What color is #02183E?

#02183E is a very dark, vivid blue. In RGB it is rgb(2, 24, 62), and in HSL hsl(218, 94%, 13%).

Is #02183E accessible as text?

On white, #02183E has a contrast ratio of 17.46:1 (passes WCAG AA for body text); on black it is 1.20:1 (fails). For text placed on #02183E, use white for the best readability.

What is the closest Tailwind color to #02183E?

The nearest Tailwind CSS token is indigo-950 (#1E1A4D).

What colors go well with #02183E?

#02183E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #402902. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #02183E below.

Is #02183E good for buttons?

#02183E works well for buttons and highlights, but use white text on #02183E — black text only reaches 1.20:1, below the 4.5:1 needed for normal-size labels.

Is #02183E the same as CSS midnightblue?

No — #02183E is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#02183E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #02183E

Not just a swatch — here's how #02183E works with other colors. Named schemes with #02183E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #02183E Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Navy 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 #02183E Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A6 Anchor #2E3236

Navy 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 #02183E Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #21385C

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

Vintage Leather Lead · 5 colors

Lead #02183E Secondary #7F4536 Surface #E1DDC1 Accent #375246 Anchor #57223A

Navy 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 #02183E Secondary #343D4C Support #9D8F89 Ink #16140F

Navy 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 Navy carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #02183E 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 30/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

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 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 30/100

Low

A faint retro warmth without tipping into sepia.

Luxury 79/100

High

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

Brand distinctiveness 30/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 16/100

Very low

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

Surface fit 47/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 85/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #02183E

For UI

For branding

For interior

For fashion

People also use #02183E with

Dark Slate Gray Navy Bistre Gainsboro Charcoal

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 17.5:1. Use

Subtle surface Use #B5CBF1 for cards and hover fills. Tint 80

Avoid beside #020440 — 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 #02183E 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: #02183E;
  --color-base-rgb: 2 24 62;
  --color-base-oklch: oklch(21.9% 0.079 259.3);
  --color-50: #F0F5FE;
  --color-100: #D8E6FD;
  --color-200: #B1CCFC;
  --color-300: #7BA7F4;
  --color-400: #4B84E7;
  --color-500: #2864CD;
  --color-600: #26519B;
  --color-700: #213D6D;
  --color-800: #1A2A47;
  --color-900: #121B2B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  navy: {
    50: '#F0F5FE',
    100: '#D8E6FD',
    200: '#B1CCFC',
    300: '#7BA7F4',
    400: '#4B84E7',
    500: '#2864CD',
    600: '#26519B',
    700: '#213D6D',
    800: '#1A2A47',
    900: '#121B2B',
  },
}

$base: #02183E;
$base-ink: #FFFFFF;
$base-50: #F0F5FE;
$base-100: #D8E6FD;
$base-200: #B1CCFC;
$base-300: #7BA7F4;
$base-400: #4B84E7;
$base-500: #2864CD;
$base-600: #26519B;
$base-700: #213D6D;
$base-800: #1A2A47;
$base-900: #121B2B;
$base-hover: #021433;
$base-subtle: #8DB0EC;

{
    "color": {
        "base": {
            "value": "#02183E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F5FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E6FD",
                "type": "color"
            },
            "200": {
                "value": "#B1CCFC",
                "type": "color"
            },
            "300": {
                "value": "#7BA7F4",
                "type": "color"
            },
            "400": {
                "value": "#4B84E7",
                "type": "color"
            },
            "500": {
                "value": "#2864CD",
                "type": "color"
            },
            "600": {
                "value": "#26519B",
                "type": "color"
            },
            "700": {
                "value": "#213D6D",
                "type": "color"
            },
            "800": {
                "value": "#1A2A47",
                "type": "color"
            },
            "900": {
                "value": "#121B2B",
                "type": "color"
            }
        }
    }
}