server/core/css/variables.scss

/**
 * @copyright Copyright (c) 2018, John Molakvoæ (skjnldsv@protonmail.com)
 *
 * @author John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

 // SCSS darken/lighten function override
@function nc-darken($color, $value) {
	@return darken($color, $value);
}

@function nc-lighten($color, $value) {
	@return lighten($color, $value);
}

// SCSS variables
// DEPRECATED, please use CSS4 vars
$color-main-text: #222 !default; // Not #000 for better readability
$color-main-background: #fff !default;
$color-main-background-translucent: rgba($color-main-background, .97) !default;

// used for different active/disabled states
$color-background-dark: nc-darken($color-main-background, 7%) !default;
$color-background-darker: nc-darken($color-main-background, 14%) !default;

$color-primary: #0082c9 !default;
$color-primary-text: #ffffff !default;
// do not use nc-darken/lighten in case of overriding because
// primary-text is independent of color-main-text
$color-primary-text-dark: darken($color-primary-text, 7%) !default;
$color-primary-element: $color-primary !default;
$color-primary-element-light: lighten($color-primary-element, 15%) !default;

$color-error: #e9322d;
$color-warning: #eca700;
$color-success: #46ba61;
// used for svg
$color-white: #fff;
$color-black: #000;
$color-yellow: #FC0;

// rgb(118, 118, 118) / #767676
// min. color contrast for normal text on white background according to WCAG AA
// (Works as well: color: #000; opacity: 0.57;)
$color-text-maxcontrast: nc-lighten($color-main-text, 46.2%) !default;
$color-text-light: nc-lighten($color-main-text, 15%) !default;
$color-text-lighter: nc-lighten($color-main-text, 30%) !default;

$image-logo: url('../img/logo/logo.svg?v=1') !default;
$image-login-background: url('../img/background.png?v=2') !default;

$color-loading-light: #ccc !default;
$color-loading-dark: #444 !default;

$color-box-shadow: rgba(nc-darken($color-main-background, 70%), 0.5) !default;

// light border like file table or app-content list
$color-border: nc-darken($color-main-background, 7%) !default;
// darker border like inputs or very visible elements
$color-border-dark: nc-darken($color-main-background, 14%) !default;
$border-radius: 3px !default;
$border-radius-large: 10px !default;
// Pill-style button, value is large so big buttons also have correct roundness
$border-radius-pill: 100px !default;

$font-face: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol' !default;

$animation-quick: 100ms;
$animation-slow: 300ms;

// various structure data
$header-height: 50px;
$navigation-width: 300px;
$sidebar-min-width: 300px;
$sidebar-max-width: 500px;
$list-min-width: 200px;
$list-max-width: 300px;

// mobile. Keep in sync with core/js/js.js
$breakpoint-mobile: 1024px;