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Adjust colors based on WCAG contrast criterion #891

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Merged
merged 1 commit into from
Apr 21, 2025
Merged

Adjust colors based on WCAG contrast criterion #891

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4 changes: 2 additions & 2 deletions _sass/minima/_layout.scss
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Original file line number Diff line number Diff line change
Expand Up @@ -145,7 +145,7 @@
.footer-col-wrapper,
.social-links {
@include relative-font-size(0.9375);
color: $brand-color;
color: $brand-color-dimmed;
}

.footer-col {
Expand Down Expand Up @@ -225,7 +225,7 @@

.post-meta {
font-size: $small-font-size;
color: $brand-color;
color: $brand-color-dimmed;
}

.post-link {
Expand Down
13 changes: 10 additions & 3 deletions _sass/minima/skins/auto.scss
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ $color-scheme-dark: false !default;

$lm-brand-color: #818181 !default;
$lm-brand-color-light: lighten($lm-brand-color, 40%) !default;
$lm-brand-color-dimmed: darken($lm-brand-color, 11%) !default;
$lm-brand-color-dark: darken($lm-brand-color, 25%) !default;

$lm-site-title-color: $lm-brand-color-dark !default;
Expand All @@ -21,7 +22,7 @@ $lm-text-color: $lm-brand-color-dark !default;
$lm-background-color: #fdfdfd !default;
$lm-code-background-color: #f6f8fa !default;

$lm-link-base-color: #2a7ae2 !default;
$lm-link-base-color: #1e69d8 !default;
$lm-link-visited-color: darken($lm-link-base-color, 15%) !default;
$lm-link-hover-color: $lm-text-color !default;

Expand Down Expand Up @@ -120,6 +121,7 @@ $lm-table-border-color: $lm-border-color-01 !default;

$dm-brand-color: #999999 !default;
$dm-brand-color-light: lighten($dm-brand-color, 5%) !default;
$dm-brand-color-dimmed: darken($dm-brand-color, 8%) !default;
$dm-brand-color-dark: darken($dm-brand-color, 43%) !default;

$dm-site-title-color: $dm-brand-color-light !default;
Expand All @@ -129,8 +131,8 @@ $dm-text-color: darken($dm-heading-color, 15%) !default;
$dm-background-color: #181818 !default;
$dm-code-background-color: #222222 !default;

$dm-link-base-color: #79b8ff !default;
$dm-link-visited-color: $dm-link-base-color !default;
$dm-link-base-color: #5691cd !default;
$dm-link-visited-color: #80bbff !default;
$dm-link-hover-color: $dm-text-color !default;

$dm-border-color-01: $dm-brand-color-dark !default;
Expand Down Expand Up @@ -236,6 +238,7 @@ $dm-table-border-color: $dm-border-color-01 !default;

$brand-color: $lm-brand-color;
$brand-color-light: $lm-brand-color-light;
$brand-color-dimmed: $lm-brand-color-dimmed;
$brand-color-dark: $lm-brand-color-dark;

$site-title-color: $lm-site-title-color;
Expand Down Expand Up @@ -267,6 +270,7 @@ $table-border-color: $lm-table-border-color;
:root {
--minima-brand-color: #{$lm-brand-color};
--minima-brand-color-light: #{$lm-brand-color-light};
--minima-brand-color-dimmed: #{$lm-brand-color-dimmed};
--minima-brand-color-dark: #{$lm-brand-color-dark};

--minima-site-title-color: #{$lm-site-title-color};
Expand Down Expand Up @@ -297,6 +301,7 @@ $table-border-color: $lm-table-border-color;
:root {
--minima-brand-color: #{$dm-brand-color};
--minima-brand-color-light: #{$dm-brand-color-light};
--minima-brand-color-dimmed: #{$dm-brand-color-dimmed};
--minima-brand-color-dark: #{$dm-brand-color-dark};

--minima-site-title-color: #{$dm-site-title-color};
Expand Down Expand Up @@ -326,6 +331,7 @@ $table-border-color: $lm-table-border-color;

$brand-color: var(--minima-brand-color);
$brand-color-light: var(--minima-brand-color-light);
$brand-color-dimmed: var(--minima-brand-color-dimmed);
$brand-color-dark: var(--minima-brand-color-dark);

$site-title-color: var(--minima-site-title-color);
Expand Down Expand Up @@ -356,6 +362,7 @@ $table-border-color: $lm-table-border-color;

$brand-color: $dm-brand-color;
$brand-color-light: $dm-brand-color-light;
$brand-color-dimmed: $dm-brand-color-dimmed;
$brand-color-dark: $dm-brand-color-dark;

$site-title-color: $dm-site-title-color;
Expand Down
38 changes: 33 additions & 5 deletions _sass/minima/skins/solarized.scss
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Original file line number Diff line number Diff line change
Expand Up @@ -15,12 +15,15 @@ $sol-is-dark: false !default;
// Color scheme
// ------------
// The inline comments show the canonical L*a*b values for each color.
//
// Some colors were altered from the canonical scheme to comply with
// WCAG-contrast criteria between foreground and background colors.

$sol-base03: #002b36; // 15 -12 -12
$sol-base02: #073642; // 20 -12 -12
$sol-base01: #586e75; // 45 -07 -07
$sol-base00: #657b83; // 50 -07 -07
$sol-base0: #839496; // 60 -06 -03
$sol-base00: #4e626a; // original hex: #657b83 ; L*a*b: 50 -07 -07
$sol-base0: #91a0a1; // original hex: #839496 ; L*a*b: 60 -06 -03
$sol-base1: #93a1a1; // 65 -05 -02
$sol-base2: #eee8d5; // 92 -00 10
$sol-base3: #fdf6e3; // 97 00 10
Expand All @@ -33,6 +36,11 @@ $sol-blue: #268bd2; // 55 -10 -45
$sol-cyan: #2aa198; // 60 -35 -05
$sol-green: #859900; // 60 -20 65

// Non-canonical; Derived to comply with WCAG-contrast criterion.
$sol-light-blue: #469edd;
$sol-light-blue2: #64a5ce;
$sol-dark-blue: #2072ac;
$sol-dark-blue2: #376a8b;

// Mixed colors
// ------------
Expand All @@ -49,7 +57,6 @@ $sol-dark-mix2: mix($sol-blue, $sol-base0);
$sol-dark-mix3: mix($sol-base02, $sol-base03);
$sol-dark-mix4: #193843; // custom mixture of `$sol-base01` and `$sol-base03`.


// Mode selection
// --------------

Expand All @@ -63,6 +70,10 @@ $sol-mix2: $sol-light-mix2;
$sol-mix3: $sol-light-mix3;
$sol-mix4: $sol-light-mix4;

$sol-mono1-dimmed: darken($sol-base1, 20%);
$sol-link-color: $sol-dark-blue;
$sol-link-visited: $sol-dark-blue2;

@if $sol-is-dark {
$sol-mono3: $sol-base03;
$sol-mono2: $sol-base02;
Expand All @@ -73,6 +84,10 @@ $sol-mix4: $sol-light-mix4;
$sol-mix2: $sol-dark-mix2;
$sol-mix3: $sol-dark-mix3;
$sol-mix4: $sol-dark-mix4;

$sol-mono1-dimmed: lighten($sol-base01, 16%);
$sol-link-color: $sol-light-blue;
$sol-link-visited: $sol-light-blue2;
}

@if $sol-is-auto {
Expand All @@ -86,6 +101,10 @@ $sol-mix4: $sol-light-mix4;
--solarized-mix2: #{$sol-light-mix2};
--solarized-mix3: #{$sol-light-mix3};
--solarized-mix4: #{$sol-light-mix4};

--solarized-mono1-dimmed: #{darken($sol-base1, 20%)};
--solarized-link-color: #{$sol-dark-blue};
--solarized-link-visited: #{$sol-dark-blue2};
}

@media (prefers-color-scheme: dark) {
Expand All @@ -99,6 +118,10 @@ $sol-mix4: $sol-light-mix4;
--solarized-mix2: #{$sol-dark-mix2};
--solarized-mix3: #{$sol-dark-mix3};
--solarized-mix4: #{$sol-dark-mix4};

--solarized-mono1-dimmed: #{lighten($sol-base01, 16%)};
--solarized-link-color: #{$sol-light-blue};
--solarized-link-visited: #{$sol-light-blue2};
}
}

Expand All @@ -111,6 +134,10 @@ $sol-mix4: $sol-light-mix4;
$sol-mix2: var(--solarized-mix2);
$sol-mix3: var(--solarized-mix3);
$sol-mix4: var(--solarized-mix4);

$sol-mono1-dimmed: var(--solarized-mono1-dimmed);
$sol-link-color: var(--solarized-link-color);
$sol-link-visited: var(--solarized-link-visited);
}


Expand All @@ -119,6 +146,7 @@ $sol-mix4: $sol-light-mix4;

$brand-color: $sol-mono1 !default;
$brand-color-light: $sol-mix4 !default;
$brand-color-dimmed: $sol-mono1-dimmed !default;
$brand-color-dark: $sol-mono00 !default;

$site-title-color: $sol-mono00 !default;
Expand All @@ -128,8 +156,8 @@ $text-color: $sol-mono00 !default;
$background-color: $sol-mono3 !default;
$code-background-color: $sol-mix3 !default;

$link-base-color: $sol-blue !default;
$link-visited-color: $sol-mix2 !default;
$link-base-color: $sol-link-color !default;
$link-visited-color: $sol-link-visited !default;
$link-hover-color: $sol-mono00 !default;

$border-color-01: $brand-color-light !default;
Expand Down
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