What color is #055A3C?

#055A3C is a dark, vivid teal-green. In RGB it is rgb(5, 90, 60), and in HSL hsl(159, 89%, 19%).

Is #055A3C accessible as text?

On white, #055A3C has a contrast ratio of 8.29:1 (passes WCAG AA for body text); on black it is 2.53:1 (fails). For text placed on #055A3C, use white for the best readability.

What is the closest Tailwind color to #055A3C?

The nearest Tailwind CSS token is emerald-800 (#006045).

What colors go well with #055A3C?

#055A3C pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5C0524. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #055A3C below.

Is #055A3C good for buttons?

#055A3C works well for buttons and highlights, but use white text on #055A3C — black text only reaches 2.53:1, below the 4.5:1 needed for normal-size labels.

Is #055A3C the same as CSS darkslategray?

No — #055A3C 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.

#055A3C Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #055A3C

Not just a swatch — here's how #055A3C works with other colors. Named schemes with #055A3C in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #055A3C Secondary #496C3E Accent #AB6D00 Surface #EEEAD6 Anchor #3C2F20

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

Coastal Morning Lead · 5 colors

Lead #055A3C Accent #A7C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1B3648

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 #055A3C 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 #055A3C Secondary #744E1A Surface #E5DBC0 Accent #3B5141 Anchor #5B2320

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.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #055A3C Secondary #63796D Support #989286 Ink #17140F

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 #055A3C 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 40/100

Neutral

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

Softness 37/100

Low

Middle-weight — neither delicate nor heavy.

Depth 58/100

Moderate

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

Naturalness 74/100

High

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

Vintage feel 58/100

Moderate

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 63/100

High

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

Brand distinctiveness 24/100

Low

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

UI accent fit 71/100

High

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

Surface fit 31/100

Low

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #055A3C

For UI

For branding

For interior

For fashion

People also use #055A3C with

Green Charcoal 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 8.3:1. Use

Subtle surface Use #BBF0DE for cards and hover fills. Tint 80

Avoid beside #055C5A — 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 #055A3C 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: #055A3C;
  --color-base-rgb: 5 90 60;
  --color-base-oklch: oklch(41.4% 0.089 161.8);
  --color-50: #F0FEF9;
  --color-100: #D8FDF0;
  --color-200: #B2FAE1;
  --color-300: #7EF1C9;
  --color-400: #4FE3AF;
  --color-500: #2CC992;
  --color-600: #2A9872;
  --color-700: #236B52;
  --color-800: #1B4637;
  --color-900: #132B22;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F0FEF9',
    100: '#D8FDF0',
    200: '#B2FAE1',
    300: '#7EF1C9',
    400: '#4FE3AF',
    500: '#2CC992',
    600: '#2A9872',
    700: '#236B52',
    800: '#1B4637',
    900: '#132B22',
  },
}

$base: #055A3C;
$base-ink: #FFFFFF;
$base-50: #F0FEF9;
$base-100: #D8FDF0;
$base-200: #B2FAE1;
$base-300: #7EF1C9;
$base-400: #4FE3AF;
$base-500: #2CC992;
$base-600: #2A9872;
$base-700: #236B52;
$base-800: #1B4637;
$base-900: #132B22;
$base-hover: #044931;
$base-subtle: #97EBCE;

{
    "color": {
        "base": {
            "value": "#055A3C",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEF9",
                "type": "color"
            },
            "100": {
                "value": "#D8FDF0",
                "type": "color"
            },
            "200": {
                "value": "#B2FAE1",
                "type": "color"
            },
            "300": {
                "value": "#7EF1C9",
                "type": "color"
            },
            "400": {
                "value": "#4FE3AF",
                "type": "color"
            },
            "500": {
                "value": "#2CC992",
                "type": "color"
            },
            "600": {
                "value": "#2A9872",
                "type": "color"
            },
            "700": {
                "value": "#236B52",
                "type": "color"
            },
            "800": {
                "value": "#1B4637",
                "type": "color"
            },
            "900": {
                "value": "#132B22",
                "type": "color"
            }
        }
    }
}

Palettes built on #055A3C

Color Lab

Pairs with #055A3C

UI roles & guardrails

In real applications

Scales

Every model

Export