What color is #04049D?

#04049D is a dark, vivid blue. In RGB it is rgb(4, 4, 157), and in HSL hsl(240, 95%, 32%).

Is #04049D accessible as text?

On white, #04049D has a contrast ratio of 13.91:1 (passes WCAG AA for body text); on black it is 1.51:1 (fails). For text placed on #04049D, use white for the best readability.

What is the closest Tailwind color to #04049D?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #04049D?

#04049D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #9F9F04. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #04049D below.

Is #04049D good for buttons?

#04049D works well for buttons and highlights, but use white text on #04049D — black text only reaches 1.51:1, below the 4.5:1 needed for normal-size labels.

Is #04049D the same as CSS darkblue?

No — #04049D is not the CSS named color darkblue, but darkblue (#00008B) is the closest CSS named color.

#04049D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #04049D

Not just a swatch — here's how #04049D works with other colors. Named schemes with #04049D in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #04049D Anchor #141210 Accent #ACAE53 Secondary #242933 Surface #F4ECE3

Zaffre 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.

Tech Product Signal · 5 colors

Signal #04049D Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #1B42BA

Zaffre is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Zaffre.

Moody Editorial Color · 5 colors

Color #04049D Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #170055

Zaffre adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Zaffre.

Coastal Morning Lead · 5 colors

Lead #04049D Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #04049D Secondary #435682 Support #9D8F88 Ink #18140F

Zaffre 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 Zaffre carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #04049D 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 9/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 20/100

Low

Firm and assertive — carries weight and contrast.

Depth 74/100

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 13/100

Very low

Clean and current — no dusty, aged cast.

Luxury 64/100

High

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

Brand distinctiveness 83/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 37/100

Low

Workable accent with care around contrast.

Surface fit 19/100

Very low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 61/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #04049D

For UI

For branding

For interior

For fashion

People also use #04049D with

True Blue Indigo Olive Gainsboro Prussian Blue

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 13.9:1. Use

Subtle surface Use #C5C5F4 for cards and hover fills. Tint 80

Avoid beside #38049F — 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 #04049D 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: #04049D;
  --color-base-rgb: 4 4 157;
  --color-base-oklch: oklch(31.8% 0.215 264.9);
  --color-50: #F0F0FE;
  --color-100: #D8D8FD;
  --color-200: #B1B1FC;
  --color-300: #7A7AF5;
  --color-400: #4A4AE8;
  --color-500: #2727CE;
  --color-600: #26269C;
  --color-700: #21216E;
  --color-800: #1A1A47;
  --color-900: #12122B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  zaffre: {
    50: '#F0F0FE',
    100: '#D8D8FD',
    200: '#B1B1FC',
    300: '#7A7AF5',
    400: '#4A4AE8',
    500: '#2727CE',
    600: '#26269C',
    700: '#21216E',
    800: '#1A1A47',
    900: '#12122B',
  },
}

$base: #04049D;
$base-ink: #FFFFFF;
$base-50: #F0F0FE;
$base-100: #D8D8FD;
$base-200: #B1B1FC;
$base-300: #7A7AF5;
$base-400: #4A4AE8;
$base-500: #2727CE;
$base-600: #26269C;
$base-700: #21216E;
$base-800: #1A1A47;
$base-900: #12122B;
$base-hover: #03037F;
$base-subtle: #A5A5F1;

{
    "color": {
        "base": {
            "value": "#04049D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F0FE",
                "type": "color"
            },
            "100": {
                "value": "#D8D8FD",
                "type": "color"
            },
            "200": {
                "value": "#B1B1FC",
                "type": "color"
            },
            "300": {
                "value": "#7A7AF5",
                "type": "color"
            },
            "400": {
                "value": "#4A4AE8",
                "type": "color"
            },
            "500": {
                "value": "#2727CE",
                "type": "color"
            },
            "600": {
                "value": "#26269C",
                "type": "color"
            },
            "700": {
                "value": "#21216E",
                "type": "color"
            },
            "800": {
                "value": "#1A1A47",
                "type": "color"
            },
            "900": {
                "value": "#12122B",
                "type": "color"
            }
        }
    }
}

Palettes built on #04049D

Color Lab

Pairs with #04049D

UI roles & guardrails

In real applications

Scales

Every model

Export