What color is #2B3937?

#2B3937 is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(43, 57, 55), and in HSL hsl(171, 14%, 20%).

Is #2B3937 accessible as text?

On white, #2B3937 has a contrast ratio of 12.05:1 (passes WCAG AA for body text); on black it is 1.74:1 (fails). For text placed on #2B3937, use white for the best readability.

What is the closest Tailwind color to #2B3937?

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

What colors go well with #2B3937?

As a neutral, #2B3937 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 #2B3937 the same as CSS darkslategray?

No — #2B3937 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.

#2B3937 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2B3937

Not just a swatch — here's how #2B3937 works with other colors. Named schemes with #2B3937 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #2B3937 Surface #14161A Highlight #F4F6F8 Secondary #586771 Accent #4C5957

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 #2B3937 Secondary #725018 Surface #E4DCC0 Accent #3A5142 Anchor #5B241D

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 #2B3937 Surface #EDEADC Highlight #F5F2E7 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 #2B3937 Anchor #141210 Accent #BAA94D Secondary #1E2C2A 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 #2B3937 Secondary #575C5C 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.

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Color Lab

How #2B3937 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 46/100

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 8/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 27/100

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 28/100

Low

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

Surface fit 58/100

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 #2B3937

For UI

For branding

For interior

For fashion

People also use #2B3937 with

Dark Slate Gray Gunmetal Gray Bistre 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 12.0:1. Use

Subtle surface Use #D2DAD9 for cards and hover fills. Tint 80

Avoid beside #2C383A — 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 #2B3937 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: #2B3937;
  --color-base-rgb: 43 57 55;
  --color-base-oklch: oklch(33.1% 0.019 185.6);
  --color-50: #F6F9F8;
  --color-100: #E8EEED;
  --color-200: #D1DCDA;
  --color-300: #AFC1BE;
  --color-400: #8DA5A1;
  --color-500: #6E8783;
  --color-600: #586A67;
  --color-700: #424D4B;
  --color-800: #2D3433;
  --color-900: #1D2020;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F6F9F8',
    100: '#E8EEED',
    200: '#D1DCDA',
    300: '#AFC1BE',
    400: '#8DA5A1',
    500: '#6E8783',
    600: '#586A67',
    700: '#424D4B',
    800: '#2D3433',
    900: '#1D2020',
  },
}

$base: #2B3937;
$base-ink: #FFFFFF;
$base-50: #F6F9F8;
$base-100: #E8EEED;
$base-200: #D1DCDA;
$base-300: #AFC1BE;
$base-400: #8DA5A1;
$base-500: #6E8783;
$base-600: #586A67;
$base-700: #424D4B;
$base-800: #2D3433;
$base-900: #1D2020;
$base-hover: #232F2D;
$base-subtle: #BBC8C6;

{
    "color": {
        "base": {
            "value": "#2B3937",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F9F8",
                "type": "color"
            },
            "100": {
                "value": "#E8EEED",
                "type": "color"
            },
            "200": {
                "value": "#D1DCDA",
                "type": "color"
            },
            "300": {
                "value": "#AFC1BE",
                "type": "color"
            },
            "400": {
                "value": "#8DA5A1",
                "type": "color"
            },
            "500": {
                "value": "#6E8783",
                "type": "color"
            },
            "600": {
                "value": "#586A67",
                "type": "color"
            },
            "700": {
                "value": "#424D4B",
                "type": "color"
            },
            "800": {
                "value": "#2D3433",
                "type": "color"
            },
            "900": {
                "value": "#1D2020",
                "type": "color"
            }
        }
    }
}