What color is #66CC80?

#66CC80 is a medium green. In RGB it is rgb(102, 204, 128), and in HSL hsl(135, 50%, 60%).

Is #66CC80 accessible as text?

On white, #66CC80 has a contrast ratio of 2.00:1 (fails WCAG AA for body text); on black it is 10.51:1 (passes). For text placed on #66CC80, use black for the best readability.

What is the closest Tailwind color to #66CC80?

The nearest Tailwind CSS token is emerald-400 (#00D492).

What colors go well with #66CC80?

#66CC80 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CC66B3. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #66CC80 below.

Is #66CC80 good for buttons?

#66CC80 works well for buttons and highlights, but use black text on #66CC80 — white text only reaches 2.00:1, below the 4.5:1 needed for normal-size labels.

Is #66CC80 the same as CSS mediumaquamarine?

No — #66CC80 is not the CSS named color mediumaquamarine, but mediumaquamarine (#66CDAA) is the closest CSS named color.

#66CC80 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #66CC80

Not just a swatch — here's how #66CC80 works with other colors. Named schemes with #66CC80 in its natural role, and a note on why the supporting colors balance it.

Botanical Studio Lead · 5 colors

Lead #66CC80 Secondary #4B6C3C Accent #AD6C00 Surface #EEEAD6 Anchor #3C2F20

Emerald 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 #66CC80 Accent #A8C4BA Surface #E1D9BE Secondary #9AA09F Anchor #1A3648

Emerald 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 #66CC80 Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

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

Warm Autumn Interior Dominant · 5 colors

Dominant #66CC80 Secondary #AD6C00 Accent #677C4D Surface #F2EDDD Anchor #392B1E

This palette keeps Emerald Green as the dominant warm neutral, balanced by muted terracotta and olive earth tones and grounded by a deep espresso anchor.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #66CC80 Secondary #C9EACE Support #989286 Ink #17140F

Emerald 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 Emerald Green carrying the quiet middle.

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Color Lab

How #66CC80 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 55/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 24/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 88/100

Very high

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

Vintage feel 36/100

Low

A faint retro warmth without tipping into sepia.

Luxury 30/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 56/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 39/100

Low

Workable accent with care around contrast.

Surface fit 34/100

Low

Usable as a tinted surface in measured doses.

Print safety 69/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #66CC80

For UI

For branding

For interior

For fashion

People also use #66CC80 with

Pistachio Medium Aquamarine Orchid 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 9.3:1. Use

Subtle surface Use #E3F2E7 for cards and hover fills. Tint 80

Avoid beside #66CCA2 — 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 #66CC80 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: #66CC80;
  --color-base-rgb: 102 204 128;
  --color-base-oklch: oklch(76.5% 0.145 150.1);
  --color-50: #F3FCF5;
  --color-100: #E0F5E5;
  --color-200: #C2EBCC;
  --color-300: #97D8A7;
  --color-400: #70C284;
  --color-500: #4EA664;
  --color-600: #428051;
  --color-700: #335C3D;
  --color-800: #243C2A;
  --color-900: #18251B;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  emerald-green: {
    50: '#F3FCF5',
    100: '#E0F5E5',
    200: '#C2EBCC',
    300: '#97D8A7',
    400: '#70C284',
    500: '#4EA664',
    600: '#428051',
    700: '#335C3D',
    800: '#243C2A',
    900: '#18251B',
  },
}

$base: #66CC80;
$base-ink: #141310;
$base-50: #F3FCF5;
$base-100: #E0F5E5;
$base-200: #C2EBCC;
$base-300: #97D8A7;
$base-400: #70C284;
$base-500: #4EA664;
$base-600: #428051;
$base-700: #335C3D;
$base-800: #243C2A;
$base-900: #18251B;
$base-hover: #3DB85C;
$base-subtle: #D5ECDB;

{
    "color": {
        "base": {
            "value": "#66CC80",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FCF5",
                "type": "color"
            },
            "100": {
                "value": "#E0F5E5",
                "type": "color"
            },
            "200": {
                "value": "#C2EBCC",
                "type": "color"
            },
            "300": {
                "value": "#97D8A7",
                "type": "color"
            },
            "400": {
                "value": "#70C284",
                "type": "color"
            },
            "500": {
                "value": "#4EA664",
                "type": "color"
            },
            "600": {
                "value": "#428051",
                "type": "color"
            },
            "700": {
                "value": "#335C3D",
                "type": "color"
            },
            "800": {
                "value": "#243C2A",
                "type": "color"
            },
            "900": {
                "value": "#18251B",
                "type": "color"
            }
        }
    }
}