What color is #21041B?

#21041B is a very dark, vivid magenta. In RGB it is rgb(33, 4, 27), and in HSL hsl(312, 78%, 7%).

Is #21041B accessible as text?

On white, #21041B has a contrast ratio of 19.13:1 (passes WCAG AA for body text); on black it is 1.10:1 (fails). For text placed on #21041B, use white for the best readability.

What is the closest Tailwind color to #21041B?

The nearest Tailwind CSS token is mauve-900 (#1D161E).

What colors go well with #21041B?

#21041B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #042009. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #21041B below.

Is #21041B good for buttons?

#21041B works well for buttons and highlights, but use white text on #21041B — black text only reaches 1.10:1, below the 4.5:1 needed for normal-size labels.

Is #21041B the same as CSS midnightblue?

No — #21041B is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#21041B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #21041B

Not just a swatch — here's how #21041B works with other colors. Named schemes with #21041B in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #21041B Secondary #7D472D Surface #ECD8C1 Accent #464F38 Anchor #592233

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 #21041B Surface #F1E8DC Highlight #F7F0E7 Secondary #BCADA0 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 #21041B Anchor #141210 Accent #D69A52 Secondary #30252C 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 #21041B Secondary #3A2E36 Support #9C9087 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.

Berry & Cream Lead · 5 colors

Lead #21041B Surface #F4E6D7 Anchor #5D203C Accent #E6C2C5 Secondary #332B2E

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

Build a working theme in the generator →

Color Lab

How #21041B 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 55/100

Neutral

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

Softness 18/100

Very low

Firm and assertive — carries weight and contrast.

Depth 80/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 4/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 33/100

Low

A faint retro warmth without tipping into sepia.

Luxury 80/100

Very high

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

Brand distinctiveness 24/100

Low

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

UI accent fit 9/100

Very low

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

Surface fit 54/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 93/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #21041B

For UI

For branding

For interior

For fashion

People also use #21041B with

Deep Purple Jet Black Graphite Gainsboro Eggplant

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 19.1:1. Use

Subtle surface Use #EAB5E0 for cards and hover fills. Tint 80

Avoid beside #200411 — 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 #21041B 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: #21041B;
  --color-base-rgb: 33 4 27;
  --color-base-oklch: oklch(17.8% 0.063 336.8);
  --color-50: #FEF1FB;
  --color-100: #FBDAF5;
  --color-200: #F6B6E9;
  --color-300: #EA85D6;
  --color-400: #DA58C0;
  --color-500: #BF36A4;
  --color-600: #91307E;
  --color-700: #67285A;
  --color-800: #431E3C;
  --color-900: #291425;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#FEF1FB',
    100: '#FBDAF5',
    200: '#F6B6E9',
    300: '#EA85D6',
    400: '#DA58C0',
    500: '#BF36A4',
    600: '#91307E',
    700: '#67285A',
    800: '#431E3C',
    900: '#291425',
  },
}

$base: #21041B;
$base-ink: #FFFFFF;
$base-50: #FEF1FB;
$base-100: #FBDAF5;
$base-200: #F6B6E9;
$base-300: #EA85D6;
$base-400: #DA58C0;
$base-500: #BF36A4;
$base-600: #91307E;
$base-700: #67285A;
$base-800: #431E3C;
$base-900: #291425;
$base-hover: #190315;
$base-subtle: #E28ED1;

{
    "color": {
        "base": {
            "value": "#21041B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEF1FB",
                "type": "color"
            },
            "100": {
                "value": "#FBDAF5",
                "type": "color"
            },
            "200": {
                "value": "#F6B6E9",
                "type": "color"
            },
            "300": {
                "value": "#EA85D6",
                "type": "color"
            },
            "400": {
                "value": "#DA58C0",
                "type": "color"
            },
            "500": {
                "value": "#BF36A4",
                "type": "color"
            },
            "600": {
                "value": "#91307E",
                "type": "color"
            },
            "700": {
                "value": "#67285A",
                "type": "color"
            },
            "800": {
                "value": "#431E3C",
                "type": "color"
            },
            "900": {
                "value": "#291425",
                "type": "color"
            }
        }
    }
}

Palettes built on #21041B

Color Lab

Pairs with #21041B

UI roles & guardrails

In real applications

Scales

Every model

Export