What color is #39313F?

#39313F is a dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(57, 49, 63), and in HSL hsl(274, 13%, 22%).

Is #39313F accessible as text?

On white, #39313F has a contrast ratio of 12.46:1 (passes WCAG AA for body text); on black it is 1.69:1 (fails). For text placed on #39313F, use white for the best readability.

What is the closest Tailwind color to #39313F?

The nearest Tailwind CSS token is zinc-700 (#3F3F46).

What colors go well with #39313F?

As a neutral, #39313F 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 #39313F the same as CSS darkslategray?

No — #39313F 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.

#39313F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #39313F

Not just a swatch — here's how #39313F works with other colors. Named schemes with #39313F in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #39313F Secondary #7E4630 Surface #EDD8C1 Accent #355249 Anchor #592236

Onyx 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 #39313F Surface #F1E8DC Highlight #F8F0E7 Secondary #BDADA1 Ink #2C2723

Onyx 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.

Luxury Packaging Feature · 5 colors

Feature #39313F Anchor #141210 Accent #D99954 Secondary #2C2630 Surface #F3EDE3

Onyx carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #39313F Secondary #5C595E Support #9C9088 Ink #18140F

Onyx 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 Onyx carrying the quiet middle.

Berry & Cream Lead · 5 colors

Lead #39313F Surface #F5E6D7 Anchor #5C213F Accent #E5C2C7 Secondary #332B2F

Onyx sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

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Color Lab

How #39313F 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 49/100

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 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 65/100

High

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 29/100

Low

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

Surface fit 56/100

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 #39313F

For UI

For branding

For interior

For fashion

People also use #39313F with

Charcoal Onyx Taupe Gainsboro

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 12.5:1. Use

Subtle surface Use #D8D3DB for cards and hover fills. Tint 80

Avoid beside #3E313F — 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 #39313F 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: #39313F;
  --color-base-rgb: 57 49 63;
  --color-base-oklch: oklch(32.7% 0.027 310.6);
  --color-50: #F7F6F8;
  --color-100: #EBE8ED;
  --color-200: #D7D1DB;
  --color-300: #B9AFC0;
  --color-400: #9A8EA4;
  --color-500: #7C6F86;
  --color-600: #625969;
  --color-700: #48424D;
  --color-800: #312D34;
  --color-900: #1F1D20;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F7F6F8',
    100: '#EBE8ED',
    200: '#D7D1DB',
    300: '#B9AFC0',
    400: '#9A8EA4',
    500: '#7C6F86',
    600: '#625969',
    700: '#48424D',
    800: '#312D34',
    900: '#1F1D20',
  },
}

$base: #39313F;
$base-ink: #FFFFFF;
$base-50: #F7F6F8;
$base-100: #EBE8ED;
$base-200: #D7D1DB;
$base-300: #B9AFC0;
$base-400: #9A8EA4;
$base-500: #7C6F86;
$base-600: #625969;
$base-700: #48424D;
$base-800: #312D34;
$base-900: #1F1D20;
$base-hover: #2E2733;
$base-subtle: #C4BDC9;

{
    "color": {
        "base": {
            "value": "#39313F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F6F8",
                "type": "color"
            },
            "100": {
                "value": "#EBE8ED",
                "type": "color"
            },
            "200": {
                "value": "#D7D1DB",
                "type": "color"
            },
            "300": {
                "value": "#B9AFC0",
                "type": "color"
            },
            "400": {
                "value": "#9A8EA4",
                "type": "color"
            },
            "500": {
                "value": "#7C6F86",
                "type": "color"
            },
            "600": {
                "value": "#625969",
                "type": "color"
            },
            "700": {
                "value": "#48424D",
                "type": "color"
            },
            "800": {
                "value": "#312D34",
                "type": "color"
            },
            "900": {
                "value": "#1F1D20",
                "type": "color"
            }
        }
    }
}