What color is #2F3A33?

#2F3A33 is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(47, 58, 51), and in HSL hsl(142, 10%, 21%).

Is #2F3A33 accessible as text?

On white, #2F3A33 has a contrast ratio of 11.84:1 (passes WCAG AA for body text); on black it is 1.77:1 (fails). For text placed on #2F3A33, use white for the best readability.

What is the closest Tailwind color to #2F3A33?

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

What colors go well with #2F3A33?

As a neutral, #2F3A33 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 #2F3A33 the same as CSS darkslategray?

No — #2F3A33 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.

#2F3A33 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2F3A33

Not just a swatch — here's how #2F3A33 works with other colors. Named schemes with #2F3A33 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #2F3A33 Secondary #4A6C3D Accent #AC6C00 Surface #EEEAD6 Anchor #3C2F20

Onyx leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.

Tech Product Signal · 5 colors

Signal #2F3A33 Surface #13161A Highlight #F4F6F8 Secondary #586771 Accent #4F5A53

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 #2F3A33 Secondary #744E1A Surface #E5DBC0 Accent #3C5140 Anchor #5B2321

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 #2F3A33 Surface #EEEADC Highlight #F5F1E7 Secondary #B6B09F 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.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #2F3A33 Secondary #5A5E5B Support #989286 Ink #17140F

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.

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Color Lab

How #2F3A33 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 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 62/100

High

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

Naturalness 27/100

Low

Loosely natural — an earthy edge without being rustic.

Vintage feel 31/100

Low

A faint retro warmth without tipping into sepia.

Luxury 64/100

High

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

Brand distinctiveness 7/100

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 57/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 96/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #2F3A33

For UI

For branding

For interior

For fashion

People also use #2F3A33 with

Outer Space Onyx Platinum

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 11.8:1. Use

Subtle surface Use #D4DAD6 for cards and hover fills. Tint 80

Avoid beside #303B38 — 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 #2F3A33 at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #2F3A33;
  --color-base-rgb: 47 58 51;
  --color-base-oklch: oklch(33.6% 0.019 157.3);
  --color-50: #F7F8F7;
  --color-100: #E8EDEA;
  --color-200: #D2DAD5;
  --color-300: #B1BEB6;
  --color-400: #91A197;
  --color-500: #728378;
  --color-600: #5B675F;
  --color-700: #434B46;
  --color-800: #2E3330;
  --color-900: #1D201E;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F7F8F7',
    100: '#E8EDEA',
    200: '#D2DAD5',
    300: '#B1BEB6',
    400: '#91A197',
    500: '#728378',
    600: '#5B675F',
    700: '#434B46',
    800: '#2E3330',
    900: '#1D201E',
  },
}

$base: #2F3A33;
$base-ink: #FFFFFF;
$base-50: #F7F8F7;
$base-100: #E8EDEA;
$base-200: #D2DAD5;
$base-300: #B1BEB6;
$base-400: #91A197;
$base-500: #728378;
$base-600: #5B675F;
$base-700: #434B46;
$base-800: #2E3330;
$base-900: #1D201E;
$base-hover: #272F2A;
$base-subtle: #BEC7C1;

{
    "color": {
        "base": {
            "value": "#2F3A33",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F8F7",
                "type": "color"
            },
            "100": {
                "value": "#E8EDEA",
                "type": "color"
            },
            "200": {
                "value": "#D2DAD5",
                "type": "color"
            },
            "300": {
                "value": "#B1BEB6",
                "type": "color"
            },
            "400": {
                "value": "#91A197",
                "type": "color"
            },
            "500": {
                "value": "#728378",
                "type": "color"
            },
            "600": {
                "value": "#5B675F",
                "type": "color"
            },
            "700": {
                "value": "#434B46",
                "type": "color"
            },
            "800": {
                "value": "#2E3330",
                "type": "color"
            },
            "900": {
                "value": "#1D201E",
                "type": "color"
            }
        }
    }
}