What color is #3D4E50?

#3D4E50 is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(61, 78, 80), and in HSL hsl(186, 13%, 28%).

Is #3D4E50 accessible as text?

On white, #3D4E50 has a contrast ratio of 8.74:1 (passes WCAG AA for body text); on black it is 2.40:1 (fails). For text placed on #3D4E50, use white for the best readability.

What is the closest Tailwind color to #3D4E50?

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

What colors go well with #3D4E50?

As a neutral, #3D4E50 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 #3D4E50 the same as CSS darkslategray?

No — #3D4E50 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.

#3D4E50 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3D4E50

Not just a swatch — here's how #3D4E50 works with other colors. Named schemes with #3D4E50 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #3D4E50 Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

Outer Space opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Tech Product Signal · 5 colors

Signal #3D4E50 Surface #14161A Highlight #F4F6F8 Secondary #596671 Accent #5F6F71

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.

Nordic Calm Accent · 5 colors

Accent #3D4E50 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

Outer Space 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 #3D4E50 Secondary #715017 Surface #E3DCC0 Accent #395143 Anchor #56233F

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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #3D4E50 Secondary #6D7374 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 #3D4E50 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 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 31/100

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 8/100

Very low

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

UI accent fit 44/100

Moderate

Workable accent with care around contrast.

Surface fit 52/100

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 #3D4E50

For UI

For branding

For interior

For fashion

People also use #3D4E50 with

Ebony Charcoal Taupe Platinum Outer Space

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 8.7:1. Use

Subtle surface Use #D7DDDE for cards and hover fills. Tint 80

Avoid beside #3E4951 — 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 #3D4E50 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

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: #3D4E50;
  --color-base-rgb: 61 78 80;
  --color-base-oklch: oklch(41.0% 0.022 205.2);
  --color-50: #F6F8F8;
  --color-100: #E8EDED;
  --color-200: #D1DADB;
  --color-300: #AFBEC0;
  --color-400: #8EA2A4;
  --color-500: #6F8486;
  --color-600: #596769;
  --color-700: #424C4D;
  --color-800: #2D3334;
  --color-900: #1D2020;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  outer-space: {
    50: '#F6F8F8',
    100: '#E8EDED',
    200: '#D1DADB',
    300: '#AFBEC0',
    400: '#8EA2A4',
    500: '#6F8486',
    600: '#596769',
    700: '#424C4D',
    800: '#2D3334',
    900: '#1D2020',
  },
}

$base: #3D4E50;
$base-ink: #FFFFFF;
$base-50: #F6F8F8;
$base-100: #E8EDED;
$base-200: #D1DADB;
$base-300: #AFBEC0;
$base-400: #8EA2A4;
$base-500: #6F8486;
$base-600: #596769;
$base-700: #424C4D;
$base-800: #2D3334;
$base-900: #1D2020;
$base-hover: #323F41;
$base-subtle: #C2CCCD;

{
    "color": {
        "base": {
            "value": "#3D4E50",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F8F8",
                "type": "color"
            },
            "100": {
                "value": "#E8EDED",
                "type": "color"
            },
            "200": {
                "value": "#D1DADB",
                "type": "color"
            },
            "300": {
                "value": "#AFBEC0",
                "type": "color"
            },
            "400": {
                "value": "#8EA2A4",
                "type": "color"
            },
            "500": {
                "value": "#6F8486",
                "type": "color"
            },
            "600": {
                "value": "#596769",
                "type": "color"
            },
            "700": {
                "value": "#424C4D",
                "type": "color"
            },
            "800": {
                "value": "#2D3334",
                "type": "color"
            },
            "900": {
                "value": "#1D2020",
                "type": "color"
            }
        }
    }
}

Palettes built on #3D4E50

Color Lab

Pairs with #3D4E50

UI roles & guardrails

In real applications

Scales

Every model

Export