What color is #040E39?

#040E39 is a very dark, vivid blue. In RGB it is rgb(4, 14, 57), and in HSL hsl(229, 87%, 12%).

Is #040E39 accessible as text?

On white, #040E39 has a contrast ratio of 18.63:1 (passes WCAG AA for body text); on black it is 1.13:1 (fails). For text placed on #040E39, use white for the best readability.

What is the closest Tailwind color to #040E39?

The nearest Tailwind CSS token is indigo-950 (#1E1A4D).

What colors go well with #040E39?

#040E39 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #392F04. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #040E39 below.

Is #040E39 good for buttons?

#040E39 works well for buttons and highlights, but use white text on #040E39 — black text only reaches 1.13:1, below the 4.5:1 needed for normal-size labels.

Is #040E39 the same as CSS midnightblue?

No — #040E39 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#040E39 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #040E39

Not just a swatch — here's how #040E39 works with other colors. Named schemes with #040E39 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #040E39 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Navy 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 #040E39 Secondary #AEB4B8 Surface #F1F2F0 Support #7D92A7 Anchor #2E3236

Navy 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 #040E39 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #1E2E57

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

Vintage Leather Lead · 5 colors

Lead #040E39 Secondary #7F4536 Surface #EED7C2 Accent #365246 Anchor #58223A

Navy 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 #040E39 Secondary #2E3545 Support #9D8F88 Ink #18140F

Navy 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 Navy carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #040E39 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 30/100

Cool

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

Softness 19/100

Very low

Firm and assertive — carries weight and contrast.

Depth 80/100

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 29/100

Low

A faint retro warmth without tipping into sepia.

Luxury 82/100

Very high

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

Brand distinctiveness 33/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 12/100

Very low

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

Surface fit 47/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 85/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #040E39

For UI

For branding

For interior

For fashion

People also use #040E39 with

Charcoal Deep Purple Bistre Gainsboro Gunmetal Gray

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 18.6:1. Use

Subtle surface Use #B6C0EE for cards and hover fills. Tint 80

Avoid beside #0C0439 — 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 #040E39 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: #040E39;
  --color-base-rgb: 4 14 57;
  --color-base-oklch: oklch(19.1% 0.085 266.2);
  --color-50: #F0F3FE;
  --color-100: #D8DFFD;
  --color-200: #B3C0FA;
  --color-300: #7F94F0;
  --color-400: #516BE1;
  --color-500: #2E4AC7;
  --color-600: #2B3F97;
  --color-700: #24316B;
  --color-800: #1C2345;
  --color-900: #13172A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  navy: {
    50: '#F0F3FE',
    100: '#D8DFFD',
    200: '#B3C0FA',
    300: '#7F94F0',
    400: '#516BE1',
    500: '#2E4AC7',
    600: '#2B3F97',
    700: '#24316B',
    800: '#1C2345',
    900: '#13172A',
  },
}

$base: #040E39;
$base-ink: #FFFFFF;
$base-50: #F0F3FE;
$base-100: #D8DFFD;
$base-200: #B3C0FA;
$base-300: #7F94F0;
$base-400: #516BE1;
$base-500: #2E4AC7;
$base-600: #2B3F97;
$base-700: #24316B;
$base-800: #1C2345;
$base-900: #13172A;
$base-hover: #030B2E;
$base-subtle: #8F9FE8;

{
    "color": {
        "base": {
            "value": "#040E39",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F3FE",
                "type": "color"
            },
            "100": {
                "value": "#D8DFFD",
                "type": "color"
            },
            "200": {
                "value": "#B3C0FA",
                "type": "color"
            },
            "300": {
                "value": "#7F94F0",
                "type": "color"
            },
            "400": {
                "value": "#516BE1",
                "type": "color"
            },
            "500": {
                "value": "#2E4AC7",
                "type": "color"
            },
            "600": {
                "value": "#2B3F97",
                "type": "color"
            },
            "700": {
                "value": "#24316B",
                "type": "color"
            },
            "800": {
                "value": "#1C2345",
                "type": "color"
            },
            "900": {
                "value": "#13172A",
                "type": "color"
            }
        }
    }
}

Palettes built on #040E39

Color Lab

Pairs with #040E39

UI roles & guardrails

In real applications

Scales

Every model

Export