What color is #040A02?

#040A02 is a very dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(4, 10, 2), and in HSL hsl(105, 67%, 2%).

Is #040A02 accessible as text?

On white, #040A02 has a contrast ratio of 20.01:1 (passes WCAG AA for body text); on black it is 1.05:1 (fails). For text placed on #040A02, use white for the best readability.

What is the closest Tailwind color to #040A02?

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

What colors go well with #040A02?

As a neutral, #040A02 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 #040A02 the same as CSS black?

No — #040A02 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#040A02 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #040A02

Not just a swatch — here's how #040A02 works with other colors. Named schemes with #040A02 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #040A02 Secondary #4E6B3A 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 #040A02 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 #040A02 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 #040A02 Anchor #141210 Accent #C2A64B Secondary #252B21 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 #040A02 Secondary #252824 Support #999286 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.

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Color Lab

How #040A02 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 15/100

Very low

Firm and assertive — carries weight and contrast.

Depth 82/100

Very high

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

Naturalness 43/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 20/100

Low

Clean and current — no dusty, aged cast.

Luxury 80/100

High

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

Brand distinctiveness 10/100

Very low

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

UI accent fit 4/100

Very low

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

Surface fit 68/100

High

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

Print safety 94/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #040A02

For UI

For branding

For interior

For fashion

People also use #040A02 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 20.0:1. Use

Subtle surface Use #C1E5B5 for cards and hover fills. Tint 80

Avoid beside #020902 — 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 #040A02 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: #040A02;
  --color-base-rgb: 4 10 2;
  --color-base-oklch: oklch(13.3% 0.027 135.8);
  --color-50: #F5FDF2;
  --color-100: #E3F9DC;
  --color-200: #C9F1BB;
  --color-300: #A2E38C;
  --color-400: #7DD062;
  --color-500: #5DB53F;
  --color-600: #4C8B37;
  --color-700: #3A622C;
  --color-800: #284120;
  --color-900: #1A2816;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F5FDF2',
    100: '#E3F9DC',
    200: '#C9F1BB',
    300: '#A2E38C',
    400: '#7DD062',
    500: '#5DB53F',
    600: '#4C8B37',
    700: '#3A622C',
    800: '#284120',
    900: '#1A2816',
  },
}

$base: #040A02;
$base-ink: #FFFFFF;
$base-50: #F5FDF2;
$base-100: #E3F9DC;
$base-200: #C9F1BB;
$base-300: #A2E38C;
$base-400: #7DD062;
$base-500: #5DB53F;
$base-600: #4C8B37;
$base-700: #3A622C;
$base-800: #284120;
$base-900: #1A2816;
$base-hover: #030701;
$base-subtle: #A1DA8E;

{
    "color": {
        "base": {
            "value": "#040A02",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5FDF2",
                "type": "color"
            },
            "100": {
                "value": "#E3F9DC",
                "type": "color"
            },
            "200": {
                "value": "#C9F1BB",
                "type": "color"
            },
            "300": {
                "value": "#A2E38C",
                "type": "color"
            },
            "400": {
                "value": "#7DD062",
                "type": "color"
            },
            "500": {
                "value": "#5DB53F",
                "type": "color"
            },
            "600": {
                "value": "#4C8B37",
                "type": "color"
            },
            "700": {
                "value": "#3A622C",
                "type": "color"
            },
            "800": {
                "value": "#284120",
                "type": "color"
            },
            "900": {
                "value": "#1A2816",
                "type": "color"
            }
        }
    }
}

Palettes built on #040A02

Color Lab

Pairs with #040A02

UI roles & guardrails

In real applications

Scales

Every model

Export