What color is #181323?

#181323 is a very dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(24, 19, 35), and in HSL hsl(259, 30%, 11%).

Is #181323 accessible as text?

On white, #181323 has a contrast ratio of 18.16:1 (passes WCAG AA for body text); on black it is 1.16:1 (fails). For text placed on #181323, use white for the best readability.

What is the closest Tailwind color to #181323?

The nearest Tailwind CSS token is gray-900 (#101828).

What colors go well with #181323?

As a neutral, #181323 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 #181323 the same as CSS midnightblue?

No — #181323 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.

#181323 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #181323

Not just a swatch — here's how #181323 works with other colors. Named schemes with #181323 in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #181323 Secondary #7E4632 Surface #EDD8C2 Accent #355248 Anchor #582237

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.

Japanese Sand Base · 5 colors

Base #181323 Surface #F2E8DD Highlight #F8F0E7 Secondary #BDADA1 Ink #2C2724

Graphite sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Luxury Packaging Feature · 5 colors

Feature #181323 Anchor #141210 Accent #DA9856 Secondary #2A2732 Surface #F3ECE3

Graphite 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 #181323 Secondary #39373D Support #9C9088 Ink #18140F

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.

Berry & Cream Lead · 5 colors

Lead #181323 Surface #F5E6D7 Anchor #5C2140 Accent #E5C2C7 Secondary #332B2F

Graphite sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Build a working theme in the generator →

Color Lab

How #181323 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 46/100

Neutral

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

Softness 22/100

Low

Firm and assertive — carries weight and contrast.

Depth 75/100

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 24/100

Low

Clean and current — no dusty, aged cast.

Luxury 75/100

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 10/100

Very low

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

Surface fit 62/100

High

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

Print safety 96/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #181323

For UI

For branding

For interior

For fashion

People also use #181323 with

Gunmetal Gray Graphite 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 18.2:1. Use

Subtle surface Use #CEC8DB for cards and hover fills. Tint 80

Avoid beside #1F1424 — 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 #181323 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #181323;
  --color-base-rgb: 24 19 35;
  --color-base-oklch: oklch(20.1% 0.032 297.8);
  --color-50: #F6F5FA;
  --color-100: #E8E4F1;
  --color-200: #D2CAE2;
  --color-300: #B1A4CB;
  --color-400: #9080B2;
  --color-500: #716095;
  --color-600: #5A4E74;
  --color-700: #433B54;
  --color-800: #2E2938;
  --color-900: #1D1B23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  graphite: {
    50: '#F6F5FA',
    100: '#E8E4F1',
    200: '#D2CAE2',
    300: '#B1A4CB',
    400: '#9080B2',
    500: '#716095',
    600: '#5A4E74',
    700: '#433B54',
    800: '#2E2938',
    900: '#1D1B23',
  },
}

$base: #181323;
$base-ink: #FFFFFF;
$base-50: #F6F5FA;
$base-100: #E8E4F1;
$base-200: #D2CAE2;
$base-300: #B1A4CB;
$base-400: #9080B2;
$base-500: #716095;
$base-600: #5A4E74;
$base-700: #433B54;
$base-800: #2E2938;
$base-900: #1D1B23;
$base-hover: #14101D;
$base-subtle: #B5ABCA;

{
    "color": {
        "base": {
            "value": "#181323",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F5FA",
                "type": "color"
            },
            "100": {
                "value": "#E8E4F1",
                "type": "color"
            },
            "200": {
                "value": "#D2CAE2",
                "type": "color"
            },
            "300": {
                "value": "#B1A4CB",
                "type": "color"
            },
            "400": {
                "value": "#9080B2",
                "type": "color"
            },
            "500": {
                "value": "#716095",
                "type": "color"
            },
            "600": {
                "value": "#5A4E74",
                "type": "color"
            },
            "700": {
                "value": "#433B54",
                "type": "color"
            },
            "800": {
                "value": "#2E2938",
                "type": "color"
            },
            "900": {
                "value": "#1D1B23",
                "type": "color"
            }
        }
    }
}

Palettes built on #181323

Color Lab

Pairs with #181323

UI roles & guardrails

In real applications

Scales

Every model

Export