What color is #21352B?

#21352B is a very dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(33, 53, 43), and in HSL hsl(150, 23%, 17%).

Is #21352B accessible as text?

On white, #21352B has a contrast ratio of 13.05:1 (passes WCAG AA for body text); on black it is 1.61:1 (fails). For text placed on #21352B, use white for the best readability.

What is the closest Tailwind color to #21352B?

The nearest Tailwind CSS token is zinc-800 (#27272A).

What colors go well with #21352B?

As a neutral, #21352B 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 #21352B the same as CSS darkslategray?

No — #21352B 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.

#21352B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #21352B

Not just a swatch — here's how #21352B works with other colors. Named schemes with #21352B in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #21352B Secondary #496C3E Accent #AB6D00 Surface #EEEAD6 Anchor #3C2F20

Bottle Green 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 #21352B Secondary #744F1A Surface #E5DBC0 Accent #3B5141 Anchor #5B2320

Bottle Green 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 #21352B Surface #EDEADC Highlight #F5F1E7 Secondary #B6B09F Ink #2A2723

Bottle Green 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 #21352B Anchor #141210 Accent #BEA74C Secondary #202C26 Surface #F1EDE3

Bottle Green 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 #21352B Secondary #505753 Support #989286 Ink #17140F

Bottle Green 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 Bottle Green carrying the quiet middle.

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Color Lab

How #21352B 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 32/100

Low

Middle-weight — neither delicate nor heavy.

Depth 65/100

High

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

Naturalness 32/100

Low

Loosely natural — an earthy edge without being rustic.

Vintage feel 32/100

Low

A faint retro warmth without tipping into sepia.

Luxury 67/100

High

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

Brand distinctiveness 12/100

Very low

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

UI accent fit 26/100

Low

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

Surface fit 55/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 94/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #21352B

For UI

For branding

For interior

For fashion

People also use #21352B with

Brunswick Green Gunmetal Gray 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 13.1:1. Use

Subtle surface Use #CEDCD5 for cards and hover fills. Tint 80

Avoid beside #213532 — 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 #21352B 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: #21352B;
  --color-base-rgb: 33 53 43;
  --color-base-oklch: oklch(30.8% 0.032 162.1);
  --color-50: #F5F9F7;
  --color-100: #E6F0EB;
  --color-200: #CDE0D6;
  --color-300: #A9C6B8;
  --color-400: #86AC99;
  --color-500: #668F7A;
  --color-600: #536F61;
  --color-700: #3E5147;
  --color-800: #2B3630;
  --color-900: #1B221F;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  bottle-green: {
    50: '#F5F9F7',
    100: '#E6F0EB',
    200: '#CDE0D6',
    300: '#A9C6B8',
    400: '#86AC99',
    500: '#668F7A',
    600: '#536F61',
    700: '#3E5147',
    800: '#2B3630',
    900: '#1B221F',
  },
}

$base: #21352B;
$base-ink: #FFFFFF;
$base-50: #F5F9F7;
$base-100: #E6F0EB;
$base-200: #CDE0D6;
$base-300: #A9C6B8;
$base-400: #86AC99;
$base-500: #668F7A;
$base-600: #536F61;
$base-700: #3E5147;
$base-800: #2B3630;
$base-900: #1B221F;
$base-hover: #1B2B23;
$base-subtle: #B4CBC0;

{
    "color": {
        "base": {
            "value": "#21352B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F9F7",
                "type": "color"
            },
            "100": {
                "value": "#E6F0EB",
                "type": "color"
            },
            "200": {
                "value": "#CDE0D6",
                "type": "color"
            },
            "300": {
                "value": "#A9C6B8",
                "type": "color"
            },
            "400": {
                "value": "#86AC99",
                "type": "color"
            },
            "500": {
                "value": "#668F7A",
                "type": "color"
            },
            "600": {
                "value": "#536F61",
                "type": "color"
            },
            "700": {
                "value": "#3E5147",
                "type": "color"
            },
            "800": {
                "value": "#2B3630",
                "type": "color"
            },
            "900": {
                "value": "#1B221F",
                "type": "color"
            }
        }
    }
}