#30554F is a muted, temperate cyan. On the Color Lab it reads clean and engineered, quietly premium. It reproduces cleanly in print.
Not just a swatch — here's how #30554F works with other colors. Named schemes with #30554F in its natural role, and a note on why the supporting colors balance it.
Dark Slate Gray opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.
Dark Slate Gray keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.
Dark Slate Gray plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.
Dark Slate Gray anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.
Dark Slate Gray is the single accent in this high-contrast editorial system — set on near-white paper against near-black ink, with a warm grey and a desaturated tint of Dark Slate Gray carrying the quiet middle.
How #30554F actually behaves in design work — read from its OKLCH lightness, chroma and hue, not just its raw numbers. Ten signals to help you decide where this color earns its place.
Not a swatch to memorise — a color to build with. Here is #30554F at work across the surfaces designers actually ship.
:root {
--color-base: #30554F;
--color-base-rgb: 48 85 79;
--color-base-oklch: oklch(42.0% 0.044 182.6);
--color-50: #F5FAF9;
--color-100: #E5F1EF;
--color-200: #CBE2DE;
--color-300: #A6CAC4;
--color-400: #82B0A8;
--color-500: #62938B;
--color-600: #4F726D;
--color-700: #3C534F;
--color-800: #2A3735;
--color-900: #1B2221;
--color-on-base: #FFFFFF;
}
// tailwind.config.js
colors: {
dark-slate-gray: {
50: '#F5FAF9',
100: '#E5F1EF',
200: '#CBE2DE',
300: '#A6CAC4',
400: '#82B0A8',
500: '#62938B',
600: '#4F726D',
700: '#3C534F',
800: '#2A3735',
900: '#1B2221',
},
}
$base: #30554F; $base-ink: #FFFFFF; $base-50: #F5FAF9; $base-100: #E5F1EF; $base-200: #CBE2DE; $base-300: #A6CAC4; $base-400: #82B0A8; $base-500: #62938B; $base-600: #4F726D; $base-700: #3C534F; $base-800: #2A3735; $base-900: #1B2221; $base-hover: #26443F; $base-subtle: #BAD2CE;
{
"color": {
"base": {
"value": "#30554F",
"type": "color"
},
"onBase": {
"value": "#FFFFFF",
"type": "color"
},
"scale": {
"50": {
"value": "#F5FAF9",
"type": "color"
},
"100": {
"value": "#E5F1EF",
"type": "color"
},
"200": {
"value": "#CBE2DE",
"type": "color"
},
"300": {
"value": "#A6CAC4",
"type": "color"
},
"400": {
"value": "#82B0A8",
"type": "color"
},
"500": {
"value": "#62938B",
"type": "color"
},
"600": {
"value": "#4F726D",
"type": "color"
},
"700": {
"value": "#3C534F",
"type": "color"
},
"800": {
"value": "#2A3735",
"type": "color"
},
"900": {
"value": "#1B2221",
"type": "color"
}
}
}
}