What color is #210409?

#210409 is a very dark, vivid red. In RGB it is rgb(33, 4, 9), and in HSL hsl(350, 78%, 7%).

Is #210409 accessible as text?

On white, #210409 has a contrast ratio of 19.34:1 (passes WCAG AA for body text); on black it is 1.09:1 (fails). For text placed on #210409, use white for the best readability.

What is the closest Tailwind color to #210409?

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

What colors go well with #210409?

#210409 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #04201B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #210409 below.

Is #210409 good for buttons?

#210409 works well for buttons and highlights, but use white text on #210409 — black text only reaches 1.09:1, below the 4.5:1 needed for normal-size labels.

Is #210409 the same as CSS black?

No — #210409 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#210409 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #210409

Not just a swatch — here's how #210409 works with other colors. Named schemes with #210409 in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #210409 Secondary #7C4829 Surface #EBD9C1 Accent #444F39 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 #210409 Secondary #B8622A Accent #797642 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 #210409 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 #210409 Anchor #141210 Accent #D29D4F Secondary #322526 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 #210409 Secondary #392C2E 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.

Build a working theme in the generator →

Color Lab

How #210409 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 62/100

Warm

Reads warm and advancing — inviting, energetic, draws the eye forward.

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 36/100

Low

Loosely natural — an earthy edge without being rustic.

Vintage feel 33/100

Low

A faint retro warmth without tipping into sepia.

Luxury 80/100

High

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

Brand distinctiveness 20/100

Low

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

UI accent fit 8/100

Very low

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

Surface fit 58/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 94/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #210409

For UI

For branding

For interior

For fashion

People also use #210409 with

Deep Purple Graphite Gainsboro Taupe

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 19.3:1. Use

Subtle surface Use #EAB5BE for cards and hover fills. Tint 80

Avoid beside #200904 — 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 #210409 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: #210409;
  --color-base-rgb: 33 4 9;
  --color-base-oklch: oklch(16.9% 0.052 12.2);
  --color-50: #FEF1F3;
  --color-100: #FBDADF;
  --color-200: #F6B6C1;
  --color-300: #EA8596;
  --color-400: #DA586E;
  --color-500: #BF364D;
  --color-600: #913041;
  --color-700: #672832;
  --color-800: #431E24;
  --color-900: #291418;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#FEF1F3',
    100: '#FBDADF',
    200: '#F6B6C1',
    300: '#EA8596',
    400: '#DA586E',
    500: '#BF364D',
    600: '#913041',
    700: '#672832',
    800: '#431E24',
    900: '#291418',
  },
}

$base: #210409;
$base-ink: #FFFFFF;
$base-50: #FEF1F3;
$base-100: #FBDADF;
$base-200: #F6B6C1;
$base-300: #EA8596;
$base-400: #DA586E;
$base-500: #BF364D;
$base-600: #913041;
$base-700: #672832;
$base-800: #431E24;
$base-900: #291418;
$base-hover: #190307;
$base-subtle: #E28E9C;

{
    "color": {
        "base": {
            "value": "#210409",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEF1F3",
                "type": "color"
            },
            "100": {
                "value": "#FBDADF",
                "type": "color"
            },
            "200": {
                "value": "#F6B6C1",
                "type": "color"
            },
            "300": {
                "value": "#EA8596",
                "type": "color"
            },
            "400": {
                "value": "#DA586E",
                "type": "color"
            },
            "500": {
                "value": "#BF364D",
                "type": "color"
            },
            "600": {
                "value": "#913041",
                "type": "color"
            },
            "700": {
                "value": "#672832",
                "type": "color"
            },
            "800": {
                "value": "#431E24",
                "type": "color"
            },
            "900": {
                "value": "#291418",
                "type": "color"
            }
        }
    }
}