What color is #4EC9DC?

#4EC9DC is a medium cyan. In RGB it is rgb(78, 201, 220), and in HSL hsl(188, 67%, 58%).

Is #4EC9DC accessible as text?

On white, #4EC9DC has a contrast ratio of 1.96:1 (fails WCAG AA for body text); on black it is 10.71:1 (passes). For text placed on #4EC9DC, use black for the best readability.

What is the closest Tailwind color to #4EC9DC?

The nearest Tailwind CSS token is cyan-400 (#00D3F2).

What colors go well with #4EC9DC?

#4EC9DC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #DC5F4C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #4EC9DC below.

Is #4EC9DC good for buttons?

#4EC9DC works well for buttons and highlights, but use black text on #4EC9DC — white text only reaches 1.96:1, below the 4.5:1 needed for normal-size labels.

Is #4EC9DC the same as CSS darkturquoise?

No — #4EC9DC is not the CSS named color darkturquoise, but darkturquoise (#00CED1) is the closest CSS named color.

#4EC9DC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #4EC9DC

Not just a swatch — here's how #4EC9DC works with other colors. Named schemes with #4EC9DC in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #4EC9DC Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

Lagoon Blue 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 #4EC9DC Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

Lagoon Blue 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 #4EC9DC Surface #14161A Highlight #F4F6F8 Secondary #596671 Accent #87EFFF

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #4EC9DC Secondary #C6EBF1 Support #979286 Ink #16140F

Lagoon Blue 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 Lagoon Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #4EC9DC Anchor #372C1D Surface #EBE5D0 Accent #7F9D73 Secondary #3A3933

Lagoon Blue anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Build a working theme in the generator →

Color Lab

How #4EC9DC 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 19/100

Cool

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

Softness 62/100

High

Middle-weight — neither delicate nor heavy.

Depth 23/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 5/100

Very low

Reads engineered rather than organic — synthetic, digital.

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 43/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 34/100

Low

Workable accent with care around contrast.

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 70/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #4EC9DC

For UI

For branding

For interior

For fashion

People also use #4EC9DC with

Seafoam Green Royal Blue Cinnabar 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 9.5:1. Use

Subtle surface Use #DFF1F4 for cards and hover fills. Tint 80

Avoid beside #4C99DC — 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 #4EC9DC 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: #4EC9DC;
  --color-base-rgb: 78 201 220;
  --color-base-oklch: oklch(77.5% 0.110 209.4);
  --color-50: #F2FBFD;
  --color-100: #DCF5F9;
  --color-200: #BBEAF1;
  --color-300: #8CD7E3;
  --color-400: #62C2D0;
  --color-500: #3FA6B5;
  --color-600: #377F8B;
  --color-700: #2C5B62;
  --color-800: #203C41;
  --color-900: #162528;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  lagoon-blue: {
    50: '#F2FBFD',
    100: '#DCF5F9',
    200: '#BBEAF1',
    300: '#8CD7E3',
    400: '#62C2D0',
    500: '#3FA6B5',
    600: '#377F8B',
    700: '#2C5B62',
    800: '#203C41',
    900: '#162528',
  },
}

$base: #4EC9DC;
$base-ink: #141310;
$base-50: #F2FBFD;
$base-100: #DCF5F9;
$base-200: #BBEAF1;
$base-300: #8CD7E3;
$base-400: #62C2D0;
$base-500: #3FA6B5;
$base-600: #377F8B;
$base-700: #2C5B62;
$base-800: #203C41;
$base-900: #162528;
$base-hover: #27B0C6;
$base-subtle: #CFEBEF;

{
    "color": {
        "base": {
            "value": "#4EC9DC",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FBFD",
                "type": "color"
            },
            "100": {
                "value": "#DCF5F9",
                "type": "color"
            },
            "200": {
                "value": "#BBEAF1",
                "type": "color"
            },
            "300": {
                "value": "#8CD7E3",
                "type": "color"
            },
            "400": {
                "value": "#62C2D0",
                "type": "color"
            },
            "500": {
                "value": "#3FA6B5",
                "type": "color"
            },
            "600": {
                "value": "#377F8B",
                "type": "color"
            },
            "700": {
                "value": "#2C5B62",
                "type": "color"
            },
            "800": {
                "value": "#203C41",
                "type": "color"
            },
            "900": {
                "value": "#162528",
                "type": "color"
            }
        }
    }
}