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:                 #{$primary-600};
  --primary-border:          var(--primary);
  --primary-hover:           #{$primary-700};
  --primary-hover-border:    var(--primary-hover-border);
  --primary-focus:           #{rgba($primary-600, .125)};
  --primary-inverse:         #{$white};

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

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

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

  // Button
  --button-shadow:           0 0 0 0 rgba(0, 0, 0, 0);;
  --button-hover-shadow:     0 0 0 0 rgba(0, 0, 0, 0);

  // 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, .075)};
}