What color is #040D02?

#040D02 is a very dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(4, 13, 2), and in HSL hsl(109, 73%, 3%).

Is #040D02 accessible as text?

On white, #040D02 has a contrast ratio of 19.74:1 (passes WCAG AA for body text); on black it is 1.06:1 (fails). For text placed on #040D02, use white for the best readability.

What is the closest Tailwind color to #040D02?

The nearest Tailwind CSS token is neutral-950 (#0A0A0A).

What colors go well with #040D02?

As a neutral, #040D02 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 #040D02 the same as CSS black?

No — #040D02 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#040D02 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #040D02

Not just a swatch — here's how #040D02 works with other colors. Named schemes with #040D02 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #040D02 Secondary #4D6B3B Accent #AE6B00 Surface #EFEAD6 Anchor #3D2F21

Jet Black leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.

Vintage Leather Lead · 5 colors

Lead #040D02 Secondary #764D1C Surface #E6DBC0 Accent #3D513F Anchor #5B2323

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 #040D02 Surface #EEE9DC Highlight #F5F1E7 Secondary #B7B09F 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.

Luxury Packaging Feature · 5 colors

Feature #040D02 Anchor #141210 Accent #C1A64B Secondary #242B22 Surface #F2EDE3

Jet Black 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 #F7F4EF Accent #040D02 Secondary #272B26 Support #989286 Ink #17140F

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 #040D02 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 50/100

Neutral

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

Softness 16/100

Very low

Firm and assertive — carries weight and contrast.

Depth 81/100

Very high

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

Naturalness 49/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 22/100

Low

Clean and current — no dusty, aged cast.

Luxury 80/100

High

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

Brand distinctiveness 13/100

Very low

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

UI accent fit 5/100

Very low

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

Surface fit 66/100

High

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

Print safety 93/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #040D02

For UI

For branding

For interior

For fashion

People also use #040D02 with

Sacramento Green Jet Black Platinum Hunter Green

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 19.7:1. Use

Subtle surface Use #BDE8B4 for cards and hover fills. Tint 80

Avoid beside #020D04 — 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 #040D02 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: #040D02;
  --color-base-rgb: 4 13 2;
  --color-base-oklch: oklch(14.4% 0.033 137.9);
  --color-50: #F3FDF1;
  --color-100: #E1FADB;
  --color-200: #C3F4B9;
  --color-300: #9AE788;
  --color-400: #73D55D;
  --color-500: #52BB3A;
  --color-600: #448E33;
  --color-700: #35652A;
  --color-800: #25421F;
  --color-900: #182815;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F3FDF1',
    100: '#E1FADB',
    200: '#C3F4B9',
    300: '#9AE788',
    400: '#73D55D',
    500: '#52BB3A',
    600: '#448E33',
    700: '#35652A',
    800: '#25421F',
    900: '#182815',
  },
}

$base: #040D02;
$base-ink: #FFFFFF;
$base-50: #F3FDF1;
$base-100: #E1FADB;
$base-200: #C3F4B9;
$base-300: #9AE788;
$base-400: #73D55D;
$base-500: #52BB3A;
$base-600: #448E33;
$base-700: #35652A;
$base-800: #25421F;
$base-900: #182815;
$base-hover: #030B02;
$base-subtle: #9BDE8C;

{
    "color": {
        "base": {
            "value": "#040D02",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FDF1",
                "type": "color"
            },
            "100": {
                "value": "#E1FADB",
                "type": "color"
            },
            "200": {
                "value": "#C3F4B9",
                "type": "color"
            },
            "300": {
                "value": "#9AE788",
                "type": "color"
            },
            "400": {
                "value": "#73D55D",
                "type": "color"
            },
            "500": {
                "value": "#52BB3A",
                "type": "color"
            },
            "600": {
                "value": "#448E33",
                "type": "color"
            },
            "700": {
                "value": "#35652A",
                "type": "color"
            },
            "800": {
                "value": "#25421F",
                "type": "color"
            },
            "900": {
                "value": "#182815",
                "type": "color"
            }
        }
    }
}

Palettes built on #040D02

Color Lab

Pairs with #040D02

UI roles & guardrails

In real applications

Scales

Every model

Export