What color is #154E2B?

#154E2B is a dark green. In RGB it is rgb(21, 78, 43), and in HSL hsl(143, 58%, 19%).

Is #154E2B accessible as text?

On white, #154E2B has a contrast ratio of 9.74:1 (passes WCAG AA for body text); on black it is 2.16:1 (fails). For text placed on #154E2B, use white for the best readability.

What is the closest Tailwind color to #154E2B?

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

What colors go well with #154E2B?

#154E2B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4D1437. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #154E2B below.

Is #154E2B good for buttons?

#154E2B works well for buttons and highlights, but use white text on #154E2B — black text only reaches 2.16:1, below the 4.5:1 needed for normal-size labels.

Is #154E2B the same as CSS darkslategray?

No — #154E2B 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.

#154E2B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #154E2B

Not just a swatch — here's how #154E2B works with other colors. Named schemes with #154E2B in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #154E2B Secondary #4B6C3C 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 #154E2B 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.

Japanese Sand Base · 5 colors

Base #154E2B 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.

Luxury Packaging Feature · 5 colors

Feature #154E2B Anchor #141210 Accent #BFA74B 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.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #154E2B Secondary #5C6D60 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 #154E2B 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 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 61/100

High

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

Naturalness 89/100

Very high

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

Vintage feel 54/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 66/100

High

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

Brand distinctiveness 32/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 59/100

Moderate

Workable accent with care around contrast.

Surface fit 35/100

Low

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #154E2B

For UI

For branding

For interior

For fashion

People also use #154E2B with

Dark Green Brunswick 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 9.7:1. Use

Subtle surface Use #C4E7D2 for cards and hover fills. Tint 80

Avoid beside #144D3D — 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 #154E2B 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: #154E2B;
  --color-base-rgb: 21 78 43;
  --color-base-oklch: oklch(37.7% 0.084 152.6);
  --color-50: #F2FCF6;
  --color-100: #DEF7E8;
  --color-200: #BFEED1;
  --color-300: #92DDAF;
  --color-400: #69C98E;
  --color-500: #47AD6E;
  --color-600: #3D8558;
  --color-700: #305F42;
  --color-800: #233E2D;
  --color-900: #17261D;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F2FCF6',
    100: '#DEF7E8',
    200: '#BFEED1',
    300: '#92DDAF',
    400: '#69C98E',
    500: '#47AD6E',
    600: '#3D8558',
    700: '#305F42',
    800: '#233E2D',
    900: '#17261D',
  },
}

$base: #154E2B;
$base-ink: #FFFFFF;
$base-50: #F2FCF6;
$base-100: #DEF7E8;
$base-200: #BFEED1;
$base-300: #92DDAF;
$base-400: #69C98E;
$base-500: #47AD6E;
$base-600: #3D8558;
$base-700: #305F42;
$base-800: #233E2D;
$base-900: #17261D;
$base-hover: #103D22;
$base-subtle: #A6DCBB;

{
    "color": {
        "base": {
            "value": "#154E2B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FCF6",
                "type": "color"
            },
            "100": {
                "value": "#DEF7E8",
                "type": "color"
            },
            "200": {
                "value": "#BFEED1",
                "type": "color"
            },
            "300": {
                "value": "#92DDAF",
                "type": "color"
            },
            "400": {
                "value": "#69C98E",
                "type": "color"
            },
            "500": {
                "value": "#47AD6E",
                "type": "color"
            },
            "600": {
                "value": "#3D8558",
                "type": "color"
            },
            "700": {
                "value": "#305F42",
                "type": "color"
            },
            "800": {
                "value": "#233E2D",
                "type": "color"
            },
            "900": {
                "value": "#17261D",
                "type": "color"
            }
        }
    }
}