What color is #040D16?

#040D16 is a very dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(4, 13, 22), and in HSL hsl(210, 69%, 5%).

Is #040D16 accessible as text?

On white, #040D16 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 #040D16, use white for the best readability.

What is the closest Tailwind color to #040D16?

The nearest Tailwind CSS token is zinc-950 (#09090B).

What colors go well with #040D16?

As a neutral, #040D16 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 #040D16 the same as CSS black?

No — #040D16 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#040D16 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #040D16

Not just a swatch — here's how #040D16 works with other colors. Named schemes with #040D16 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #040D16 Accent #A5C4C0 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Jet Black opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Nordic Calm Accent · 5 colors

Accent #040D16 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Jet Black keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Tech Product Signal · 5 colors

Signal #040D16 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #1E2932

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 #040D16 Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233C

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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #040D16 Secondary #292D31 Support #969386 Ink #16140F

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 #040D16 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 43/100

Neutral

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

Softness 18/100

Very low

Firm and assertive — carries weight and contrast.

Depth 79/100

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 16/100

Very low

Clean and current — no dusty, aged cast.

Luxury 78/100

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 5/100

Very low

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

Surface fit 67/100

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 #040D16

For UI

For branding

For interior

For fashion

People also use #040D16 with

Bottle Green Jet Black Gainsboro Charcoal

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 19.5:1. Use

Subtle surface Use #B6CFE7 for cards and hover fills. Tint 80

Avoid beside #040716 — 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 #040D16 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: #040D16;
  --color-base-rgb: 4 13 22;
  --color-base-oklch: oklch(15.4% 0.025 245.9);
  --color-50: #F2F7FD;
  --color-100: #DCEBF9;
  --color-200: #BAD6F2;
  --color-300: #8BB8E4;
  --color-400: #6099D2;
  --color-500: #3E7AB7;
  --color-600: #36618C;
  --color-700: #2C4763;
  --color-800: #203041;
  --color-900: #151F28;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F2F7FD',
    100: '#DCEBF9',
    200: '#BAD6F2',
    300: '#8BB8E4',
    400: '#6099D2',
    500: '#3E7AB7',
    600: '#36618C',
    700: '#2C4763',
    800: '#203041',
    900: '#151F28',
  },
}

$base: #040D16;
$base-ink: #FFFFFF;
$base-50: #F2F7FD;
$base-100: #DCEBF9;
$base-200: #BAD6F2;
$base-300: #8BB8E4;
$base-400: #6099D2;
$base-500: #3E7AB7;
$base-600: #36618C;
$base-700: #2C4763;
$base-800: #203041;
$base-900: #151F28;
$base-hover: #030A11;
$base-subtle: #90B6DC;

{
    "color": {
        "base": {
            "value": "#040D16",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F7FD",
                "type": "color"
            },
            "100": {
                "value": "#DCEBF9",
                "type": "color"
            },
            "200": {
                "value": "#BAD6F2",
                "type": "color"
            },
            "300": {
                "value": "#8BB8E4",
                "type": "color"
            },
            "400": {
                "value": "#6099D2",
                "type": "color"
            },
            "500": {
                "value": "#3E7AB7",
                "type": "color"
            },
            "600": {
                "value": "#36618C",
                "type": "color"
            },
            "700": {
                "value": "#2C4763",
                "type": "color"
            },
            "800": {
                "value": "#203041",
                "type": "color"
            },
            "900": {
                "value": "#151F28",
                "type": "color"
            }
        }
    }
}

Palettes built on #040D16

Color Lab

Pairs with #040D16

UI roles & guardrails

In real applications

Scales

Every model

Export