What color is #0B520A?

#0B520A is a dark, vivid green. In RGB it is rgb(11, 82, 10), and in HSL hsl(119, 78%, 18%).

Is #0B520A accessible as text?

On white, #0B520A has a contrast ratio of 9.44:1 (passes WCAG AA for body text); on black it is 2.23:1 (fails). For text placed on #0B520A, use white for the best readability.

What is the closest Tailwind color to #0B520A?

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

What colors go well with #0B520A?

#0B520A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #510A52. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0B520A below.

Is #0B520A good for buttons?

#0B520A works well for buttons and highlights, but use white text on #0B520A — black text only reaches 2.23:1, below the 4.5:1 needed for normal-size labels.

Is #0B520A the same as CSS darkgreen?

No — #0B520A is not the CSS named color darkgreen, but darkgreen (#006400) is the closest CSS named color.

#0B520A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0B520A

Not just a swatch — here's how #0B520A works with other colors. Named schemes with #0B520A in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #0B520A Secondary #4D6B3B Accent #AD6B00 Surface #EEEAD6 Anchor #3C2F21

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

Vintage Leather Lead · 5 colors

Lead #0B520A Secondary #754E1C 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.

Modern Café Dominant · 5 colors

Dominant #0B520A Anchor #392B1E Surface #EDE4D0 Accent #879B6D 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.

Berry & Cream Lead · 5 colors

Lead #0B520A Surface #F0E8D6 Anchor #61202A Accent #E5C3BA 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 #0B520A Secondary #5C705A 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.

Build a working theme in the generator →

Color Lab

How #0B520A 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 48/100

Neutral

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

Softness 32/100

Low

Firm and assertive — carries weight and contrast.

Depth 62/100

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 49/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 67/100

High

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

Brand distinctiveness 33/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 68/100

High

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

Surface fit 23/100

Low

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

Print safety 73/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0B520A

For UI

For branding

For interior

For fashion

People also use #0B520A with

Avocado Castleton Green Russian Violet 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 9.4:1. Use

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

Avoid beside #0A5221 — 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 #0B520A 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: #0B520A;
  --color-base-rgb: 11 82 10;
  --color-base-oklch: oklch(38.3% 0.121 142.6);
  --color-50: #F1FEF1;
  --color-100: #DAFBDA;
  --color-200: #B8F6B6;
  --color-300: #87EA85;
  --color-400: #5BDA58;
  --color-500: #38BF36;
  --color-600: #329130;
  --color-700: #296728;
  --color-800: #1E431E;
  --color-900: #142914;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F1FEF1',
    100: '#DAFBDA',
    200: '#B8F6B6',
    300: '#87EA85',
    400: '#5BDA58',
    500: '#38BF36',
    600: '#329130',
    700: '#296728',
    800: '#1E431E',
    900: '#142914',
  },
}

$base: #0B520A;
$base-ink: #FFFFFF;
$base-50: #F1FEF1;
$base-100: #DAFBDA;
$base-200: #B8F6B6;
$base-300: #87EA85;
$base-400: #5BDA58;
$base-500: #38BF36;
$base-600: #329130;
$base-700: #296728;
$base-800: #1E431E;
$base-900: #142914;
$base-hover: #094108;
$base-subtle: #9CE59B;

{
    "color": {
        "base": {
            "value": "#0B520A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FEF1",
                "type": "color"
            },
            "100": {
                "value": "#DAFBDA",
                "type": "color"
            },
            "200": {
                "value": "#B8F6B6",
                "type": "color"
            },
            "300": {
                "value": "#87EA85",
                "type": "color"
            },
            "400": {
                "value": "#5BDA58",
                "type": "color"
            },
            "500": {
                "value": "#38BF36",
                "type": "color"
            },
            "600": {
                "value": "#329130",
                "type": "color"
            },
            "700": {
                "value": "#296728",
                "type": "color"
            },
            "800": {
                "value": "#1E431E",
                "type": "color"
            },
            "900": {
                "value": "#142914",
                "type": "color"
            }
        }
    }
}

Palettes built on #0B520A

Color Lab

Pairs with #0B520A

UI roles & guardrails

In real applications

Scales

Every model

Export