What color is #024E21?

#024E21 is a very dark, vivid green. In RGB it is rgb(2, 78, 33), and in HSL hsl(144, 95%, 16%).

Is #024E21 accessible as text?

On white, #024E21 has a contrast ratio of 9.93:1 (passes WCAG AA for body text); on black it is 2.11:1 (fails). For text placed on #024E21, use white for the best readability.

What is the closest Tailwind color to #024E21?

The nearest Tailwind CSS token is green-900 (#0D542B).

What colors go well with #024E21?

#024E21 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #500231. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #024E21 below.

Is #024E21 good for buttons?

#024E21 works well for buttons and highlights, but use white text on #024E21 — black text only reaches 2.11:1, below the 4.5:1 needed for normal-size labels.

Is #024E21 the same as CSS darkgreen?

No — #024E21 is not the CSS named color darkgreen, but darkgreen (#006400) is the closest CSS named color.

#024E21 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #024E21

Not just a swatch — here's how #024E21 works with other colors. Named schemes with #024E21 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #024E21 Secondary #4B6C3C Accent #AD6C00 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.

Luxury Packaging Feature · 5 colors

Feature #024E21 Anchor #141210 Accent #C0A74B Secondary #222C24 Surface #F1EDE3

Castleton 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.

Moody Editorial Color · 5 colors

Color #024E21 Anchor #292A2E Secondary #6C6F74 Surface #EBE6DA Accent #002C1B

Castleton Green adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Castleton Green.

Vintage Leather Lead · 5 colors

Lead #024E21 Secondary #754E1B Surface #E5DBC0 Accent #3C5140 Anchor #5B2321

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 #024E21 Secondary #586C5C 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 #024E21 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 45/100

Neutral

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 63/100

High

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

Naturalness 100/100

Very high

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

Vintage feel 52/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

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

Brand distinctiveness 39/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 60/100

High

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

Surface fit 30/100

Low

Usable as a tinted surface in measured doses.

Print safety 78/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #024E21

For UI

For branding

For interior

For fashion

People also use #024E21 with

Green Brunswick Green Deep Purple Platinum Hunter Green

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 9.9:1. Use

Subtle surface Use #B7F1CE for cards and hover fills. Tint 80

Avoid beside #02503B — 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 #024E21 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: #024E21;
  --color-base-rgb: 2 78 33;
  --color-base-oklch: oklch(37.1% 0.100 150.2);
  --color-50: #F0FEF6;
  --color-100: #D8FDE7;
  --color-200: #B1FCCF;
  --color-300: #7AF5AB;
  --color-400: #4AE889;
  --color-500: #27CE6A;
  --color-600: #269C55;
  --color-700: #216E40;
  --color-800: #1A472C;
  --color-900: #122B1C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F0FEF6',
    100: '#D8FDE7',
    200: '#B1FCCF',
    300: '#7AF5AB',
    400: '#4AE889',
    500: '#27CE6A',
    600: '#269C55',
    700: '#216E40',
    800: '#1A472C',
    900: '#122B1C',
  },
}

$base: #024E21;
$base-ink: #FFFFFF;
$base-50: #F0FEF6;
$base-100: #D8FDE7;
$base-200: #B1FCCF;
$base-300: #7AF5AB;
$base-400: #4AE889;
$base-500: #27CE6A;
$base-600: #269C55;
$base-700: #216E40;
$base-800: #1A472C;
$base-900: #122B1C;
$base-hover: #02401A;
$base-subtle: #90EDB5;

{
    "color": {
        "base": {
            "value": "#024E21",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEF6",
                "type": "color"
            },
            "100": {
                "value": "#D8FDE7",
                "type": "color"
            },
            "200": {
                "value": "#B1FCCF",
                "type": "color"
            },
            "300": {
                "value": "#7AF5AB",
                "type": "color"
            },
            "400": {
                "value": "#4AE889",
                "type": "color"
            },
            "500": {
                "value": "#27CE6A",
                "type": "color"
            },
            "600": {
                "value": "#269C55",
                "type": "color"
            },
            "700": {
                "value": "#216E40",
                "type": "color"
            },
            "800": {
                "value": "#1A472C",
                "type": "color"
            },
            "900": {
                "value": "#122B1C",
                "type": "color"
            }
        }
    }
}

Palettes built on #024E21

Color Lab

Pairs with #024E21

UI roles & guardrails

In real applications

Scales

Every model

Export