What color is #2B3B33?

#2B3B33 is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(43, 59, 51), and in HSL hsl(150, 16%, 20%).

Is #2B3B33 accessible as text?

On white, #2B3B33 has a contrast ratio of 11.82:1 (passes WCAG AA for body text); on black it is 1.78:1 (fails). For text placed on #2B3B33, use white for the best readability.

What is the closest Tailwind color to #2B3B33?

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

What colors go well with #2B3B33?

As a neutral, #2B3B33 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 #2B3B33 the same as CSS darkslategray?

No — #2B3B33 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.

#2B3B33 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2B3B33

Not just a swatch — here's how #2B3B33 works with other colors. Named schemes with #2B3B33 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #2B3B33 Secondary #496C3E Accent #AB6D00 Surface #EEEAD6 Anchor #3C2F20

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

Vintage Leather Lead · 5 colors

Lead #2B3B33 Secondary #744F1A Surface #E5DBC0 Accent #3B5141 Anchor #5B2320

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 #2B3B33 Surface #EDEADC 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.

Luxury Packaging Feature · 5 colors

Feature #2B3B33 Anchor #141210 Accent #BEA74C Secondary #202C26 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 #2B3B33 Secondary #585E5B 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.

Build a working theme in the generator →

Color Lab

How #2B3B33 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 47/100

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 32/100

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 10/100

Very low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 30/100

Low

Workable accent with care around contrast.

Surface fit 56/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 95/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #2B3B33

For UI

For branding

For interior

For fashion

People also use #2B3B33 with

Hunter Green Onyx Bistre Platinum Dark Slate Gray

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 #D1DBD6 for cards and hover fills. Tint 80

Avoid beside #2B3B38 — 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 #2B3B33 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: #2B3B33;
  --color-base-rgb: 43 59 51;
  --color-base-oklch: oklch(33.5% 0.025 163.0);
  --color-50: #F6F9F7;
  --color-100: #E7EEEB;
  --color-200: #D0DDD6;
  --color-300: #ADC2B8;
  --color-400: #8CA699;
  --color-500: #6C887A;
  --color-600: #576B61;
  --color-700: #414E47;
  --color-800: #2D3430;
  --color-900: #1C211F;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F6F9F7',
    100: '#E7EEEB',
    200: '#D0DDD6',
    300: '#ADC2B8',
    400: '#8CA699',
    500: '#6C887A',
    600: '#576B61',
    700: '#414E47',
    800: '#2D3430',
    900: '#1C211F',
  },
}

$base: #2B3B33;
$base-ink: #FFFFFF;
$base-50: #F6F9F7;
$base-100: #E7EEEB;
$base-200: #D0DDD6;
$base-300: #ADC2B8;
$base-400: #8CA699;
$base-500: #6C887A;
$base-600: #576B61;
$base-700: #414E47;
$base-800: #2D3430;
$base-900: #1C211F;
$base-hover: #222F29;
$base-subtle: #BAC9C2;

{
    "color": {
        "base": {
            "value": "#2B3B33",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F9F7",
                "type": "color"
            },
            "100": {
                "value": "#E7EEEB",
                "type": "color"
            },
            "200": {
                "value": "#D0DDD6",
                "type": "color"
            },
            "300": {
                "value": "#ADC2B8",
                "type": "color"
            },
            "400": {
                "value": "#8CA699",
                "type": "color"
            },
            "500": {
                "value": "#6C887A",
                "type": "color"
            },
            "600": {
                "value": "#576B61",
                "type": "color"
            },
            "700": {
                "value": "#414E47",
                "type": "color"
            },
            "800": {
                "value": "#2D3430",
                "type": "color"
            },
            "900": {
                "value": "#1C211F",
                "type": "color"
            }
        }
    }
}