What color is #304343?

#304343 is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(48, 67, 67), and in HSL hsl(180, 17%, 23%).

Is #304343 accessible as text?

On white, #304343 has a contrast ratio of 10.45:1 (passes WCAG AA for body text); on black it is 2.01:1 (fails). For text placed on #304343, use white for the best readability.

What is the closest Tailwind color to #304343?

The nearest Tailwind CSS token is neutral-700 (#404040).

What colors go well with #304343?

As a neutral, #304343 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 #304343 the same as CSS darkslategray?

No — #304343 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) 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.

#304343 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #304343

Not just a swatch — here's how #304343 works with other colors. Named schemes with #304343 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #304343 Accent #A6C4BD Surface #E0DABE Secondary #9AA0A0 Anchor #1D3549

Charcoal 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 #304343 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

Charcoal keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Vintage Leather Lead · 5 colors

Lead #304343 Secondary #715018 Surface #E4DCC0 Accent #3A5142 Anchor #552340

Charcoal plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Luxury Packaging Feature · 5 colors

Feature #304343 Anchor #141210 Accent #B8AA4D Secondary #1D2C2C Surface #F1EDE3

Charcoal 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 #F6F4EF Accent #304343 Secondary #606767 Support #979286 Ink #16140F

Charcoal 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 Charcoal carrying the quiet middle.

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Color Lab

How #304343 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 44/100

Neutral

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

Softness 39/100

Low

Middle-weight — neither delicate nor heavy.

Depth 59/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 5/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 30/100

Low

A faint retro warmth without tipping into sepia.

Luxury 62/100

High

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

Brand distinctiveness 9/100

Very low

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

UI accent fit 36/100

Low

Workable accent with care around contrast.

Surface fit 54/100

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 #304343

For UI

For branding

For interior

For fashion

People also use #304343 with

Feldgrau Onyx Platinum Dark Slate Gray

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 10.4:1. Use

Subtle surface Use #D3DDDD for cards and hover fills. Tint 80

Avoid beside #313E45 — 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 #304343 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: #304343;
  --color-base-rgb: 48 67 67;
  --color-base-oklch: oklch(36.7% 0.024 196.2);
  --color-50: #F6F9F9;
  --color-100: #E7EEEE;
  --color-200: #CFDDDD;
  --color-300: #ADC3C3;
  --color-400: #8BA7A7;
  --color-500: #6B8989;
  --color-600: #566B6B;
  --color-700: #414E4E;
  --color-800: #2C3535;
  --color-900: #1C2121;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  charcoal: {
    50: '#F6F9F9',
    100: '#E7EEEE',
    200: '#CFDDDD',
    300: '#ADC3C3',
    400: '#8BA7A7',
    500: '#6B8989',
    600: '#566B6B',
    700: '#414E4E',
    800: '#2C3535',
    900: '#1C2121',
  },
}

$base: #304343;
$base-ink: #FFFFFF;
$base-50: #F6F9F9;
$base-100: #E7EEEE;
$base-200: #CFDDDD;
$base-300: #ADC3C3;
$base-400: #8BA7A7;
$base-500: #6B8989;
$base-600: #566B6B;
$base-700: #414E4E;
$base-800: #2C3535;
$base-900: #1C2121;
$base-hover: #273737;
$base-subtle: #BCCCCC;

{
    "color": {
        "base": {
            "value": "#304343",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F9F9",
                "type": "color"
            },
            "100": {
                "value": "#E7EEEE",
                "type": "color"
            },
            "200": {
                "value": "#CFDDDD",
                "type": "color"
            },
            "300": {
                "value": "#ADC3C3",
                "type": "color"
            },
            "400": {
                "value": "#8BA7A7",
                "type": "color"
            },
            "500": {
                "value": "#6B8989",
                "type": "color"
            },
            "600": {
                "value": "#566B6B",
                "type": "color"
            },
            "700": {
                "value": "#414E4E",
                "type": "color"
            },
            "800": {
                "value": "#2C3535",
                "type": "color"
            },
            "900": {
                "value": "#1C2121",
                "type": "color"
            }
        }
    }
}