What color is #040F01?

#040F01 is a very dark, vivid green. In RGB it is rgb(4, 15, 1), and in HSL hsl(107, 88%, 3%).

Is #040F01 accessible as text?

On white, #040F01 has a contrast ratio of 19.55:1 (passes WCAG AA for body text); on black it is 1.07:1 (fails). For text placed on #040F01, use white for the best readability.

What is the closest Tailwind color to #040F01?

The nearest Tailwind CSS token is olive-950 (#0C0C09).

What colors go well with #040F01?

#040F01 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #0B010E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #040F01 below.

Is #040F01 good for buttons?

#040F01 works well for buttons and highlights, but use white text on #040F01 — black text only reaches 1.07:1, below the 4.5:1 needed for normal-size labels.

Is #040F01 the same as CSS black?

No — #040F01 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#040F01 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #040F01

Not just a swatch — here's how #040F01 works with other colors. Named schemes with #040F01 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #040F01 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 #040F01 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 #040F01 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 #040F01 Anchor #141210 Accent #C2A64B 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 #040F01 Secondary #282D26 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 #040F01 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 17/100

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 58/100

Moderate

Organic, earthy character — at home in wellness, food and craft brands.

Vintage feel 24/100

Low

Clean and current — no dusty, aged cast.

Luxury 80/100

Very high

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

Brand distinctiveness 16/100

Very low

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

UI accent fit 6/100

Very low

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

Surface fit 63/100

High

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

Print safety 91/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #040F01

For UI

For branding

For interior

For fashion

People also use #040F01 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 19.6:1. Use

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

Avoid beside #010E02 — 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 #040F01 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: #040F01;
  --color-base-rgb: 4 15 1;
  --color-base-oklch: oklch(15.1% 0.040 136.6);
  --color-50: #F3FEF0;
  --color-100: #E0FDD8;
  --color-200: #C2FAB2;
  --color-300: #97F07F;
  --color-400: #70E250;
  --color-500: #4FC82D;
  --color-600: #42982A;
  --color-700: #336B24;
  --color-800: #24461B;
  --color-900: #182B13;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F3FEF0',
    100: '#E0FDD8',
    200: '#C2FAB2',
    300: '#97F07F',
    400: '#70E250',
    500: '#4FC82D',
    600: '#42982A',
    700: '#336B24',
    800: '#24461B',
    900: '#182B13',
  },
}

$base: #040F01;
$base-ink: #FFFFFF;
$base-50: #F3FEF0;
$base-100: #E0FDD8;
$base-200: #C2FAB2;
$base-300: #97F07F;
$base-400: #70E250;
$base-500: #4FC82D;
$base-600: #42982A;
$base-700: #336B24;
$base-800: #24461B;
$base-900: #182B13;
$base-hover: #030C01;
$base-subtle: #99E683;

{
    "color": {
        "base": {
            "value": "#040F01",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FEF0",
                "type": "color"
            },
            "100": {
                "value": "#E0FDD8",
                "type": "color"
            },
            "200": {
                "value": "#C2FAB2",
                "type": "color"
            },
            "300": {
                "value": "#97F07F",
                "type": "color"
            },
            "400": {
                "value": "#70E250",
                "type": "color"
            },
            "500": {
                "value": "#4FC82D",
                "type": "color"
            },
            "600": {
                "value": "#42982A",
                "type": "color"
            },
            "700": {
                "value": "#336B24",
                "type": "color"
            },
            "800": {
                "value": "#24461B",
                "type": "color"
            },
            "900": {
                "value": "#182B13",
                "type": "color"
            }
        }
    }
}

Palettes built on #040F01

Color Lab

Pairs with #040F01

UI roles & guardrails

In real applications

Scales

Every model

Export