What color is #040F34?

#040F34 is a very dark, vivid blue. In RGB it is rgb(4, 15, 52), and in HSL hsl(226, 86%, 11%).

Is #040F34 accessible as text?

On white, #040F34 has a contrast ratio of 18.70:1 (passes WCAG AA for body text); on black it is 1.12:1 (fails). For text placed on #040F34, use white for the best readability.

What is the closest Tailwind color to #040F34?

The nearest Tailwind CSS token is mauve-900 (#1D161E).

What colors go well with #040F34?

#040F34 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #342904. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #040F34 below.

Is #040F34 good for buttons?

#040F34 works well for buttons and highlights, but use white text on #040F34 — black text only reaches 1.12:1, below the 4.5:1 needed for normal-size labels.

Is #040F34 the same as CSS midnightblue?

No — #040F34 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#040F34 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #040F34

Not just a swatch — here's how #040F34 works with other colors. Named schemes with #040F34 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #040F34 Accent #A5C4C2 Surface #DDDBBF 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 #040F34 Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A7 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 #040F34 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #1F2E52

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 #040F34 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 #040F34 Secondary #2E3543 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 #040F34 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 32/100

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 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 27/100

Low

A faint retro warmth without tipping into sepia.

Luxury 81/100

Very high

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

Brand distinctiveness 29/100

Low

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

UI accent fit 11/100

Very low

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

Surface fit 50/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 86/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #040F34

For UI

For branding

For interior

For fashion

People also use #040F34 with

Charcoal Deep Purple Bistre Gainsboro

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 18.7:1. Use

Subtle surface Use #B6C3EE for cards and hover fills. Tint 80

Avoid beside #090434 — 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 #040F34 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: #040F34;
  --color-base-rgb: 4 15 52;
  --color-base-oklch: oklch(18.8% 0.075 265.2);
  --color-50: #F0F4FE;
  --color-100: #D8E1FD;
  --color-200: #B3C4F9;
  --color-300: #809AEF;
  --color-400: #5273E0;
  --color-500: #2F52C6;
  --color-600: #2B4496;
  --color-700: #25356A;
  --color-800: #1C2545;
  --color-900: #13182A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  navy: {
    50: '#F0F4FE',
    100: '#D8E1FD',
    200: '#B3C4F9',
    300: '#809AEF',
    400: '#5273E0',
    500: '#2F52C6',
    600: '#2B4496',
    700: '#25356A',
    800: '#1C2545',
    900: '#13182A',
  },
}

$base: #040F34;
$base-ink: #FFFFFF;
$base-50: #F0F4FE;
$base-100: #D8E1FD;
$base-200: #B3C4F9;
$base-300: #809AEF;
$base-400: #5273E0;
$base-500: #2F52C6;
$base-600: #2B4496;
$base-700: #25356A;
$base-800: #1C2545;
$base-900: #13182A;
$base-hover: #030C2A;
$base-subtle: #8EA3E7;

{
    "color": {
        "base": {
            "value": "#040F34",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F4FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E1FD",
                "type": "color"
            },
            "200": {
                "value": "#B3C4F9",
                "type": "color"
            },
            "300": {
                "value": "#809AEF",
                "type": "color"
            },
            "400": {
                "value": "#5273E0",
                "type": "color"
            },
            "500": {
                "value": "#2F52C6",
                "type": "color"
            },
            "600": {
                "value": "#2B4496",
                "type": "color"
            },
            "700": {
                "value": "#25356A",
                "type": "color"
            },
            "800": {
                "value": "#1C2545",
                "type": "color"
            },
            "900": {
                "value": "#13182A",
                "type": "color"
            }
        }
    }
}

Palettes built on #040F34

Color Lab

Pairs with #040F34

UI roles & guardrails

In real applications

Scales

Every model

Export