What color is #265237?

#265237 is a dark green. In RGB it is rgb(38, 82, 55), and in HSL hsl(143, 37%, 24%).

Is #265237 accessible as text?

On white, #265237 has a contrast ratio of 8.96:1 (passes WCAG AA for body text); on black it is 2.34:1 (fails). For text placed on #265237, use white for the best readability.

What is the closest Tailwind color to #265237?

The nearest Tailwind CSS token is emerald-900 (#004F3B).

What colors go well with #265237?

#265237 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #542742. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #265237 below.

Is #265237 good for buttons?

#265237 works well for buttons and highlights, but use white text on #265237 — black text only reaches 2.34:1, below the 4.5:1 needed for normal-size labels.

Is #265237 the same as CSS darkslategray?

No — #265237 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#265237 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #265237

Not just a swatch — here's how #265237 works with other colors. Named schemes with #265237 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #265237 Secondary #4B6C3D Accent #AC6C00 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 #265237 Secondary #744E1B 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 #265237 Anchor #382B1E Surface #EDE4D0 Accent #869B6E 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.

Japanese Sand Base · 5 colors

Base #265237 Surface #EEEADC Highlight #F5F1E7 Secondary #B6B09F Ink #2A2723

Castleton Green sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #265237 Secondary #647368 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 #265237 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 38/100

Low

Middle-weight — neither delicate nor heavy.

Depth 58/100

Moderate

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

Naturalness 72/100

High

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

Vintage feel 51/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 63/100

High

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

Brand distinctiveness 18/100

Very low

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

UI accent fit 60/100

Moderate

Workable accent with care around contrast.

Surface fit 39/100

Low

Usable as a tinted surface in measured doses.

Print safety 86/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #265237

For UI

For branding

For interior

For fashion

People also use #265237 with

Dark Olive Green Dark Slate Gray 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 9.0:1. Use

Subtle surface Use #CEE3D6 for cards and hover fills. Tint 80

Avoid beside #275447 — 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 #265237 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: #265237;
  --color-base-rgb: 38 82 55;
  --color-base-oklch: oklch(39.9% 0.067 154.9);
  --color-50: #F4FAF7;
  --color-100: #E3F3E9;
  --color-200: #C7E5D3;
  --color-300: #A0CFB2;
  --color-400: #7AB892;
  --color-500: #5A9B73;
  --color-600: #4A785C;
  --color-700: #385644;
  --color-800: #28392E;
  --color-900: #1A241D;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F4FAF7',
    100: '#E3F3E9',
    200: '#C7E5D3',
    300: '#A0CFB2',
    400: '#7AB892',
    500: '#5A9B73',
    600: '#4A785C',
    700: '#385644',
    800: '#28392E',
    900: '#1A241D',
  },
}

$base: #265237;
$base-ink: #FFFFFF;
$base-50: #F4FAF7;
$base-100: #E3F3E9;
$base-200: #C7E5D3;
$base-300: #A0CFB2;
$base-400: #7AB892;
$base-500: #5A9B73;
$base-600: #4A785C;
$base-700: #385644;
$base-800: #28392E;
$base-900: #1A241D;
$base-hover: #1F432D;
$base-subtle: #B5D5C1;

{
    "color": {
        "base": {
            "value": "#265237",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FAF7",
                "type": "color"
            },
            "100": {
                "value": "#E3F3E9",
                "type": "color"
            },
            "200": {
                "value": "#C7E5D3",
                "type": "color"
            },
            "300": {
                "value": "#A0CFB2",
                "type": "color"
            },
            "400": {
                "value": "#7AB892",
                "type": "color"
            },
            "500": {
                "value": "#5A9B73",
                "type": "color"
            },
            "600": {
                "value": "#4A785C",
                "type": "color"
            },
            "700": {
                "value": "#385644",
                "type": "color"
            },
            "800": {
                "value": "#28392E",
                "type": "color"
            },
            "900": {
                "value": "#1A241D",
                "type": "color"
            }
        }
    }
}

Palettes built on #265237

Color Lab

Pairs with #265237

UI roles & guardrails

In real applications

Scales

Every model

Export