What color is #040203?

#040203 is a very dark low-chroma warm gray with a subtle warm cast. In RGB it is rgb(4, 2, 3), and in HSL hsl(330, 33%, 1%).

Is #040203 accessible as text?

On white, #040203 has a contrast ratio of 20.69:1 (passes WCAG AA for body text); on black it is 1.02:1 (fails). For text placed on #040203, use white for the best readability.

What is the closest Tailwind color to #040203?

The nearest Tailwind CSS token is gray-950 (#030712).

What colors go well with #040203?

As a neutral, #040203 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 #040203 the same as CSS black?

No — #040203 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#040203 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #040203

Not just a swatch — here's how #040203 works with other colors. Named schemes with #040203 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #040203 Surface #14161A Highlight #F4F6F8 Secondary #5D6573 Accent #1C171A

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

Vintage Leather Lead · 5 colors

Lead #040203 Secondary #7D472C Surface #EBD8C1 Accent #454F38 Anchor #5A2232

Jet Black 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 #040203 Surface #F1E8DC Highlight #F7F1E7 Secondary #BCAEA0 Ink #2B2723

Jet Black 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.

Berry & Cream Lead · 5 colors

Lead #040203 Surface #F4E6D7 Anchor #5E203B Accent #E6C2C4 Secondary #332B2E

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

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #040203 Secondary #1F1D1E Support #9C9087 Ink #18140F

Jet Black 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 Jet Black carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #040203 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 51/100

Neutral

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

Softness 11/100

Very low

Firm and assertive — carries weight and contrast.

Depth 84/100

Very 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 16/100

Very low

Clean and current — no dusty, aged cast.

Luxury 81/100

Very high

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

Brand distinctiveness 4/100

Very low

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

UI accent fit 2/100

Very low

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

Surface fit 76/100

High

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

Print safety 99/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #040203

For UI

For branding

For interior

For fashion

People also use #040203 with

Graphite Jet Black Gainsboro Eggplant

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 20.7:1. Use

Subtle surface Use #D9C1CD for cards and hover fills. Tint 80

Avoid beside #030202 — 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 #040203 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: #040203;
  --color-base-rgb: 4 2 3;
  --color-base-oklch: oklch(9.2% 0.010 345.0);
  --color-50: #FAF5F7;
  --color-100: #F2E3EB;
  --color-200: #E4C9D6;
  --color-300: #CDA2B8;
  --color-400: #B47E99;
  --color-500: #975D7A;
  --color-600: #754C61;
  --color-700: #553A47;
  --color-800: #382930;
  --color-900: #231A1F;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#FAF5F7',
    100: '#F2E3EB',
    200: '#E4C9D6',
    300: '#CDA2B8',
    400: '#B47E99',
    500: '#975D7A',
    600: '#754C61',
    700: '#553A47',
    800: '#382930',
    900: '#231A1F',
  },
}

$base: #040203;
$base-ink: #FFFFFF;
$base-50: #FAF5F7;
$base-100: #F2E3EB;
$base-200: #E4C9D6;
$base-300: #CDA2B8;
$base-400: #B47E99;
$base-500: #975D7A;
$base-600: #754C61;
$base-700: #553A47;
$base-800: #382930;
$base-900: #231A1F;
$base-hover: #030102;
$base-subtle: #C6A0B3;

{
    "color": {
        "base": {
            "value": "#040203",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FAF5F7",
                "type": "color"
            },
            "100": {
                "value": "#F2E3EB",
                "type": "color"
            },
            "200": {
                "value": "#E4C9D6",
                "type": "color"
            },
            "300": {
                "value": "#CDA2B8",
                "type": "color"
            },
            "400": {
                "value": "#B47E99",
                "type": "color"
            },
            "500": {
                "value": "#975D7A",
                "type": "color"
            },
            "600": {
                "value": "#754C61",
                "type": "color"
            },
            "700": {
                "value": "#553A47",
                "type": "color"
            },
            "800": {
                "value": "#382930",
                "type": "color"
            },
            "900": {
                "value": "#231A1F",
                "type": "color"
            }
        }
    }
}

Palettes built on #040203

Color Lab

Pairs with #040203

UI roles & guardrails

In real applications

Scales

Every model

Export