What color is #3D5151?

#3D5151 is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(61, 81, 81), and in HSL hsl(180, 14%, 28%).

Is #3D5151 accessible as text?

On white, #3D5151 has a contrast ratio of 8.42:1 (passes WCAG AA for body text); on black it is 2.49:1 (fails). For text placed on #3D5151, use white for the best readability.

What is the closest Tailwind color to #3D5151?

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

What colors go well with #3D5151?

As a neutral, #3D5151 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 #3D5151 the same as CSS darkslategray?

No — #3D5151 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.

#3D5151 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3D5151

Not just a swatch — here's how #3D5151 works with other colors. Named schemes with #3D5151 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #3D5151 Accent #A6C4BD Surface #E0DABE Secondary #9AA0A0 Anchor #1D3549

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 #3D5151 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 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 #3D5151 Secondary #715018 Surface #E3DCC0 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 #3D5151 Anchor #382C1E Surface #ECE4D0 Accent #809C72 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 #3D5151 Secondary #6E7676 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.

Build a working theme in the generator →

Color Lab

How #3D5151 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 5/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 33/100

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 10/100

Very low

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

UI accent fit 47/100

Moderate

Workable accent with care around contrast.

Surface fit 50/100

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 #3D5151

For UI

For branding

For interior

For fashion

People also use #3D5151 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 8.4:1. Use

Subtle surface Use #D7DEDE for cards and hover fills. Tint 80

Avoid beside #3D4B51 — 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 #3D5151 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: #3D5151;
  --color-base-rgb: 61 81 81;
  --color-base-oklch: oklch(41.8% 0.025 196.2);
  --color-50: #F6F9F9;
  --color-100: #E8EEEE;
  --color-200: #D1DCDC;
  --color-300: #AFC1C1;
  --color-400: #8DA5A5;
  --color-500: #6E8787;
  --color-600: #586A6A;
  --color-700: #424D4D;
  --color-800: #2D3434;
  --color-900: #1D2020;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F6F9F9',
    100: '#E8EEEE',
    200: '#D1DCDC',
    300: '#AFC1C1',
    400: '#8DA5A5',
    500: '#6E8787',
    600: '#586A6A',
    700: '#424D4D',
    800: '#2D3434',
    900: '#1D2020',
  },
}

$base: #3D5151;
$base-ink: #FFFFFF;
$base-50: #F6F9F9;
$base-100: #E8EEEE;
$base-200: #D1DCDC;
$base-300: #AFC1C1;
$base-400: #8DA5A5;
$base-500: #6E8787;
$base-600: #586A6A;
$base-700: #424D4D;
$base-800: #2D3434;
$base-900: #1D2020;
$base-hover: #314141;
$base-subtle: #C2CECE;

{
    "color": {
        "base": {
            "value": "#3D5151",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F9F9",
                "type": "color"
            },
            "100": {
                "value": "#E8EEEE",
                "type": "color"
            },
            "200": {
                "value": "#D1DCDC",
                "type": "color"
            },
            "300": {
                "value": "#AFC1C1",
                "type": "color"
            },
            "400": {
                "value": "#8DA5A5",
                "type": "color"
            },
            "500": {
                "value": "#6E8787",
                "type": "color"
            },
            "600": {
                "value": "#586A6A",
                "type": "color"
            },
            "700": {
                "value": "#424D4D",
                "type": "color"
            },
            "800": {
                "value": "#2D3434",
                "type": "color"
            },
            "900": {
                "value": "#1D2020",
                "type": "color"
            }
        }
    }
}

Palettes built on #3D5151

Color Lab

Pairs with #3D5151

UI roles & guardrails

In real applications

Scales

Every model

Export