What color is #010603?

#010603 is a very dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(1, 6, 3), and in HSL hsl(144, 71%, 1%).

Is #010603 accessible as text?

On white, #010603 has a contrast ratio of 20.42:1 (passes WCAG AA for body text); on black it is 1.03:1 (fails). For text placed on #010603, use white for the best readability.

What is the closest Tailwind color to #010603?

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

What colors go well with #010603?

As a neutral, #010603 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 #010603 the same as CSS black?

No — #010603 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#010603 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #010603

Not just a swatch — here's how #010603 works with other colors. Named schemes with #010603 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #010603 Secondary #4A6C3D Accent #AC6D00 Surface #EEEAD6 Anchor #3C2F20

Jet Black leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.

Tech Product Signal · 5 colors

Signal #010603 Surface #13161A Highlight #F4F6F8 Secondary #586771 Accent #16201A

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 #010603 Secondary #744E1A 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 #010603 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.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #010603 Secondary #1F2321 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 #010603 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 25/100

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 7/100

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 96/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #010603

For UI

For branding

For interior

For fashion

People also use #010603 with

Sacramento Green 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 20.4:1. Use

Subtle surface Use #B3E6C7 for cards and hover fills. Tint 80

Avoid beside #010403 — 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 #010603 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: #010603;
  --color-base-rgb: 1 6 3;
  --color-base-oklch: oklch(11.0% 0.019 160.1);
  --color-50: #F1FDF6;
  --color-100: #DBFAE8;
  --color-200: #B9F3D0;
  --color-300: #8AE5AE;
  --color-400: #5ED48D;
  --color-500: #3CB96E;
  --color-600: #358D58;
  --color-700: #2B6442;
  --color-800: #1F422D;
  --color-900: #15281D;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F1FDF6',
    100: '#DBFAE8',
    200: '#B9F3D0',
    300: '#8AE5AE',
    400: '#5ED48D',
    500: '#3CB96E',
    600: '#358D58',
    700: '#2B6442',
    800: '#1F422D',
    900: '#15281D',
  },
}

$base: #010603;
$base-ink: #FFFFFF;
$base-50: #F1FDF6;
$base-100: #DBFAE8;
$base-200: #B9F3D0;
$base-300: #8AE5AE;
$base-400: #5ED48D;
$base-500: #3CB96E;
$base-600: #358D58;
$base-700: #2B6442;
$base-800: #1F422D;
$base-900: #15281D;
$base-hover: #010302;
$base-subtle: #8ADCAB;

{
    "color": {
        "base": {
            "value": "#010603",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FDF6",
                "type": "color"
            },
            "100": {
                "value": "#DBFAE8",
                "type": "color"
            },
            "200": {
                "value": "#B9F3D0",
                "type": "color"
            },
            "300": {
                "value": "#8AE5AE",
                "type": "color"
            },
            "400": {
                "value": "#5ED48D",
                "type": "color"
            },
            "500": {
                "value": "#3CB96E",
                "type": "color"
            },
            "600": {
                "value": "#358D58",
                "type": "color"
            },
            "700": {
                "value": "#2B6442",
                "type": "color"
            },
            "800": {
                "value": "#1F422D",
                "type": "color"
            },
            "900": {
                "value": "#15281D",
                "type": "color"
            }
        }
    }
}

Palettes built on #010603

Color Lab

Pairs with #010603

UI roles & guardrails

In real applications

Scales

Every model

Export