What color is #015F3B?

#015F3B is a dark, vivid teal-green. In RGB it is rgb(1, 95, 59), and in HSL hsl(157, 98%, 19%).

Is #015F3B accessible as text?

On white, #015F3B has a contrast ratio of 7.77:1 (passes WCAG AA for body text); on black it is 2.70:1 (fails). For text placed on #015F3B, use white for the best readability.

What is the closest Tailwind color to #015F3B?

The nearest Tailwind CSS token is emerald-800 (#006045).

What colors go well with #015F3B?

#015F3B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #600125. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #015F3B below.

Is #015F3B good for buttons?

#015F3B works well for buttons and highlights, but use white text on #015F3B — black text only reaches 2.70:1, below the 4.5:1 needed for normal-size labels.

Is #015F3B the same as CSS darkgreen?

No — #015F3B is not the CSS named color darkgreen, but darkgreen (#006400) is the closest CSS named color.

#015F3B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #015F3B

Not just a swatch — here's how #015F3B works with other colors. Named schemes with #015F3B in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #015F3B Secondary #4A6C3D Accent #AC6D00 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 #015F3B Accent #A8C4BB 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.

Vintage Leather Lead · 5 colors

Lead #015F3B Secondary #744E1A Surface #E5DBC0 Accent #3C5140 Anchor #5B2320

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.

Berry & Cream Lead · 5 colors

Lead #015F3B Surface #F0E8D6 Anchor #612028 Accent #E5C4B9 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 #015F3B Secondary #667D70 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 #015F3B 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 40/100

Neutral

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

Softness 37/100

Low

Middle-weight — neither delicate nor heavy.

Depth 57/100

Moderate

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

Naturalness 84/100

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 63/100

High

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

Brand distinctiveness 26/100

Low

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

UI accent fit 78/100

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 80/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #015F3B

For UI

For branding

For interior

For fashion

People also use #015F3B with

Forest Green Dark Slate Gray Tyrian Purple Platinum

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 7.8:1. Use

Subtle surface Use #B9F3DC for cards and hover fills. Tint 80

Avoid beside #01605B — 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 #015F3B 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: #015F3B;
  --color-base-rgb: 1 95 59;
  --color-base-oklch: oklch(42.8% 0.098 159.0);
  --color-50: #F0FEF9;
  --color-100: #D8FDEF;
  --color-200: #B1FCDF;
  --color-300: #78F7C6;
  --color-400: #48EAAC;
  --color-500: #24D18F;
  --color-600: #249E6F;
  --color-700: #206F51;
  --color-800: #194836;
  --color-900: #112C22;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  castleton-green: {
    50: '#F0FEF9',
    100: '#D8FDEF',
    200: '#B1FCDF',
    300: '#78F7C6',
    400: '#48EAAC',
    500: '#24D18F',
    600: '#249E6F',
    700: '#206F51',
    800: '#194836',
    900: '#112C22',
  },
}

$base: #015F3B;
$base-ink: #FFFFFF;
$base-50: #F0FEF9;
$base-100: #D8FDEF;
$base-200: #B1FCDF;
$base-300: #78F7C6;
$base-400: #48EAAC;
$base-500: #24D18F;
$base-600: #249E6F;
$base-700: #206F51;
$base-800: #194836;
$base-900: #112C22;
$base-hover: #014D30;
$base-subtle: #93EFCC;

{
    "color": {
        "base": {
            "value": "#015F3B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FEF9",
                "type": "color"
            },
            "100": {
                "value": "#D8FDEF",
                "type": "color"
            },
            "200": {
                "value": "#B1FCDF",
                "type": "color"
            },
            "300": {
                "value": "#78F7C6",
                "type": "color"
            },
            "400": {
                "value": "#48EAAC",
                "type": "color"
            },
            "500": {
                "value": "#24D18F",
                "type": "color"
            },
            "600": {
                "value": "#249E6F",
                "type": "color"
            },
            "700": {
                "value": "#206F51",
                "type": "color"
            },
            "800": {
                "value": "#194836",
                "type": "color"
            },
            "900": {
                "value": "#112C22",
                "type": "color"
            }
        }
    }
}

Palettes built on #015F3B

Color Lab

Pairs with #015F3B

UI roles & guardrails

In real applications

Scales

Every model

Export