Cyan Cornflower Blue (#188BC2)

/* Background */
.element {
    background-color: #188BC2;
}

/* Text */
.element {
    color: #188BC2;
}

/* Border */
.element {
    border: 1px solid #188BC2;
}

/* Linear gradient to complementary */
.element {
    background: linear-gradient(
        to right,
        #188BC2,
        #F7AF8D
    );
}

/* Radial gradient */
.element {
    background: radial-gradient(
        circle,
        #188BC2,
        #F7AF8D
    );
}

// SCSS variable
$cyan-cornflower-blue: #188BC2;

// With RGB channels (useful for rgba() usage)
$cyan-cornflower-blue-r: 24;
$cyan-cornflower-blue-g: 139;
$cyan-cornflower-blue-b: 194;

// Usage
.element {
    background-color: $cyan-cornflower-blue;
    color: rgba($cyan-cornflower-blue-r, $cyan-cornflower-blue-g, $cyan-cornflower-blue-b, 0.8);
}