What color is #04091A?

#04091A is a very dark, vivid blue. In RGB it is rgb(4, 9, 26), and in HSL hsl(226, 73%, 6%).

Is #04091A accessible as text?

On white, #04091A has a contrast ratio of 19.83:1 (passes WCAG AA for body text); on black it is 1.06:1 (fails). For text placed on #04091A, use white for the best readability.

What is the closest Tailwind color to #04091A?

The nearest Tailwind CSS token is mauve-950 (#0C090C).

What colors go well with #04091A?

#04091A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #1A1504. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #04091A below.

Is #04091A good for buttons?

#04091A works well for buttons and highlights, but use white text on #04091A — black text only reaches 1.06:1, below the 4.5:1 needed for normal-size labels.

Is #04091A the same as CSS black?

No — #04091A is not the CSS named color black, but black (#000000) is the closest CSS named color.

#04091A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #04091A

Not just a swatch — here's how #04091A works with other colors. Named schemes with #04091A in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #04091A Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

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 #04091A Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A7 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 #04091A Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #1D2536

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 #04091A Secondary #7F4536 Surface #EED7C2 Accent #365246 Anchor #58223A

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 #F8F4EF Accent #04091A Secondary #272A31 Support #9D8F88 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 #04091A 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 41/100

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 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 18/100

Very 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 15/100

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 64/100

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 #04091A

For UI

For branding

For interior

For fashion

People also use #04091A with

Gunmetal Gray Jet Black Graphite 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 19.8:1. Use

Subtle surface Use #B6C2E8 for cards and hover fills. Tint 80

Avoid beside #06041A — 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 #04091A 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: #04091A;
  --color-base-rgb: 4 9 26;
  --color-base-oklch: oklch(14.5% 0.038 265.9);
  --color-50: #F1F4FD;
  --color-100: #DBE2FA;
  --color-200: #B9C6F4;
  --color-300: #889EE7;
  --color-400: #5D79D5;
  --color-500: #3A58BB;
  --color-600: #33498E;
  --color-700: #2A3865;
  --color-800: #1F2742;
  --color-900: #151928;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F1F4FD',
    100: '#DBE2FA',
    200: '#B9C6F4',
    300: '#889EE7',
    400: '#5D79D5',
    500: '#3A58BB',
    600: '#33498E',
    700: '#2A3865',
    800: '#1F2742',
    900: '#151928',
  },
}

$base: #04091A;
$base-ink: #FFFFFF;
$base-50: #F1F4FD;
$base-100: #DBE2FA;
$base-200: #B9C6F4;
$base-300: #889EE7;
$base-400: #5D79D5;
$base-500: #3A58BB;
$base-600: #33498E;
$base-700: #2A3865;
$base-800: #1F2742;
$base-900: #151928;
$base-hover: #030715;
$base-subtle: #8FA2DF;

{
    "color": {
        "base": {
            "value": "#04091A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F4FD",
                "type": "color"
            },
            "100": {
                "value": "#DBE2FA",
                "type": "color"
            },
            "200": {
                "value": "#B9C6F4",
                "type": "color"
            },
            "300": {
                "value": "#889EE7",
                "type": "color"
            },
            "400": {
                "value": "#5D79D5",
                "type": "color"
            },
            "500": {
                "value": "#3A58BB",
                "type": "color"
            },
            "600": {
                "value": "#33498E",
                "type": "color"
            },
            "700": {
                "value": "#2A3865",
                "type": "color"
            },
            "800": {
                "value": "#1F2742",
                "type": "color"
            },
            "900": {
                "value": "#151928",
                "type": "color"
            }
        }
    }
}

Palettes built on #04091A

Color Lab

Pairs with #04091A

UI roles & guardrails

In real applications

Scales

Every model

Export