What color is #66C19E?

#66C19E is a medium teal-green. In RGB it is rgb(102, 193, 158), and in HSL hsl(157, 42%, 58%).

Is #66C19E accessible as text?

On white, #66C19E has a contrast ratio of 2.17:1 (fails WCAG AA for body text); on black it is 9.69:1 (passes). For text placed on #66C19E, use black for the best readability.

What is the closest Tailwind color to #66C19E?

The nearest Tailwind CSS token is teal-500 (#00BBA7).

What colors go well with #66C19E?

#66C19E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C16789. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #66C19E below.

Is #66C19E good for buttons?

#66C19E works well for buttons and highlights, but use black text on #66C19E — white text only reaches 2.17:1, below the 4.5:1 needed for normal-size labels.

Is #66C19E the same as CSS mediumaquamarine?

No — #66C19E is not the CSS named color mediumaquamarine, but mediumaquamarine (#66CDAA) is the closest CSS named color.

#66C19E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #66C19E

Not just a swatch — here's how #66C19E works with other colors. Named schemes with #66C19E in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #66C19E Accent #A7C4BB Surface #E1D9BE Secondary #9AA0A0 Anchor #1B3548

Medium Aquamarine 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 #66C19E Secondary #ADB4B7 Surface #F1F2F0 Support #7895A3 Anchor #2D3236

Medium Aquamarine 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 #66C19E Secondary #AB6D00 Accent #657D4E Surface #F1EDDD Anchor #392B1E

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

Botanical Studio Lead · 5 colors

Lead #66C19E Secondary #496C3E Accent #AB6D00 Surface #EEEAD6 Anchor #3C2F20

Medium Aquamarine 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 #66C19E Secondary #C4E1D4 Support #989286 Ink #17140F

Medium Aquamarine 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 Medium Aquamarine carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #66C19E 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 36/100

Cool

Reads cool and recessive — calming, technical, good for trust-led UI.

Softness 61/100

High

Middle-weight — neither delicate nor heavy.

Depth 25/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 67/100

High

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

Vintage feel 47/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 33/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 39/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 42/100

Moderate

Workable accent with care around contrast.

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 80/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #66C19E

For UI

For branding

For interior

For fashion

People also use #66C19E with

Pistachio Iceberg Rose Gold Platinum Dark Slate Gray

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 8.6:1. Use

Subtle surface Use #E3F0EB for cards and hover fills. Tint 80

Avoid beside #67C1BC — 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 #66C19E 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: #66C19E;
  --color-base-rgb: 102 193 158;
  --color-base-oklch: oklch(74.5% 0.102 166.5);
  --color-50: #F4FBF8;
  --color-100: #E2F4ED;
  --color-200: #C5E7DA;
  --color-300: #9CD3BE;
  --color-400: #76BCA1;
  --color-500: #559F83;
  --color-600: #477B67;
  --color-700: #36584B;
  --color-800: #263B33;
  --color-900: #192420;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  medium-aquamarine: {
    50: '#F4FBF8',
    100: '#E2F4ED',
    200: '#C5E7DA',
    300: '#9CD3BE',
    400: '#76BCA1',
    500: '#559F83',
    600: '#477B67',
    700: '#36584B',
    800: '#263B33',
    900: '#192420',
  },
}

$base: #66C19E;
$base-ink: #141310;
$base-50: #F4FBF8;
$base-100: #E2F4ED;
$base-200: #C5E7DA;
$base-300: #9CD3BE;
$base-400: #76BCA1;
$base-500: #559F83;
$base-600: #477B67;
$base-700: #36584B;
$base-800: #263B33;
$base-900: #192420;
$base-hover: #45A882;
$base-subtle: #D5E9E1;

{
    "color": {
        "base": {
            "value": "#66C19E",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FBF8",
                "type": "color"
            },
            "100": {
                "value": "#E2F4ED",
                "type": "color"
            },
            "200": {
                "value": "#C5E7DA",
                "type": "color"
            },
            "300": {
                "value": "#9CD3BE",
                "type": "color"
            },
            "400": {
                "value": "#76BCA1",
                "type": "color"
            },
            "500": {
                "value": "#559F83",
                "type": "color"
            },
            "600": {
                "value": "#477B67",
                "type": "color"
            },
            "700": {
                "value": "#36584B",
                "type": "color"
            },
            "800": {
                "value": "#263B33",
                "type": "color"
            },
            "900": {
                "value": "#192420",
                "type": "color"
            }
        }
    }
}

Palettes built on #66C19E

Color Lab

Pairs with #66C19E

UI roles & guardrails

In real applications

Scales

Every model

Export