What color is #03533D?

#03533D is a very dark, vivid teal-green. In RGB it is rgb(3, 83, 61), and in HSL hsl(164, 93%, 17%).

Is #03533D accessible as text?

On white, #03533D has a contrast ratio of 9.10:1 (passes WCAG AA for body text); on black it is 2.31:1 (fails). For text placed on #03533D, use white for the best readability.

What is the closest Tailwind color to #03533D?

The nearest Tailwind CSS token is emerald-900 (#004F3B).

What colors go well with #03533D?

#03533D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #540319. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #03533D below.

Is #03533D good for buttons?

#03533D works well for buttons and highlights, but use white text on #03533D — black text only reaches 2.31:1, below the 4.5:1 needed for normal-size labels.

Is #03533D the same as CSS darkslategray?

No — #03533D 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.

#03533D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #03533D

Not just a swatch — here's how #03533D works with other colors. Named schemes with #03533D in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #03533D Accent #A7C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1B3549

Castleton Green opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Nordic Calm Accent · 5 colors

Accent #03533D Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

Castleton Green keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Vintage Leather Lead · 5 colors

Lead #03533D Secondary #744F1A Surface #E5DBC0 Accent #3B5141 Anchor #5B231F

Castleton 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.

Modern Café Dominant · 5 colors

Dominant #03533D Anchor #382B1E Surface #ECE4D0 Accent #849C6F Secondary #3A3833

Castleton Green anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #03533D Secondary #5E7269 Support #989286 Ink #16140F

Castleton 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 Castleton Green carrying the quiet middle.

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Color Lab

How #03533D 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 39/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 59/100

Moderate

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

Naturalness 57/100

Moderate

Organic, earthy character — at home in wellness, food and craft brands.

Vintage feel 51/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 64/100

High

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

Brand distinctiveness 21/100

Low

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

UI accent fit 62/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 35/100

Low

Usable as a tinted surface in measured doses.

Print safety 85/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #03533D

For UI

For branding

For interior

For fashion

People also use #03533D with

Green Prussian Blue Oxblood 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 9.1:1. Use

Subtle surface Use #B8F1E2 for cards and hover fills. Tint 80

Avoid beside #034E54 — 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 #03533D 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: #03533D;
  --color-base-rgb: 3 83 61;
  --color-base-oklch: oklch(39.3% 0.079 167.3);
  --color-50: #F0FEFB;
  --color-100: #D8FDF3;
  --color-200: #B1FCE8;
  --color-300: #7CF4D4;
  --color-400: #4CE6BD;
  --color-500: #29CCA1;
  --color-600: #279B7C;
  --color-700: #226D59;
  --color-800: #1A473B;
  --color-900: #122B24;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F0FEFB',
    100: '#D8FDF3',
    200: '#B1FCE8',
    300: '#7CF4D4',
    400: '#4CE6BD',
    500: '#29CCA1',
    600: '#279B7C',
    700: '#226D59',
    800: '#1A473B',
    900: '#122B24',
  },
}

$base: #03533D;
$base-ink: #FFFFFF;
$base-50: #F0FEFB;
$base-100: #D8FDF3;
$base-200: #B1FCE8;
$base-300: #7CF4D4;
$base-400: #4CE6BD;
$base-500: #29CCA1;
$base-600: #279B7C;
$base-700: #226D59;
$base-800: #1A473B;
$base-900: #122B24;
$base-hover: #024332;
$base-subtle: #93ECD4;

{
    "color": {
        "base": {
            "value": "#03533D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEFB",
                "type": "color"
            },
            "100": {
                "value": "#D8FDF3",
                "type": "color"
            },
            "200": {
                "value": "#B1FCE8",
                "type": "color"
            },
            "300": {
                "value": "#7CF4D4",
                "type": "color"
            },
            "400": {
                "value": "#4CE6BD",
                "type": "color"
            },
            "500": {
                "value": "#29CCA1",
                "type": "color"
            },
            "600": {
                "value": "#279B7C",
                "type": "color"
            },
            "700": {
                "value": "#226D59",
                "type": "color"
            },
            "800": {
                "value": "#1A473B",
                "type": "color"
            },
            "900": {
                "value": "#122B24",
                "type": "color"
            }
        }
    }
}

Palettes built on #03533D

Color Lab

Pairs with #03533D

UI roles & guardrails

In real applications

Scales

Every model

Export