What color is #424C4D?

#424C4D is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(66, 76, 77), and in HSL hsl(185, 8%, 28%).

Is #424C4D accessible as text?

On white, #424C4D has a contrast ratio of 8.85:1 (passes WCAG AA for body text); on black it is 2.37:1 (fails). For text placed on #424C4D, use white for the best readability.

What is the closest Tailwind color to #424C4D?

The nearest Tailwind CSS token is neutral-600 (#525252).

What colors go well with #424C4D?

As a neutral, #424C4D 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 #424C4D the same as CSS darkslategray?

No — #424C4D 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.

#424C4D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #424C4D

Not just a swatch — here's how #424C4D works with other colors. Named schemes with #424C4D in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #424C4D Surface #14161A Highlight #F4F6F8 Secondary #596671 Accent #646D6E

Outer Space is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Outer Space.

Vintage Leather Lead · 5 colors

Lead #424C4D Secondary #715017 Surface #E3DCC0 Accent #395143 Anchor #55233F

Outer Space 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 #424C4D Anchor #372C1D Surface #EBE5D0 Accent #7F9D73 Secondary #3A3933

Outer Space 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.

Japanese Sand Base · 5 colors

Base #424C4D Surface #EDEADC Highlight #F4F2E7 Secondary #B4B19F Ink #2A2723

Outer Space 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 #F6F4EF Accent #424C4D Secondary #6E7272 Support #979286 Ink #16140F

Outer Space 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 Outer Space carrying the quiet middle.

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Color Lab

How #424C4D 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 47/100

Neutral

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

Softness 43/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 55/100

Moderate

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

Naturalness 2/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 29/100

Low

A faint retro warmth without tipping into sepia.

Luxury 58/100

Moderate

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

Brand distinctiveness 5/100

Very low

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

UI accent fit 40/100

Low

Workable accent with care around contrast.

Surface fit 55/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 97/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #424C4D

For UI

For branding

For interior

For fashion

People also use #424C4D with

Ebony Outer Space Platinum

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 #D8DCDC for cards and hover fills. Tint 80

Avoid beside #42484D — 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 #424C4D at work across the surfaces designers actually ship.

Website / UI

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Build faster.

A working theme, generated in seconds.

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: #424C4D;
  --color-base-rgb: 66 76 77;
  --color-base-oklch: oklch(40.8% 0.013 204.0);
  --color-50: #F7F8F8;
  --color-100: #E9ECEC;
  --color-200: #D3D9D9;
  --color-300: #B2BCBD;
  --color-400: #929FA0;
  --color-500: #738081;
  --color-600: #5C6566;
  --color-700: #444A4B;
  --color-800: #2F3232;
  --color-900: #1D2020;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  outer-space: {
    50: '#F7F8F8',
    100: '#E9ECEC',
    200: '#D3D9D9',
    300: '#B2BCBD',
    400: '#929FA0',
    500: '#738081',
    600: '#5C6566',
    700: '#444A4B',
    800: '#2F3232',
    900: '#1D2020',
  },
}

$base: #424C4D;
$base-ink: #FFFFFF;
$base-50: #F7F8F8;
$base-100: #E9ECEC;
$base-200: #D3D9D9;
$base-300: #B2BCBD;
$base-400: #929FA0;
$base-500: #738081;
$base-600: #5C6566;
$base-700: #444A4B;
$base-800: #2F3232;
$base-900: #1D2020;
$base-hover: #353D3E;
$base-subtle: #C5CBCB;

{
    "color": {
        "base": {
            "value": "#424C4D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F8F8",
                "type": "color"
            },
            "100": {
                "value": "#E9ECEC",
                "type": "color"
            },
            "200": {
                "value": "#D3D9D9",
                "type": "color"
            },
            "300": {
                "value": "#B2BCBD",
                "type": "color"
            },
            "400": {
                "value": "#929FA0",
                "type": "color"
            },
            "500": {
                "value": "#738081",
                "type": "color"
            },
            "600": {
                "value": "#5C6566",
                "type": "color"
            },
            "700": {
                "value": "#444A4B",
                "type": "color"
            },
            "800": {
                "value": "#2F3232",
                "type": "color"
            },
            "900": {
                "value": "#1D2020",
                "type": "color"
            }
        }
    }
}

Palettes built on #424C4D

Color Lab

Pairs with #424C4D

UI roles & guardrails

In real applications

Scales

Every model

Export