What color is #0A4E28?

#0A4E28 is a very dark, vivid teal-green. In RGB it is rgb(10, 78, 40), and in HSL hsl(146, 77%, 17%).

Is #0A4E28 accessible as text?

On white, #0A4E28 has a contrast ratio of 9.84:1 (passes WCAG AA for body text); on black it is 2.13:1 (fails). For text placed on #0A4E28, use white for the best readability.

What is the closest Tailwind color to #0A4E28?

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

What colors go well with #0A4E28?

#0A4E28 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4D0A30. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0A4E28 below.

Is #0A4E28 good for buttons?

#0A4E28 works well for buttons and highlights, but use white text on #0A4E28 — black text only reaches 2.13:1, below the 4.5:1 needed for normal-size labels.

Is #0A4E28 the same as CSS darkslategray?

No — #0A4E28 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.

#0A4E28 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0A4E28

Not just a swatch — here's how #0A4E28 works with other colors. Named schemes with #0A4E28 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #0A4E28 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.

Coastal Morning Lead · 5 colors

Lead #0A4E28 Accent #A8C4BA Surface #E1D9BE Secondary #9AA0A0 Anchor #1A3648

Castleton Green opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Nordic Calm Accent · 5 colors

Accent #0A4E28 Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

Castleton Green keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Luxury Packaging Feature · 5 colors

Feature #0A4E28 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 #0A4E28 Secondary #5A6D5F 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 #0A4E28 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 44/100

Neutral

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 62/100

High

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

Naturalness 93/100

Very high

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

Vintage feel 55/100

Moderate

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 67/100

High

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

Brand distinctiveness 35/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 59/100

Moderate

Workable accent with care around contrast.

Surface fit 33/100

Low

Usable as a tinted surface in measured doses.

Print safety 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0A4E28

For UI

For branding

For interior

For fashion

People also use #0A4E28 with

Dark Green Brunswick Green Oxblood 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 9.8:1. Use

Subtle surface Use #BDECD2 for cards and hover fills. Tint 80

Avoid beside #0A4D3D — 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 #0A4E28 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: #0A4E28;
  --color-base-rgb: 10 78 40;
  --color-base-oklch: oklch(37.4% 0.091 152.7);
  --color-50: #F1FEF6;
  --color-100: #DAFBE8;
  --color-200: #B7F5D2;
  --color-300: #86E9B1;
  --color-400: #59D991;
  --color-500: #37BE71;
  --color-600: #31915B;
  --color-700: #286643;
  --color-800: #1E432E;
  --color-900: #14291D;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F1FEF6',
    100: '#DAFBE8',
    200: '#B7F5D2',
    300: '#86E9B1',
    400: '#59D991',
    500: '#37BE71',
    600: '#31915B',
    700: '#286643',
    800: '#1E432E',
    900: '#14291D',
  },
}

$base: #0A4E28;
$base-ink: #FFFFFF;
$base-50: #F1FEF6;
$base-100: #DAFBE8;
$base-200: #B7F5D2;
$base-300: #86E9B1;
$base-400: #59D991;
$base-500: #37BE71;
$base-600: #31915B;
$base-700: #286643;
$base-800: #1E432E;
$base-900: #14291D;
$base-hover: #083D1F;
$base-subtle: #9AE5BB;

{
    "color": {
        "base": {
            "value": "#0A4E28",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FEF6",
                "type": "color"
            },
            "100": {
                "value": "#DAFBE8",
                "type": "color"
            },
            "200": {
                "value": "#B7F5D2",
                "type": "color"
            },
            "300": {
                "value": "#86E9B1",
                "type": "color"
            },
            "400": {
                "value": "#59D991",
                "type": "color"
            },
            "500": {
                "value": "#37BE71",
                "type": "color"
            },
            "600": {
                "value": "#31915B",
                "type": "color"
            },
            "700": {
                "value": "#286643",
                "type": "color"
            },
            "800": {
                "value": "#1E432E",
                "type": "color"
            },
            "900": {
                "value": "#14291D",
                "type": "color"
            }
        }
    }
}