What color is #313339?

#313339 is a dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(49, 51, 57), and in HSL hsl(225, 8%, 21%).

Is #313339 accessible as text?

On white, #313339 has a contrast ratio of 12.63:1 (passes WCAG AA for body text); on black it is 1.66:1 (fails). For text placed on #313339, use white for the best readability.

What is the closest Tailwind color to #313339?

The nearest Tailwind CSS token is zinc-800 (#27272A).

What colors go well with #313339?

As a neutral, #313339 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 #313339 the same as CSS darkslategray?

No — #313339 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.

#313339 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #313339

Not just a swatch — here's how #313339 works with other colors. Named schemes with #313339 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #313339 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #515359

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

Vintage Leather Lead · 5 colors

Lead #313339 Secondary #7F4535 Surface #EED7C2 Accent #365247 Anchor #582239

Gunmetal 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.

Japanese Sand Base · 5 colors

Base #313339 Surface #F2E8DD Highlight #F8F0E7 Secondary #BEACA2 Ink #2C2724

Gunmetal Gray 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.

Coastal Morning Lead · 5 colors

Lead #313339 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #313339 Secondary #57585B Support #9D8F88 Ink #18140F

Gunmetal 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 Gunmetal Gray carrying the quiet middle.

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Color Lab

How #313339 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 48/100

Neutral

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

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 63/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 25/100

Low

Clean and current — no dusty, aged cast.

Luxury 64/100

High

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

Brand distinctiveness 4/100

Very low

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

UI accent fit 24/100

Low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 61/100

High

Calm enough for large fills — backgrounds, cards, sections.

Print safety 98/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #313339

For UI

For branding

For interior

For fashion

People also use #313339 with

Outer Space Gunmetal Gray Onyx Gainsboro Charcoal

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 12.6:1. Use

Subtle surface Use #D4D6D9 for cards and hover fills. Tint 80

Avoid beside #32313A — 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 #313339 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: #313339;
  --color-base-rgb: 49 51 57;
  --color-base-oklch: oklch(32.1% 0.011 271.1);
  --color-50: #F7F7F8;
  --color-100: #E9EAEC;
  --color-200: #D3D5D9;
  --color-300: #B2B5BD;
  --color-400: #9296A0;
  --color-500: #737781;
  --color-600: #5C5E66;
  --color-700: #44464B;
  --color-800: #2F2F32;
  --color-900: #1D1E20;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  gunmetal-gray: {
    50: '#F7F7F8',
    100: '#E9EAEC',
    200: '#D3D5D9',
    300: '#B2B5BD',
    400: '#9296A0',
    500: '#737781',
    600: '#5C5E66',
    700: '#44464B',
    800: '#2F2F32',
    900: '#1D1E20',
  },
}

$base: #313339;
$base-ink: #FFFFFF;
$base-50: #F7F7F8;
$base-100: #E9EAEC;
$base-200: #D3D5D9;
$base-300: #B2B5BD;
$base-400: #9296A0;
$base-500: #737781;
$base-600: #5C5E66;
$base-700: #44464B;
$base-800: #2F2F32;
$base-900: #1D1E20;
$base-hover: #27292E;
$base-subtle: #BFC1C6;

{
    "color": {
        "base": {
            "value": "#313339",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F7F8",
                "type": "color"
            },
            "100": {
                "value": "#E9EAEC",
                "type": "color"
            },
            "200": {
                "value": "#D3D5D9",
                "type": "color"
            },
            "300": {
                "value": "#B2B5BD",
                "type": "color"
            },
            "400": {
                "value": "#9296A0",
                "type": "color"
            },
            "500": {
                "value": "#737781",
                "type": "color"
            },
            "600": {
                "value": "#5C5E66",
                "type": "color"
            },
            "700": {
                "value": "#44464B",
                "type": "color"
            },
            "800": {
                "value": "#2F2F32",
                "type": "color"
            },
            "900": {
                "value": "#1D1E20",
                "type": "color"
            }
        }
    }
}

Palettes built on #313339

Color Lab

Pairs with #313339

UI roles & guardrails

In real applications

Scales

Every model

Export