50%)};
  --code-color-3:      #{hsl(185, 40%, 40%)};
  --code-color-4:      #{hsl(40,  20%, 50%)};
  --code-color-5:      #{mix($grey-300, $grey-400)};

  // Table
  --table-border:      #{rgba($grey-50, .75)};
  --table-stripping:   #{rgba($grey-500,.04)};
}