What color is #100203?

#100203 is a very dark low-chroma warm gray with a subtle warm cast. In RGB it is rgb(16, 2, 3), and in HSL hsl(356, 78%, 4%).

Is #100203 accessible as text?

On white, #100203 has a contrast ratio of 20.35:1 (passes WCAG AA for body text); on black it is 1.03:1 (fails). For text placed on #100203, use white for the best readability.

What is the closest Tailwind color to #100203?

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

What colors go well with #100203?

As a neutral, #100203 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 #100203 the same as CSS black?

No — #100203 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#100203 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #100203

Not just a swatch — here's how #100203 works with other colors. Named schemes with #100203 in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #100203 Secondary #7C4829 Surface #EAD9C0 Accent #434F3A Anchor #5A222F

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.

Warm Autumn Interior Dominant · 5 colors

Dominant #100203 Secondary #B86229 Accent #797742 Surface #F5EBDD Anchor #3B2A21

This palette keeps Jet Black as the dominant warm neutral, balanced by muted terracotta and olive earth tones and grounded by a deep espresso anchor.

Japanese Sand Base · 5 colors

Base #100203 Surface #F0E8DC Highlight #F7F1E7 Secondary #BBAEA0 Ink #2B2723

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 #100203 Anchor #141210 Accent #D29D4E Secondary #322525 Surface #F3EDE3

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 #100203 Secondary #2A2222 Support #9B9087 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 #100203 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 58/100

Neutral

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

Softness 14/100

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 29/100

Low

Loosely natural — an earthy edge without being rustic.

Vintage feel 24/100

Low

Clean and current — no dusty, aged cast.

Luxury 82/100

Very high

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

Brand distinctiveness 13/100

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 67/100

High

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

Print safety 96/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #100203

For UI

For branding

For interior

For fashion

People also use #100203 with

Deep Purple Jet Black Gainsboro Espresso

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 20.3:1. Use

Subtle surface Use #EAB3B6 for cards and hover fills. Tint 80

Avoid beside #120602 — 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 #100203 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: #100203;
  --color-base-rgb: 16 2 3;
  --color-base-oklch: oklch(12.1% 0.033 16.1);
  --color-50: #FEF1F2;
  --color-100: #FBDADC;
  --color-200: #F6B6BB;
  --color-300: #EA858C;
  --color-400: #DA5861;
  --color-500: #BF363F;
  --color-600: #913037;
  --color-700: #67282C;
  --color-800: #431E20;
  --color-900: #291415;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#FEF1F2',
    100: '#FBDADC',
    200: '#F6B6BB',
    300: '#EA858C',
    400: '#DA5861',
    500: '#BF363F',
    600: '#913037',
    700: '#67282C',
    800: '#431E20',
    900: '#291415',
  },
}

$base: #100203;
$base-ink: #FFFFFF;
$base-50: #FEF1F2;
$base-100: #FBDADC;
$base-200: #F6B6BB;
$base-300: #EA858C;
$base-400: #DA5861;
$base-500: #BF363F;
$base-600: #913037;
$base-700: #67282C;
$base-800: #431E20;
$base-900: #291415;
$base-hover: #0F0203;
$base-subtle: #E18A90;

{
    "color": {
        "base": {
            "value": "#100203",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEF1F2",
                "type": "color"
            },
            "100": {
                "value": "#FBDADC",
                "type": "color"
            },
            "200": {
                "value": "#F6B6BB",
                "type": "color"
            },
            "300": {
                "value": "#EA858C",
                "type": "color"
            },
            "400": {
                "value": "#DA5861",
                "type": "color"
            },
            "500": {
                "value": "#BF363F",
                "type": "color"
            },
            "600": {
                "value": "#913037",
                "type": "color"
            },
            "700": {
                "value": "#67282C",
                "type": "color"
            },
            "800": {
                "value": "#431E20",
                "type": "color"
            },
            "900": {
                "value": "#291415",
                "type": "color"
            }
        }
    }
}

Palettes built on #100203

Color Lab

Pairs with #100203

UI roles & guardrails

In real applications

Scales

Every model

Export