What color is #40323D?

#40323D is a dark low-chroma warm gray with a subtle warm cast. In RGB it is rgb(64, 50, 61), and in HSL hsl(313, 12%, 22%).

Is #40323D accessible as text?

On white, #40323D has a contrast ratio of 12.06:1 (passes WCAG AA for body text); on black it is 1.74:1 (fails). For text placed on #40323D, use white for the best readability.

What is the closest Tailwind color to #40323D?

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

What colors go well with #40323D?

As a neutral, #40323D 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 #40323D the same as CSS darkslategray?

No — #40323D 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.

#40323D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #40323D

Not just a swatch — here's how #40323D works with other colors. Named schemes with #40323D in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #40323D Secondary #7D472D Surface #ECD8C1 Accent #464F38 Anchor #592233

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 #40323D Surface #F1E8DC Highlight #F7F0E7 Secondary #BCADA1 Ink #2B2723

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 #40323D Anchor #141210 Accent #D69A52 Secondary #2F252D 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 #F7F4EF Accent #40323D Secondary #605B5F Support #9C9087 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 #40323D Surface #F4E6D7 Anchor #5D203D Accent #E6C2C5 Secondary #332B2E

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 #40323D 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 52/100

Neutral

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

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 62/100

High

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

Naturalness 2/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 38/100

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 31/100

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 #40323D

For UI

For branding

For interior

For fashion

People also use #40323D with

Eggplant Onyx Gainsboro Taupe

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 12.1:1. Use

Subtle surface Use #DBD4D9 for cards and hover fills. Tint 80

Avoid beside #3F3137 — 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 #40323D 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: #40323D;
  --color-base-rgb: 64 50 61;
  --color-base-oklch: oklch(33.7% 0.027 333.7);
  --color-50: #F8F6F8;
  --color-100: #EDE8EC;
  --color-200: #DBD1D9;
  --color-300: #BFB0BC;
  --color-400: #A38F9F;
  --color-500: #857080;
  --color-600: #685965;
  --color-700: #4C434A;
  --color-800: #332E32;
  --color-900: #201D20;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F8F6F8',
    100: '#EDE8EC',
    200: '#DBD1D9',
    300: '#BFB0BC',
    400: '#A38F9F',
    500: '#857080',
    600: '#685965',
    700: '#4C434A',
    800: '#332E32',
    900: '#201D20',
  },
}

$base: #40323D;
$base-ink: #FFFFFF;
$base-50: #F8F6F8;
$base-100: #EDE8EC;
$base-200: #DBD1D9;
$base-300: #BFB0BC;
$base-400: #A38F9F;
$base-500: #857080;
$base-600: #685965;
$base-700: #4C434A;
$base-800: #332E32;
$base-900: #201D20;
$base-hover: #322730;
$base-subtle: #C9BEC6;

{
    "color": {
        "base": {
            "value": "#40323D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F6F8",
                "type": "color"
            },
            "100": {
                "value": "#EDE8EC",
                "type": "color"
            },
            "200": {
                "value": "#DBD1D9",
                "type": "color"
            },
            "300": {
                "value": "#BFB0BC",
                "type": "color"
            },
            "400": {
                "value": "#A38F9F",
                "type": "color"
            },
            "500": {
                "value": "#857080",
                "type": "color"
            },
            "600": {
                "value": "#685965",
                "type": "color"
            },
            "700": {
                "value": "#4C434A",
                "type": "color"
            },
            "800": {
                "value": "#332E32",
                "type": "color"
            },
            "900": {
                "value": "#201D20",
                "type": "color"
            }
        }
    }
}