What color is #050309?

#050309 is a very dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(5, 3, 9), and in HSL hsl(260, 50%, 2%).

Is #050309 accessible as text?

On white, #050309 has a contrast ratio of 20.52:1 (passes WCAG AA for body text); on black it is 1.02:1 (fails). For text placed on #050309, use white for the best readability.

What is the closest Tailwind color to #050309?

The nearest Tailwind CSS token is gray-950 (#030712).

What colors go well with #050309?

As a neutral, #050309 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 #050309 the same as CSS black?

No — #050309 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#050309 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #050309

Not just a swatch — here's how #050309 works with other colors. Named schemes with #050309 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #050309 Surface #14161A Highlight #F4F6F8 Secondary #5C6573 Accent #1E1A23

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 #050309 Secondary #7E4631 Surface #EDD8C1 Accent #355248 Anchor #592236

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.

Japanese Sand Base · 5 colors

Base #050309 Surface #F2E8DD Highlight #F8F0E7 Secondary #BDADA1 Ink #2C2724

Jet Black sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Berry & Cream Lead · 5 colors

Lead #050309 Surface #F5E6D7 Anchor #5C2140 Accent #E5C2C7 Secondary #332B2F

Jet Black sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #050309 Secondary #212024 Support #9C9088 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 #050309 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 48/100

Neutral

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

Softness 13/100

Very low

Firm and assertive — carries weight and contrast.

Depth 83/100

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 16/100

Very low

Clean and current — no dusty, aged cast.

Luxury 81/100

Very high

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

Brand distinctiveness 8/100

Very low

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

UI accent fit 3/100

Very low

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

Surface fit 72/100

High

Calm enough for large fills — backgrounds, cards, sections.

Print safety 98/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #050309

For UI

For branding

For interior

For fashion

People also use #050309 with

Graphite Jet Black Gainsboro Russian Violet

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 20.5:1. Use

Subtle surface Use #C7BBDF for cards and hover fills. Tint 80

Avoid beside #060308 — 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 #050309 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: #050309;
  --color-base-rgb: 5 3 9;
  --color-base-oklch: oklch(10.7% 0.020 302.0);
  --color-50: #F6F3FC;
  --color-100: #E7E0F5;
  --color-200: #CFC2EB;
  --color-300: #AD97D8;
  --color-400: #8B70C2;
  --color-500: #6C4EA6;
  --color-600: #574280;
  --color-700: #41335C;
  --color-800: #2C243C;
  --color-900: #1C1825;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F6F3FC',
    100: '#E7E0F5',
    200: '#CFC2EB',
    300: '#AD97D8',
    400: '#8B70C2',
    500: '#6C4EA6',
    600: '#574280',
    700: '#41335C',
    800: '#2C243C',
    900: '#1C1825',
  },
}

$base: #050309;
$base-ink: #FFFFFF;
$base-50: #F6F3FC;
$base-100: #E7E0F5;
$base-200: #CFC2EB;
$base-300: #AD97D8;
$base-400: #8B70C2;
$base-500: #6C4EA6;
$base-600: #574280;
$base-700: #41335C;
$base-800: #2C243C;
$base-900: #1C1825;
$base-hover: #030206;
$base-subtle: #AB98D1;

{
    "color": {
        "base": {
            "value": "#050309",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F3FC",
                "type": "color"
            },
            "100": {
                "value": "#E7E0F5",
                "type": "color"
            },
            "200": {
                "value": "#CFC2EB",
                "type": "color"
            },
            "300": {
                "value": "#AD97D8",
                "type": "color"
            },
            "400": {
                "value": "#8B70C2",
                "type": "color"
            },
            "500": {
                "value": "#6C4EA6",
                "type": "color"
            },
            "600": {
                "value": "#574280",
                "type": "color"
            },
            "700": {
                "value": "#41335C",
                "type": "color"
            },
            "800": {
                "value": "#2C243C",
                "type": "color"
            },
            "900": {
                "value": "#1C1825",
                "type": "color"
            }
        }
    }
}

Palettes built on #050309

Color Lab

Pairs with #050309

UI roles & guardrails

In real applications

Scales

Every model

Export