What color is #010503?

#010503 is a very dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(1, 5, 3), and in HSL hsl(150, 67%, 1%).

Is #010503 accessible as text?

On white, #010503 has a contrast ratio of 20.50:1 (passes WCAG AA for body text); on black it is 1.02:1 (fails). For text placed on #010503, use white for the best readability.

What is the closest Tailwind color to #010503?

The nearest Tailwind CSS token is zinc-950 (#09090B).

What colors go well with #010503?

As a neutral, #010503 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 #010503 the same as CSS black?

No — #010503 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#010503 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #010503

Not just a swatch — here's how #010503 works with other colors. Named schemes with #010503 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #010503 Surface #13161A Highlight #F4F6F8 Secondary #586771 Accent #161E1A

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 #010503 Secondary #744F1A Surface #E5DBC0 Accent #3B5141 Anchor #5B2320

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 #010503 Surface #EDEADC Highlight #F5F1E7 Secondary #B6B09F Ink #2A2723

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.

Luxury Packaging Feature · 5 colors

Feature #010503 Anchor #141210 Accent #BDA84C Secondary #202C26 Surface #F1EDE3

Jet Black 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.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #010503 Secondary #1E2120 Support #989286 Ink #17140F

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.

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Color Lab

How #010503 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 19/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 14/100

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 6/100

Very low

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

UI accent fit 2/100

Very low

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

Surface fit 73/100

High

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

Print safety 97/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #010503

For UI

For branding

For interior

For fashion

People also use #010503 with

Graphite Jet Black Platinum Hunter Green

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 #B4E5CD for cards and hover fills. Tint 80

Avoid beside #010404 — 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 #010503 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: #010503;
  --color-base-rgb: 1 5 3;
  --color-base-oklch: oklch(10.5% 0.016 165.3);
  --color-50: #F2FDF7;
  --color-100: #DCF9EB;
  --color-200: #BBF1D6;
  --color-300: #8CE3B8;
  --color-400: #62D099;
  --color-500: #3FB57A;
  --color-600: #378B61;
  --color-700: #2C6247;
  --color-800: #204130;
  --color-900: #16281F;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F2FDF7',
    100: '#DCF9EB',
    200: '#BBF1D6',
    300: '#8CE3B8',
    400: '#62D099',
    500: '#3FB57A',
    600: '#378B61',
    700: '#2C6247',
    800: '#204130',
    900: '#16281F',
  },
}

$base: #010503;
$base-ink: #FFFFFF;
$base-50: #F2FDF7;
$base-100: #DCF9EB;
$base-200: #BBF1D6;
$base-300: #8CE3B8;
$base-400: #62D099;
$base-500: #3FB57A;
$base-600: #378B61;
$base-700: #2C6247;
$base-800: #204130;
$base-900: #16281F;
$base-hover: #010302;
$base-subtle: #8DDAB3;

{
    "color": {
        "base": {
            "value": "#010503",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FDF7",
                "type": "color"
            },
            "100": {
                "value": "#DCF9EB",
                "type": "color"
            },
            "200": {
                "value": "#BBF1D6",
                "type": "color"
            },
            "300": {
                "value": "#8CE3B8",
                "type": "color"
            },
            "400": {
                "value": "#62D099",
                "type": "color"
            },
            "500": {
                "value": "#3FB57A",
                "type": "color"
            },
            "600": {
                "value": "#378B61",
                "type": "color"
            },
            "700": {
                "value": "#2C6247",
                "type": "color"
            },
            "800": {
                "value": "#204130",
                "type": "color"
            },
            "900": {
                "value": "#16281F",
                "type": "color"
            }
        }
    }
}

Palettes built on #010503

Color Lab

Pairs with #010503

UI roles & guardrails

In real applications

Scales

Every model

Export