What color is #40DDE2?

#40DDE2 is a medium, vivid cyan. In RGB it is rgb(64, 221, 226), and in HSL hsl(182, 74%, 57%).

Is #40DDE2 accessible as text?

On white, #40DDE2 has a contrast ratio of 1.66:1 (fails WCAG AA for body text); on black it is 12.66:1 (passes). For text placed on #40DDE2, use black for the best readability.

What is the closest Tailwind color to #40DDE2?

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

What colors go well with #40DDE2?

#40DDE2 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #E24640. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #40DDE2 below.

Is #40DDE2 good for buttons?

#40DDE2 works well for buttons and highlights, but use black text on #40DDE2 — white text only reaches 1.66:1, below the 4.5:1 needed for normal-size labels.

Is #40DDE2 the same as CSS turquoise?

No — #40DDE2 is not the CSS named color turquoise, but turquoise (#40E0D0) is the closest CSS named color.

#40DDE2 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #40DDE2

Not just a swatch — here's how #40DDE2 works with other colors. Named schemes with #40DDE2 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #40DDE2 Accent #A6C4BD Surface #E0DABE Secondary #9AA0A0 Anchor #1D3549

Turquoise 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 #40DDE2 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #40DDE2 Secondary #D1FCFD Support #979286 Ink #16140F

Turquoise 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 Turquoise carrying the quiet middle.

Tech Product Signal · 5 colors

Signal #40DDE2 Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #84FFFF

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

Modern Café Dominant · 5 colors

Dominant #40DDE2 Anchor #382C1D Surface #EBE4D0 Accent #809D72 Secondary #3A3933

Turquoise 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 #40DDE2 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 18/100

Cool

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

Softness 62/100

High

Soft and easy on the eye — gentle backdrops, calm surfaces.

Depth 18/100

Very low

Airy and open — recedes, leaves the composition light.

Naturalness 12/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 30/100

Low

A faint retro warmth without tipping into sepia.

Luxury 25/100

Low

Playful and accessible rather than exclusive.

Brand distinctiveness 49/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 23/100

Low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 68/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #40DDE2

For UI

For branding

For interior

For fashion

People also use #40DDE2 with

Light Green Signal Blue Vermilion 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 11.2:1. Use

Subtle surface Use #DDF4F5 for cards and hover fills. Tint 80

Avoid beside #40A7E2 — 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 #40DDE2 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: #40DDE2;
  --color-base-rgb: 64 221 226;
  --color-base-oklch: oklch(82.1% 0.126 198.2);
  --color-50: #F1FDFE;
  --color-100: #DBFAFB;
  --color-200: #B8F2F4;
  --color-300: #88E4E7;
  --color-400: #5CD2D6;
  --color-500: #39B7BC;
  --color-600: #338C8F;
  --color-700: #2A6365;
  --color-800: #1F4142;
  --color-900: #152829;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  turquoise: {
    50: '#F1FDFE',
    100: '#DBFAFB',
    200: '#B8F2F4',
    300: '#88E4E7',
    400: '#5CD2D6',
    500: '#39B7BC',
    600: '#338C8F',
    700: '#2A6365',
    800: '#1F4142',
    900: '#152829',
  },
}

$base: #40DDE2;
$base-ink: #141310;
$base-50: #F1FDFE;
$base-100: #DBFAFB;
$base-200: #B8F2F4;
$base-300: #88E4E7;
$base-400: #5CD2D6;
$base-500: #39B7BC;
$base-600: #338C8F;
$base-700: #2A6365;
$base-800: #1F4142;
$base-900: #152829;
$base-hover: #1EC5CA;
$base-subtle: #CCEFF1;

{
    "color": {
        "base": {
            "value": "#40DDE2",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FDFE",
                "type": "color"
            },
            "100": {
                "value": "#DBFAFB",
                "type": "color"
            },
            "200": {
                "value": "#B8F2F4",
                "type": "color"
            },
            "300": {
                "value": "#88E4E7",
                "type": "color"
            },
            "400": {
                "value": "#5CD2D6",
                "type": "color"
            },
            "500": {
                "value": "#39B7BC",
                "type": "color"
            },
            "600": {
                "value": "#338C8F",
                "type": "color"
            },
            "700": {
                "value": "#2A6365",
                "type": "color"
            },
            "800": {
                "value": "#1F4142",
                "type": "color"
            },
            "900": {
                "value": "#152829",
                "type": "color"
            }
        }
    }
}