What color is #165B2B?

#165B2B is a dark green. In RGB it is rgb(22, 91, 43), and in HSL hsl(138, 61%, 22%).

Is #165B2B accessible as text?

On white, #165B2B has a contrast ratio of 8.19:1 (passes WCAG AA for body text); on black it is 2.57:1 (fails). For text placed on #165B2B, use white for the best readability.

What is the closest Tailwind color to #165B2B?

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

What colors go well with #165B2B?

#165B2B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5A1646. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #165B2B below.

Is #165B2B good for buttons?

#165B2B works well for buttons and highlights, but use white text on #165B2B — black text only reaches 2.57:1, below the 4.5:1 needed for normal-size labels.

Is #165B2B the same as CSS darkgreen?

No — #165B2B is not the CSS named color darkgreen, but darkgreen (#006400) is the closest CSS named color.

#165B2B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #165B2B

Not just a swatch — here's how #165B2B works with other colors. Named schemes with #165B2B in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #165B2B 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.

Vintage Leather Lead · 5 colors

Lead #165B2B 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.

Modern Café Dominant · 5 colors

Dominant #165B2B Anchor #382B1E 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 #165B2B Surface #F0E8D6 Anchor #612029 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 #165B2B Secondary #657A68 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 #165B2B 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 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 58/100

Moderate

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

Naturalness 100/100

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 64/100

High

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

Brand distinctiveness 28/100

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 27/100

Low

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

Print safety 78/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #165B2B

For UI

For branding

For interior

For fashion

People also use #165B2B with

Green Castleton Green Tyrian 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 8.2:1. Use

Subtle surface Use #C6E9D0 for cards and hover fills. Tint 80

Avoid beside #165A41 — 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 #165B2B at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

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: #165B2B;
  --color-base-rgb: 22 91 43;
  --color-base-oklch: oklch(41.7% 0.103 149.3);
  --color-50: #F2FCF5;
  --color-100: #DDF8E5;
  --color-200: #BDEFCC;
  --color-300: #90DFA8;
  --color-400: #67CB85;
  --color-500: #45B065;
  --color-600: #3B8752;
  --color-700: #2F603E;
  --color-800: #223F2B;
  --color-900: #16271B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F2FCF5',
    100: '#DDF8E5',
    200: '#BDEFCC',
    300: '#90DFA8',
    400: '#67CB85',
    500: '#45B065',
    600: '#3B8752',
    700: '#2F603E',
    800: '#223F2B',
    900: '#16271B',
  },
}

$base: #165B2B;
$base-ink: #FFFFFF;
$base-50: #F2FCF5;
$base-100: #DDF8E5;
$base-200: #BDEFCC;
$base-300: #90DFA8;
$base-400: #67CB85;
$base-500: #45B065;
$base-600: #3B8752;
$base-700: #2F603E;
$base-800: #223F2B;
$base-900: #16271B;
$base-hover: #124822;
$base-subtle: #A8DFB8;

{
    "color": {
        "base": {
            "value": "#165B2B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FCF5",
                "type": "color"
            },
            "100": {
                "value": "#DDF8E5",
                "type": "color"
            },
            "200": {
                "value": "#BDEFCC",
                "type": "color"
            },
            "300": {
                "value": "#90DFA8",
                "type": "color"
            },
            "400": {
                "value": "#67CB85",
                "type": "color"
            },
            "500": {
                "value": "#45B065",
                "type": "color"
            },
            "600": {
                "value": "#3B8752",
                "type": "color"
            },
            "700": {
                "value": "#2F603E",
                "type": "color"
            },
            "800": {
                "value": "#223F2B",
                "type": "color"
            },
            "900": {
                "value": "#16271B",
                "type": "color"
            }
        }
    }
}

Palettes built on #165B2B

Color Lab

Pairs with #165B2B

UI roles & guardrails

In real applications

Scales

Every model

Export