What color is #010221?

#010221 is a very dark, vivid blue. In RGB it is rgb(1, 2, 33), and in HSL hsl(238, 94%, 7%).

Is #010221 accessible as text?

On white, #010221 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 #010221, use white for the best readability.

What is the closest Tailwind color to #010221?

The nearest Tailwind CSS token is mauve-950 (#0C090C).

What colors go well with #010221?

#010221 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #232201. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #010221 below.

Is #010221 good for buttons?

#010221 works well for buttons and highlights, but use white text on #010221 — black text only reaches 1.03:1, below the 4.5:1 needed for normal-size labels.

Is #010221 the same as CSS black?

No — #010221 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#010221 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #010221

Not just a swatch — here's how #010221 works with other colors. Named schemes with #010221 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #010221 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Jet Black 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 #010221 Secondary #AEB4B8 Surface #F1F2F0 Support #7D92A7 Anchor #2E3236

Jet Black 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 #010221 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #131E3E

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 #010221 Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #58223A

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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #010221 Secondary #202531 Support #9D8F88 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 #010221 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 34/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 13/100

Very low

Firm and assertive — carries weight and contrast.

Depth 85/100

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 21/100

Low

Clean and current — no dusty, aged cast.

Luxury 85/100

Very high

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

Brand distinctiveness 27/100

Low

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

UI accent fit 5/100

Very low

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

Surface fit 56/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #010221

For UI

For branding

For interior

For fashion

People also use #010221 with

Prussian Blue Jet Black Graphite 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 20.4:1. Use

Subtle surface Use #AFB2F0 for cards and hover fills. Tint 80

Avoid beside #0B0123 — 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 #010221 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: #010221;
  --color-base-rgb: 1 2 33;
  --color-base-oklch: oklch(12.4% 0.070 267.5);
  --color-50: #F0F1FE;
  --color-100: #D8D9FD;
  --color-200: #B1B3FC;
  --color-300: #7B7FF4;
  --color-400: #4B50E7;
  --color-500: #282DCD;
  --color-600: #262A9B;
  --color-700: #21246D;
  --color-800: #1A1B47;
  --color-900: #12132B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F0F1FE',
    100: '#D8D9FD',
    200: '#B1B3FC',
    300: '#7B7FF4',
    400: '#4B50E7',
    500: '#282DCD',
    600: '#262A9B',
    700: '#21246D',
    800: '#1A1B47',
    900: '#12132B',
  },
}

$base: #010221;
$base-ink: #FFFFFF;
$base-50: #F0F1FE;
$base-100: #D8D9FD;
$base-200: #B1B3FC;
$base-300: #7B7FF4;
$base-400: #4B50E7;
$base-500: #282DCD;
$base-600: #262A9B;
$base-700: #21246D;
$base-800: #1A1B47;
$base-900: #12132B;
$base-hover: #01021C;
$base-subtle: #8588EB;

{
    "color": {
        "base": {
            "value": "#010221",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F1FE",
                "type": "color"
            },
            "100": {
                "value": "#D8D9FD",
                "type": "color"
            },
            "200": {
                "value": "#B1B3FC",
                "type": "color"
            },
            "300": {
                "value": "#7B7FF4",
                "type": "color"
            },
            "400": {
                "value": "#4B50E7",
                "type": "color"
            },
            "500": {
                "value": "#282DCD",
                "type": "color"
            },
            "600": {
                "value": "#262A9B",
                "type": "color"
            },
            "700": {
                "value": "#21246D",
                "type": "color"
            },
            "800": {
                "value": "#1A1B47",
                "type": "color"
            },
            "900": {
                "value": "#12132B",
                "type": "color"
            }
        }
    }
}

Palettes built on #010221

Color Lab

Pairs with #010221

UI roles & guardrails

In real applications

Scales

Every model

Export