What color is #210903?

#210903 is a very dark, vivid red-orange. In RGB it is rgb(33, 9, 3), and in HSL hsl(12, 83%, 7%).

Is #210903 accessible as text?

On white, #210903 has a contrast ratio of 19.00:1 (passes WCAG AA for body text); on black it is 1.11:1 (fails). For text placed on #210903, use white for the best readability.

What is the closest Tailwind color to #210903?

The nearest Tailwind CSS token is olive-950 (#0C0C09).

What colors go well with #210903?

#210903 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #031B21. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #210903 below.

Is #210903 good for buttons?

#210903 works well for buttons and highlights, but use white text on #210903 — black text only reaches 1.11:1, below the 4.5:1 needed for normal-size labels.

Is #210903 the same as CSS black?

No — #210903 is not the CSS named color black, but black (#000000) is the closest CSS named color.

#210903 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #210903

Not just a swatch — here's how #210903 works with other colors. Named schemes with #210903 in its natural role, and a note on why the supporting colors balance it.

Warm Autumn Interior Dominant · 5 colors

Dominant #210903 Secondary #B66422 Accent #767843 Surface #F4ECDD Anchor #3B2A20

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.

Vintage Leather Lead · 5 colors

Lead #210903 Secondary #7B4926 Surface #EAD9C0 Accent #42503B Anchor #5B222D

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.

Desert Clay Center · 5 colors

Center #210903 Surface #E3CEA8 Secondary #B17957 Accent #97976D Anchor #3E2C20

Jet Black holds the warm center of this desert palette with sand and clay beside it, a muted-sage accent and a dark-brown anchor.

Japanese Sand Base · 5 colors

Base #210903 Surface #F0E9DC Highlight #F7F1E7 Secondary #BAAE9F 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.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #210903 Secondary #3A302D Support #9B9186 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 #210903 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 63/100

Warm

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

Softness 19/100

Very low

Firm and assertive — carries weight and contrast.

Depth 78/100

High

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

Naturalness 61/100

High

Organic, earthy character — at home in wellness, food and craft brands.

Vintage feel 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 78/100

High

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

Brand distinctiveness 17/100

Very 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 60/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 95/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #210903

For UI

For branding

For interior

For fashion

People also use #210903 with

Oxblood 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 19.0:1. Use

Subtle surface Use #ECBFB3 for cards and hover fills. Tint 80

Avoid beside #211303 — 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 #210903 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: #210903;
  --color-base-rgb: 33 9 3;
  --color-base-oklch: oklch(17.8% 0.044 39.3);
  --color-50: #FEF3F0;
  --color-100: #FDE0D9;
  --color-200: #F8C2B4;
  --color-300: #ED9782;
  --color-400: #DE7054;
  --color-500: #C34F31;
  --color-600: #95422D;
  --color-700: #693326;
  --color-800: #44241C;
  --color-900: #2A1813;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#FEF3F0',
    100: '#FDE0D9',
    200: '#F8C2B4',
    300: '#ED9782',
    400: '#DE7054',
    500: '#C34F31',
    600: '#95422D',
    700: '#693326',
    800: '#44241C',
    900: '#2A1813',
  },
}

$base: #210903;
$base-ink: #FFFFFF;
$base-50: #FEF3F0;
$base-100: #FDE0D9;
$base-200: #F8C2B4;
$base-300: #ED9782;
$base-400: #DE7054;
$base-500: #C34F31;
$base-600: #95422D;
$base-700: #693326;
$base-800: #44241C;
$base-900: #2A1813;
$base-hover: #1A0702;
$base-subtle: #E59D8B;

{
    "color": {
        "base": {
            "value": "#210903",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#FEF3F0",
                "type": "color"
            },
            "100": {
                "value": "#FDE0D9",
                "type": "color"
            },
            "200": {
                "value": "#F8C2B4",
                "type": "color"
            },
            "300": {
                "value": "#ED9782",
                "type": "color"
            },
            "400": {
                "value": "#DE7054",
                "type": "color"
            },
            "500": {
                "value": "#C34F31",
                "type": "color"
            },
            "600": {
                "value": "#95422D",
                "type": "color"
            },
            "700": {
                "value": "#693326",
                "type": "color"
            },
            "800": {
                "value": "#44241C",
                "type": "color"
            },
            "900": {
                "value": "#2A1813",
                "type": "color"
            }
        }
    }
}

Palettes built on #210903

Color Lab

Pairs with #210903

UI roles & guardrails

In real applications

Scales

Every model

Export