What color is #333C3A?

#333C3A is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(51, 60, 58), and in HSL hsl(167, 8%, 22%).

Is #333C3A accessible as text?

On white, #333C3A has a contrast ratio of 11.36:1 (passes WCAG AA for body text); on black it is 1.85:1 (fails). For text placed on #333C3A, use white for the best readability.

What is the closest Tailwind color to #333C3A?

The nearest Tailwind CSS token is neutral-700 (#404040).

What colors go well with #333C3A?

As a neutral, #333C3A 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 #333C3A the same as CSS darkslategray?

No — #333C3A 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.

#333C3A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #333C3A

Not just a swatch — here's how #333C3A works with other colors. Named schemes with #333C3A in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #333C3A Surface #14161A Highlight #F4F6F8 Secondary #586771 Accent #545C5A

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

Vintage Leather Lead · 5 colors

Lead #333C3A Secondary #734F19 Surface #E4DCC0 Accent #3A5142 Anchor #5B231E

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 #333C3A Surface #EDEADC Highlight #F5F1E7 Secondary #B5B19F Ink #2A2723

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 #333C3A Anchor #141210 Accent #BBA94C Secondary #1E2C29 Surface #F1EDE3

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 #333C3A Secondary #5D6060 Support #979286 Ink #16140F

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.

Build a working theme in the generator →

Color Lab

How #333C3A 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 38/100

Low

Middle-weight — neither delicate nor heavy.

Depth 61/100

High

Mid depth — usable as an accent or a muted ground.

Naturalness 9/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 27/100

Low

A faint retro warmth without tipping into sepia.

Luxury 62/100

High

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

Brand distinctiveness 5/100

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 59/100

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 #333C3A

For UI

For branding

For interior

For fashion

People also use #333C3A with

Iron Gray Onyx 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 11.4:1. Use

Subtle surface Use #D5DAD9 for cards and hover fills. Tint 80

Avoid beside #343C3D — 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 #333C3A 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: #333C3A;
  --color-base-rgb: 51 60 58;
  --color-base-oklch: oklch(34.7% 0.013 180.7);
  --color-50: #F7F8F8;
  --color-100: #E9ECEC;
  --color-200: #D3D9D8;
  --color-300: #B2BDBB;
  --color-400: #92A09D;
  --color-500: #73817E;
  --color-600: #5C6664;
  --color-700: #444B49;
  --color-800: #2F3232;
  --color-900: #1D201F;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F7F8F8',
    100: '#E9ECEC',
    200: '#D3D9D8',
    300: '#B2BDBB',
    400: '#92A09D',
    500: '#73817E',
    600: '#5C6664',
    700: '#444B49',
    800: '#2F3232',
    900: '#1D201F',
  },
}

$base: #333C3A;
$base-ink: #FFFFFF;
$base-50: #F7F8F8;
$base-100: #E9ECEC;
$base-200: #D3D9D8;
$base-300: #B2BDBB;
$base-400: #92A09D;
$base-500: #73817E;
$base-600: #5C6664;
$base-700: #444B49;
$base-800: #2F3232;
$base-900: #1D201F;
$base-hover: #29302F;
$base-subtle: #C0C7C5;

{
    "color": {
        "base": {
            "value": "#333C3A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F8F8",
                "type": "color"
            },
            "100": {
                "value": "#E9ECEC",
                "type": "color"
            },
            "200": {
                "value": "#D3D9D8",
                "type": "color"
            },
            "300": {
                "value": "#B2BDBB",
                "type": "color"
            },
            "400": {
                "value": "#92A09D",
                "type": "color"
            },
            "500": {
                "value": "#73817E",
                "type": "color"
            },
            "600": {
                "value": "#5C6664",
                "type": "color"
            },
            "700": {
                "value": "#444B49",
                "type": "color"
            },
            "800": {
                "value": "#2F3232",
                "type": "color"
            },
            "900": {
                "value": "#1D201F",
                "type": "color"
            }
        }
    }
}