What color is #18BB57?

#18BB57 is a medium, vivid green. In RGB it is rgb(24, 187, 87), and in HSL hsl(143, 77%, 41%).

Is #18BB57 accessible as text?

On white, #18BB57 has a contrast ratio of 2.53:1 (fails WCAG AA for body text); on black it is 8.28:1 (passes). For text placed on #18BB57, use black for the best readability.

What is the closest Tailwind color to #18BB57?

The nearest Tailwind CSS token is green-500 (#00C950).

What colors go well with #18BB57?

#18BB57 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #B9187B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #18BB57 below.

Is #18BB57 good for buttons?

#18BB57 works well for buttons and highlights, but use black text on #18BB57 — white text only reaches 2.53:1, below the 4.5:1 needed for normal-size labels.

Is #18BB57 the same as CSS mediumseagreen?

No — #18BB57 is not the CSS named color mediumseagreen, but mediumseagreen (#3CB371) is the closest CSS named color.

#18BB57 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #18BB57

Not just a swatch — here's how #18BB57 works with other colors. Named schemes with #18BB57 in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #18BB57 Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

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

Tech Product Signal · 5 colors

Signal #18BB57 Surface #13161A Highlight #F4F6F8 Secondary #576770 Accent #65E084

Kelly Green is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Kelly Green.

Botanical Studio Lead · 5 colors

Lead #18BB57 Secondary #4B6C3C Accent #AD6C00 Surface #EEEAD6 Anchor #3C2F20

Kelly Green leads this botanical set among foliage greens and a terracotta accent, softened by cream and grounded in bark brown.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #18BB57 Secondary #ABD5B2 Support #989286 Ink #17140F

Kelly 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 Kelly Green carrying the quiet middle.

Japanese Sand Base · 5 colors

Base #18BB57 Surface #EEEADC Highlight #F5F1E7 Secondary #B6B09F Ink #2B2723

Kelly 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.

Build a working theme in the generator →

Color Lab

How #18BB57 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 42/100

Neutral

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

Softness 45/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 32/100

Low

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

Naturalness 45/100

Moderate

Loosely natural — an earthy edge without being rustic.

Vintage feel 28/100

Low

A faint retro warmth without tipping into sepia.

Luxury 35/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 72/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 57/100

Moderate

Workable accent with care around contrast.

Surface fit 26/100

Low

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

Print safety 59/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #18BB57

For UI

For branding

For interior

For fashion

People also use #18BB57 with

Malachite Tiffany Blue Fandango Platinum Hunter Green

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AAA

Body text Do not use for body copy on light surfaces. Avoid

Large display Only on dark surfaces. Avoid

Background Pair with #141310 text at 7.3:1. Use

Subtle surface Use #D0F2DD for cards and hover fills. Tint 80

Avoid beside #18B98B — 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 #18BB57 at work across the surfaces designers actually ship.

Website / UI

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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: #18BB57;
  --color-base-rgb: 24 187 87;
  --color-base-oklch: oklch(69.4% 0.188 149.5);
  --color-50: #F1FEF6;
  --color-100: #DAFBE7;
  --color-200: #B7F5CF;
  --color-300: #86E9AC;
  --color-400: #59D98A;
  --color-500: #37BE6B;
  --color-600: #319156;
  --color-700: #286640;
  --color-800: #1E432C;
  --color-900: #14291C;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  kelly-green: {
    50: '#F1FEF6',
    100: '#DAFBE7',
    200: '#B7F5CF',
    300: '#86E9AC',
    400: '#59D98A',
    500: '#37BE6B',
    600: '#319156',
    700: '#286640',
    800: '#1E432C',
    900: '#14291C',
  },
}

$base: #18BB57;
$base-ink: #141310;
$base-50: #F1FEF6;
$base-100: #DAFBE7;
$base-200: #B7F5CF;
$base-300: #86E9AC;
$base-400: #59D98A;
$base-500: #37BE6B;
$base-600: #319156;
$base-700: #286640;
$base-800: #1E432C;
$base-900: #14291C;
$base-hover: #139445;
$base-subtle: #B7ECCC;

{
    "color": {
        "base": {
            "value": "#18BB57",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FEF6",
                "type": "color"
            },
            "100": {
                "value": "#DAFBE7",
                "type": "color"
            },
            "200": {
                "value": "#B7F5CF",
                "type": "color"
            },
            "300": {
                "value": "#86E9AC",
                "type": "color"
            },
            "400": {
                "value": "#59D98A",
                "type": "color"
            },
            "500": {
                "value": "#37BE6B",
                "type": "color"
            },
            "600": {
                "value": "#319156",
                "type": "color"
            },
            "700": {
                "value": "#286640",
                "type": "color"
            },
            "800": {
                "value": "#1E432C",
                "type": "color"
            },
            "900": {
                "value": "#14291C",
                "type": "color"
            }
        }
    }
}

Palettes built on #18BB57

Color Lab

Pairs with #18BB57

UI roles & guardrails

In real applications

Scales

Every model

Export