What color is #02181B?

#02181B is a very dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(2, 24, 27), and in HSL hsl(187, 86%, 6%).

Is #02181B accessible as text?

On white, #02181B has a contrast ratio of 18.28:1 (passes WCAG AA for body text); on black it is 1.15:1 (fails). For text placed on #02181B, use white for the best readability.

What is the closest Tailwind color to #02181B?

The nearest Tailwind CSS token is neutral-900 (#171717).

What colors go well with #02181B?

As a neutral, #02181B pairs cleanly with white, off-white and light grays for text, and sits under accent hues like blue, violet, emerald or warm orange — use it as a dark surface or high-contrast base and let the accent carry the color.

Is #02181B the same as CSS midnightblue?

No — #02181B is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#02181B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #02181B

Not just a swatch — here's how #02181B works with other colors. Named schemes with #02181B in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #02181B Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

Graphite opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Nordic Calm Accent · 5 colors

Accent #02181B Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

Graphite keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Tech Product Signal · 5 colors

Signal #02181B Surface #14161A Highlight #F4F6F8 Secondary #596671 Accent #203538

Graphite is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Graphite.

Vintage Leather Lead · 5 colors

Lead #02181B Secondary #715117 Surface #E3DCC0 Accent #395143 Anchor #56233F

Graphite plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #02181B Secondary #303839 Support #979286 Ink #16140F

Graphite 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 Graphite carrying the quiet middle.

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Color Lab

How #02181B 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.

Warmth 42/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 21/100

Low

Firm and assertive — carries weight and contrast.

Depth 76/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 3/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 19/100

Very low

Clean and current — no dusty, aged cast.

Luxury 76/100

High

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 12/100

Very low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 8/100

Very low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 63/100

High

Calm enough for large fills — backgrounds, cards, sections.

Print safety 92/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #02181B

For UI

For branding

For interior

For fashion

People also use #02181B with

British Racing Green Jet Black Platinum Dark Slate Gray

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

Body text Passes on white at 16px and above. Pass

Large display Fine for headings 24px+ on white. Pass

Background Pair with white text at 18.3:1. Use

Subtle surface Use #B1E6ED for cards and hover fills. Tint 80

Avoid beside #02111C — the hue gap is too small to read as intentional. Clash

In real applications

Not a swatch to memorise — a color to build with. Here is #02181B at work across the surfaces designers actually ship.

Website / UI

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Dashboard

Revenue

$48.2k ▲ 12%

Brand

AVELINE

Studio

Poster

Nov 14 · 8PM

NIGHT
MARKET

Packaging

BLOOM

Botanical Wash

250 ml

Interior

Every model

Export

:root {
  --color-base: #02181B;
  --color-base-rgb: 2 24 27;
  --color-base-oklch: oklch(19.2% 0.030 206.7);
  --color-50: #F0FDFE;
  --color-100: #D8F9FD;
  --color-200: #B3F1F9;
  --color-300: #80E2EF;
  --color-400: #52D0E0;
  --color-500: #2FB4C6;
  --color-600: #2B8A96;
  --color-700: #25626A;
  --color-800: #1C4045;
  --color-900: #13282A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  graphite: {
    50: '#F0FDFE',
    100: '#D8F9FD',
    200: '#B3F1F9',
    300: '#80E2EF',
    400: '#52D0E0',
    500: '#2FB4C6',
    600: '#2B8A96',
    700: '#25626A',
    800: '#1C4045',
    900: '#13282A',
  },
}

$base: #02181B;
$base-ink: #FFFFFF;
$base-50: #F0FDFE;
$base-100: #D8F9FD;
$base-200: #B3F1F9;
$base-300: #80E2EF;
$base-400: #52D0E0;
$base-500: #2FB4C6;
$base-600: #2B8A96;
$base-700: #25626A;
$base-800: #1C4045;
$base-900: #13282A;
$base-hover: #021417;
$base-subtle: #88DBE6;

{
    "color": {
        "base": {
            "value": "#02181B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FDFE",
                "type": "color"
            },
            "100": {
                "value": "#D8F9FD",
                "type": "color"
            },
            "200": {
                "value": "#B3F1F9",
                "type": "color"
            },
            "300": {
                "value": "#80E2EF",
                "type": "color"
            },
            "400": {
                "value": "#52D0E0",
                "type": "color"
            },
            "500": {
                "value": "#2FB4C6",
                "type": "color"
            },
            "600": {
                "value": "#2B8A96",
                "type": "color"
            },
            "700": {
                "value": "#25626A",
                "type": "color"
            },
            "800": {
                "value": "#1C4045",
                "type": "color"
            },
            "900": {
                "value": "#13282A",
                "type": "color"
            }
        }
    }
}

Palettes built on #02181B

Color Lab

Pairs with #02181B

UI roles & guardrails

In real applications

Scales

Every model

Export