What color is #180D3A?

#180D3A is a very dark indigo. In RGB it is rgb(24, 13, 58), and in HSL hsl(255, 63%, 14%).

Is #180D3A accessible as text?

On white, #180D3A has a contrast ratio of 18.14:1 (passes WCAG AA for body text); on black it is 1.16:1 (fails). For text placed on #180D3A, use white for the best readability.

What is the closest Tailwind color to #180D3A?

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

What colors go well with #180D3A?

#180D3A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #2F3A0D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #180D3A below.

Is #180D3A good for buttons?

#180D3A works well for buttons and highlights, but use white text on #180D3A — black text only reaches 1.16:1, below the 4.5:1 needed for normal-size labels.

Is #180D3A the same as CSS midnightblue?

No — #180D3A is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#180D3A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #180D3A

Not just a swatch — here's how #180D3A works with other colors. Named schemes with #180D3A in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #180D3A Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #22334A

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 #180D3A Secondary #AFB4B8 Surface #F1F2F0 Support #7F92A7 Anchor #2E3236

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

Vintage Leather Lead · 5 colors

Lead #180D3A Secondary #7E4633 Surface #EDD8C2 Accent #365247 Anchor #582238

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.

Luxury Packaging Feature · 5 colors

Feature #180D3A Anchor #141210 Accent #DB9757 Secondary #282732 Surface #F3ECE3

Navy carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #180D3A Secondary #393848 Support #9D9088 Ink #18140F

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 #180D3A 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 37/100

Cool

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

Softness 20/100

Low

Firm and assertive — carries weight and contrast.

Depth 78/100

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 33/100

Low

A faint retro warmth without tipping into sepia.

Luxury 80/100

Very high

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

Brand distinctiveness 32/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 14/100

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 89/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #180D3A

For UI

For branding

For interior

For fashion

People also use #180D3A with

Prussian Blue Deep Purple British Racing Green Gainsboro Russian Violet

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 18.1:1. Use

Subtle surface Use #C9BFE7 for cards and hover fills. Tint 80

Avoid beside #270D3A — 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 #180D3A 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: #180D3A;
  --color-base-rgb: 24 13 58;
  --color-base-oklch: oklch(20.7% 0.082 288.3);
  --color-50: #F5F2FD;
  --color-100: #E4DDF8;
  --color-200: #C9BDF0;
  --color-300: #A38FE0;
  --color-400: #7F65CD;
  --color-500: #5F43B2;
  --color-600: #4D3A88;
  --color-700: #3B2E61;
  --color-800: #292140;
  --color-900: #1A1627;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  navy: {
    50: '#F5F2FD',
    100: '#E4DDF8',
    200: '#C9BDF0',
    300: '#A38FE0',
    400: '#7F65CD',
    500: '#5F43B2',
    600: '#4D3A88',
    700: '#3B2E61',
    800: '#292140',
    900: '#1A1627',
  },
}

$base: #180D3A;
$base-ink: #FFFFFF;
$base-50: #F5F2FD;
$base-100: #E4DDF8;
$base-200: #C9BDF0;
$base-300: #A38FE0;
$base-400: #7F65CD;
$base-500: #5F43B2;
$base-600: #4D3A88;
$base-700: #3B2E61;
$base-800: #292140;
$base-900: #1A1627;
$base-hover: #140B2F;
$base-subtle: #AD9EDD;

{
    "color": {
        "base": {
            "value": "#180D3A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F2FD",
                "type": "color"
            },
            "100": {
                "value": "#E4DDF8",
                "type": "color"
            },
            "200": {
                "value": "#C9BDF0",
                "type": "color"
            },
            "300": {
                "value": "#A38FE0",
                "type": "color"
            },
            "400": {
                "value": "#7F65CD",
                "type": "color"
            },
            "500": {
                "value": "#5F43B2",
                "type": "color"
            },
            "600": {
                "value": "#4D3A88",
                "type": "color"
            },
            "700": {
                "value": "#3B2E61",
                "type": "color"
            },
            "800": {
                "value": "#292140",
                "type": "color"
            },
            "900": {
                "value": "#1A1627",
                "type": "color"
            }
        }
    }
}