What color is #0A4E1C?

#0A4E1C is a very dark, vivid green. In RGB it is rgb(10, 78, 28), and in HSL hsl(136, 77%, 17%).

Is #0A4E1C accessible as text?

On white, #0A4E1C has a contrast ratio of 9.91:1 (passes WCAG AA for body text); on black it is 2.12:1 (fails). For text placed on #0A4E1C, use white for the best readability.

What is the closest Tailwind color to #0A4E1C?

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

What colors go well with #0A4E1C?

#0A4E1C pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4D0A3B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0A4E1C below.

Is #0A4E1C good for buttons?

#0A4E1C works well for buttons and highlights, but use white text on #0A4E1C — black text only reaches 2.12:1, below the 4.5:1 needed for normal-size labels.

Is #0A4E1C the same as CSS darkgreen?

No — #0A4E1C is not the CSS named color darkgreen, but darkgreen (#006400) is the closest CSS named color.

#0A4E1C Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0A4E1C

Not just a swatch — here's how #0A4E1C works with other colors. Named schemes with #0A4E1C in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #0A4E1C Secondary #4C6B3C 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 #0A4E1C Anchor #141210 Accent #C0A64B Secondary #222C23 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 #0A4E1C Anchor #292A2E Secondary #6C6F74 Surface #EBE6DA Accent #002C19

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 #0A4E1C Secondary #754E1B Surface #E6DBC0 Accent #3C5140 Anchor #5B2322

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 #0A4E1C Secondary #596D5B 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 #0A4E1C 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 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 40/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 61/100

High

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

Surface fit 29/100

Low

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

Print safety 77/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0A4E1C

For UI

For branding

For interior

For fashion

People also use #0A4E1C 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 #BDECCA for cards and hover fills. Tint 80

Avoid beside #0A4D32 — 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 #0A4E1C at work across the surfaces designers actually ship.

Website / UI

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Build faster.

A working theme, generated in seconds.

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: #0A4E1C;
  --color-base-rgb: 10 78 28;
  --color-base-oklch: oklch(37.2% 0.103 147.2);
  --color-50: #F1FEF4;
  --color-100: #DAFBE3;
  --color-200: #B7F5C8;
  --color-300: #86E9A0;
  --color-400: #59D97B;
  --color-500: #37BE5B;
  --color-600: #31914B;
  --color-700: #286639;
  --color-800: #1E4328;
  --color-900: #14291A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F1FEF4',
    100: '#DAFBE3',
    200: '#B7F5C8',
    300: '#86E9A0',
    400: '#59D97B',
    500: '#37BE5B',
    600: '#31914B',
    700: '#286639',
    800: '#1E4328',
    900: '#14291A',
  },
}

$base: #0A4E1C;
$base-ink: #FFFFFF;
$base-50: #F1FEF4;
$base-100: #DAFBE3;
$base-200: #B7F5C8;
$base-300: #86E9A0;
$base-400: #59D97B;
$base-500: #37BE5B;
$base-600: #31914B;
$base-700: #286639;
$base-800: #1E4328;
$base-900: #14291A;
$base-hover: #083D16;
$base-subtle: #9AE5AE;

{
    "color": {
        "base": {
            "value": "#0A4E1C",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FEF4",
                "type": "color"
            },
            "100": {
                "value": "#DAFBE3",
                "type": "color"
            },
            "200": {
                "value": "#B7F5C8",
                "type": "color"
            },
            "300": {
                "value": "#86E9A0",
                "type": "color"
            },
            "400": {
                "value": "#59D97B",
                "type": "color"
            },
            "500": {
                "value": "#37BE5B",
                "type": "color"
            },
            "600": {
                "value": "#31914B",
                "type": "color"
            },
            "700": {
                "value": "#286639",
                "type": "color"
            },
            "800": {
                "value": "#1E4328",
                "type": "color"
            },
            "900": {
                "value": "#14291A",
                "type": "color"
            }
        }
    }
}

Palettes built on #0A4E1C

Color Lab

Pairs with #0A4E1C

UI roles & guardrails

In real applications

Scales

Every model

Export