What color is #178240?

#178240 is a dark, vivid green. In RGB it is rgb(23, 130, 64), and in HSL hsl(143, 70%, 30%).

Is #178240 accessible as text?

On white, #178240 has a contrast ratio of 4.88:1 (passes WCAG AA for body text); on black it is 4.30:1 (fails). For text placed on #178240, use white for the best readability.

What is the closest Tailwind color to #178240?

The nearest Tailwind CSS token is green-700 (#008236).

What colors go well with #178240?

#178240 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #821759. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #178240 below.

Is #178240 good for buttons?

#178240 works well for buttons and highlights, but use white text on #178240 — black text only reaches 4.30:1, below the 4.5:1 needed for normal-size labels.

Is #178240 the same as CSS seagreen?

No — #178240 is not the CSS named color seagreen, but seagreen (#2E8B57) is the closest CSS named color.

#178240 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #178240

Not just a swatch — here's how #178240 works with other colors. Named schemes with #178240 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #178240 Secondary #4B6C3C Accent #AD6C00 Surface #EEEAD6 Anchor #3C2F20

Sea 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 #178240 Accent #A8C4BA Surface #E1D9BE Secondary #9AA0A0 Anchor #1A3648

Sea 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 #178240 Secondary #754E1B Surface #E5DBC0 Accent #3C5140 Anchor #5B2321

Sea 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 #178240 Surface #F0E8D6 Anchor #612029 Accent #E5C3BA Secondary #342B2C

Sea 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 #178240 Secondary #829F87 Support #989286 Ink #17140F

Sea 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 Sea Green carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #178240 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 43/100

Neutral

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

Softness 41/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 48/100

Moderate

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

Naturalness 94/100

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 53/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 37/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 100/100

Very high

Strong interactive accent — visible and can carry a legible label.

Surface fit 14/100

Very low

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

Print safety 70/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #178240

For UI

For branding

For interior

For fashion

People also use #178240 with

Kelly Green Teal Green Byzantium Platinum Hunter Green

UI roles & guardrails

Primary action Safe as a filled button with white label. AA

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 4.9:1. Use

Subtle surface Use #C9EDD7 for cards and hover fills. Tint 80

Avoid beside #178264 — 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 #178240 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: #178240;
  --color-base-rgb: 23 130 64;
  --color-base-oklch: oklch(53.4% 0.136 150.5);
  --color-50: #F1FDF6;
  --color-100: #DBFAE7;
  --color-200: #BAF3D0;
  --color-300: #8AE5AD;
  --color-400: #5FD38B;
  --color-500: #3DB86C;
  --color-600: #358C57;
  --color-700: #2B6441;
  --color-800: #20412D;
  --color-900: #15281C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  sea-green: {
    50: '#F1FDF6',
    100: '#DBFAE7',
    200: '#BAF3D0',
    300: '#8AE5AD',
    400: '#5FD38B',
    500: '#3DB86C',
    600: '#358C57',
    700: '#2B6441',
    800: '#20412D',
    900: '#15281C',
  },
}

$base: #178240;
$base-ink: #FFFFFF;
$base-50: #F1FDF6;
$base-100: #DBFAE7;
$base-200: #BAF3D0;
$base-300: #8AE5AD;
$base-400: #5FD38B;
$base-500: #3DB86C;
$base-600: #358C57;
$base-700: #2B6441;
$base-800: #20412D;
$base-900: #15281C;
$base-hover: #126833;
$base-subtle: #ADE6C3;

{
    "color": {
        "base": {
            "value": "#178240",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FDF6",
                "type": "color"
            },
            "100": {
                "value": "#DBFAE7",
                "type": "color"
            },
            "200": {
                "value": "#BAF3D0",
                "type": "color"
            },
            "300": {
                "value": "#8AE5AD",
                "type": "color"
            },
            "400": {
                "value": "#5FD38B",
                "type": "color"
            },
            "500": {
                "value": "#3DB86C",
                "type": "color"
            },
            "600": {
                "value": "#358C57",
                "type": "color"
            },
            "700": {
                "value": "#2B6441",
                "type": "color"
            },
            "800": {
                "value": "#20412D",
                "type": "color"
            },
            "900": {
                "value": "#15281C",
                "type": "color"
            }
        }
    }
}

Palettes built on #178240

Color Lab

Pairs with #178240

UI roles & guardrails

In real applications

Scales

Every model

Export