What color is #304F4E?

#304F4E is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(48, 79, 78), and in HSL hsl(178, 24%, 25%).

Is #304F4E accessible as text?

On white, #304F4E has a contrast ratio of 8.92:1 (passes WCAG AA for body text); on black it is 2.35:1 (fails). For text placed on #304F4E, use white for the best readability.

What is the closest Tailwind color to #304F4E?

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

What colors go well with #304F4E?

As a neutral, #304F4E 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 #304F4E the same as CSS darkslategray?

No — #304F4E 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.

#304F4E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #304F4E

Not just a swatch — here's how #304F4E works with other colors. Named schemes with #304F4E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #304F4E Accent #A7C4BD Surface #E0DABE Secondary #9AA0A0 Anchor #1C3549

Dark Slate Gray 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 #304F4E Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A4 Anchor #2E3236

Dark Slate Gray 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 #304F4E Secondary #725018 Surface #E4DCC0 Accent #3A5142 Anchor #552340

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

Modern Café Dominant · 5 colors

Dominant #304F4E Anchor #382B1E Surface #ECE4D0 Accent #819C72 Secondary #3A3933

Dark Slate Gray anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #304F4E Secondary #677272 Support #979286 Ink #16140F

Dark Slate Gray 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 Dark Slate Gray carrying the quiet middle.

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Color Lab

How #304F4E 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 41/100

Neutral

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

Softness 41/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 57/100

Moderate

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

Naturalness 8/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 36/100

Low

A faint retro warmth without tipping into sepia.

Luxury 60/100

High

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

Brand distinctiveness 14/100

Very low

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

UI accent fit 49/100

Moderate

Workable accent with care around contrast.

Surface fit 48/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 91/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #304F4E

For UI

For branding

For interior

For fashion

People also use #304F4E with

Feldgrau Charcoal Espresso 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 8.9:1. Use

Subtle surface Use #D2DFDF for cards and hover fills. Tint 80

Avoid beside #30464F — 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 #304F4E 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: #304F4E;
  --color-base-rgb: 48 79 78;
  --color-base-oklch: oklch(40.3% 0.037 193.2);
  --color-50: #F5F9F9;
  --color-100: #E5F0EF;
  --color-200: #CCE0DF;
  --color-300: #A8C7C6;
  --color-400: #85ADAC;
  --color-500: #65908E;
  --color-600: #52706F;
  --color-700: #3E5150;
  --color-800: #2B3636;
  --color-900: #1B2222;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F5F9F9',
    100: '#E5F0EF',
    200: '#CCE0DF',
    300: '#A8C7C6',
    400: '#85ADAC',
    500: '#65908E',
    600: '#52706F',
    700: '#3E5150',
    800: '#2B3636',
    900: '#1B2222',
  },
}

$base: #304F4E;
$base-ink: #FFFFFF;
$base-50: #F5F9F9;
$base-100: #E5F0EF;
$base-200: #CCE0DF;
$base-300: #A8C7C6;
$base-400: #85ADAC;
$base-500: #65908E;
$base-600: #52706F;
$base-700: #3E5150;
$base-800: #2B3636;
$base-900: #1B2222;
$base-hover: #273F3E;
$base-subtle: #BBD0CF;

{
    "color": {
        "base": {
            "value": "#304F4E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F9F9",
                "type": "color"
            },
            "100": {
                "value": "#E5F0EF",
                "type": "color"
            },
            "200": {
                "value": "#CCE0DF",
                "type": "color"
            },
            "300": {
                "value": "#A8C7C6",
                "type": "color"
            },
            "400": {
                "value": "#85ADAC",
                "type": "color"
            },
            "500": {
                "value": "#65908E",
                "type": "color"
            },
            "600": {
                "value": "#52706F",
                "type": "color"
            },
            "700": {
                "value": "#3E5150",
                "type": "color"
            },
            "800": {
                "value": "#2B3636",
                "type": "color"
            },
            "900": {
                "value": "#1B2222",
                "type": "color"
            }
        }
    }
}

Palettes built on #304F4E

Color Lab

Pairs with #304F4E

UI roles & guardrails

In real applications

Scales

Every model

Export