What color is #045D39?

#045D39 is a dark, vivid teal-green. In RGB it is rgb(4, 93, 57), and in HSL hsl(156, 92%, 19%).

Is #045D39 accessible as text?

On white, #045D39 has a contrast ratio of 7.98:1 (passes WCAG AA for body text); on black it is 2.63:1 (fails). For text placed on #045D39, use white for the best readability.

What is the closest Tailwind color to #045D39?

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

What colors go well with #045D39?

#045D39 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5D0428. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #045D39 below.

Is #045D39 good for buttons?

#045D39 works well for buttons and highlights, but use white text on #045D39 — black text only reaches 2.63:1, below the 4.5:1 needed for normal-size labels.

Is #045D39 the same as CSS darkgreen?

No — #045D39 is not the CSS named color darkgreen, but darkgreen (#006400) is the closest CSS named color.

#045D39 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #045D39

Not just a swatch — here's how #045D39 works with other colors. Named schemes with #045D39 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #045D39 Secondary #4A6C3D Accent #AC6D00 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 #045D39 Accent #A8C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1A3648

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

Vintage Leather Lead · 5 colors

Lead #045D39 Secondary #744E1A Surface #E5DBC0 Accent #3C5140 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.

Berry & Cream Lead · 5 colors

Lead #045D39 Surface #F0E8D6 Anchor #612028 Accent #E5C4B9 Secondary #342B2C

Castleton Green sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #045D39 Secondary #657B6E 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 #045D39 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 41/100

Neutral

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

Softness 37/100

Low

Middle-weight — neither delicate nor heavy.

Depth 57/100

Moderate

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

Naturalness 85/100

Very high

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

Vintage feel 57/100

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 26/100

Low

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

UI accent fit 76/100

High

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

Surface fit 28/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 80/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #045D39

For UI

For branding

For interior

For fashion

People also use #045D39 with

Green Dark Slate Gray Tyrian Purple Platinum

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 8.0:1. Use

Subtle surface Use #BAF1DB for cards and hover fills. Tint 80

Avoid beside #045D57 — 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 #045D39 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: #045D39;
  --color-base-rgb: 4 93 57;
  --color-base-oklch: oklch(42.2% 0.096 158.3);
  --color-50: #F0FEF9;
  --color-100: #D8FDEE;
  --color-200: #B1FCDE;
  --color-300: #7CF3C3;
  --color-400: #4DE5A8;
  --color-500: #29CB8B;
  --color-600: #289A6C;
  --color-700: #226D4F;
  --color-800: #1A4735;
  --color-900: #122B21;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F0FEF9',
    100: '#D8FDEE',
    200: '#B1FCDE',
    300: '#7CF3C3',
    400: '#4DE5A8',
    500: '#29CB8B',
    600: '#289A6C',
    700: '#226D4F',
    800: '#1A4735',
    900: '#122B21',
  },
}

$base: #045D39;
$base-ink: #FFFFFF;
$base-50: #F0FEF9;
$base-100: #D8FDEE;
$base-200: #B1FCDE;
$base-300: #7CF3C3;
$base-400: #4DE5A8;
$base-500: #29CB8B;
$base-600: #289A6C;
$base-700: #226D4F;
$base-800: #1A4735;
$base-900: #122B21;
$base-hover: #034A2E;
$base-subtle: #96ECCA;

{
    "color": {
        "base": {
            "value": "#045D39",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEF9",
                "type": "color"
            },
            "100": {
                "value": "#D8FDEE",
                "type": "color"
            },
            "200": {
                "value": "#B1FCDE",
                "type": "color"
            },
            "300": {
                "value": "#7CF3C3",
                "type": "color"
            },
            "400": {
                "value": "#4DE5A8",
                "type": "color"
            },
            "500": {
                "value": "#29CB8B",
                "type": "color"
            },
            "600": {
                "value": "#289A6C",
                "type": "color"
            },
            "700": {
                "value": "#226D4F",
                "type": "color"
            },
            "800": {
                "value": "#1A4735",
                "type": "color"
            },
            "900": {
                "value": "#122B21",
                "type": "color"
            }
        }
    }
}