What color is #40BCDB?

#40BCDB is a medium cyan. In RGB it is rgb(64, 188, 219), and in HSL hsl(192, 68%, 55%).

Is #40BCDB accessible as text?

On white, #40BCDB has a contrast ratio of 2.23:1 (fails WCAG AA for body text); on black it is 9.43:1 (passes). For text placed on #40BCDB, use black for the best readability.

What is the closest Tailwind color to #40BCDB?

The nearest Tailwind CSS token is cyan-500 (#00B8DB).

What colors go well with #40BCDB?

#40BCDB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #DA5D3E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #40BCDB below.

Is #40BCDB good for buttons?

#40BCDB works well for buttons and highlights, but use black text on #40BCDB — white text only reaches 2.23:1, below the 4.5:1 needed for normal-size labels.

Is #40BCDB the same as CSS deepskyblue?

No — #40BCDB is not the CSS named color deepskyblue, but deepskyblue (#00BFFF) is the closest CSS named color.

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

Palettes built on #40BCDB

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

Coastal Morning Lead · 5 colors

Lead #40BCDB Accent #A6C4BF Surface #DFDABF Secondary #9AA0A0 Anchor #1E3549

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 #40BCDB Secondary #AEB4B8 Surface #F1F2F0 Support #7B94A5 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 #40BCDB Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #7BE2FE

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 #40BCDB Secondary #BBDFE9 Support #969386 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 #40BCDB Anchor #372C1D Surface #EBE5D0 Accent #7E9D74 Secondary #393933

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 #40BCDB 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 17/100

Cool

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

Softness 59/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 26/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 3/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 37/100

Low

A faint retro warmth without tipping into sepia.

Luxury 34/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 44/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 45/100

Moderate

Workable accent with care around contrast.

Surface fit 40/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 69/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #40BCDB

For UI

For branding

For interior

For fashion

People also use #40BCDB with

Turquoise 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 8.3:1. Use

Subtle surface Use #DDEFF3 for cards and hover fills. Tint 80

Avoid beside #3E87DA — 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 #40BCDB at work across the surfaces designers actually ship.

Website / UI

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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: #40BCDB;
  --color-base-rgb: 64 188 219;
  --color-base-oklch: oklch(74.0% 0.115 218.1);
  --color-50: #F2FBFD;
  --color-100: #DCF3F9;
  --color-200: #BBE7F2;
  --color-300: #8CD2E3;
  --color-400: #61BBD1;
  --color-500: #3F9EB6;
  --color-600: #377A8B;
  --color-700: #2C5863;
  --color-800: #203A41;
  --color-900: #152428;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  lagoon-blue: {
    50: '#F2FBFD',
    100: '#DCF3F9',
    200: '#BBE7F2',
    300: '#8CD2E3',
    400: '#61BBD1',
    500: '#3F9EB6',
    600: '#377A8B',
    700: '#2C5863',
    800: '#203A41',
    900: '#152428',
  },
}

$base: #40BCDB;
$base-ink: #141310;
$base-50: #F2FBFD;
$base-100: #DCF3F9;
$base-200: #BBE7F2;
$base-300: #8CD2E3;
$base-400: #61BBD1;
$base-500: #3F9EB6;
$base-600: #377A8B;
$base-700: #2C5863;
$base-800: #203A41;
$base-900: #152428;
$base-hover: #249EBC;
$base-subtle: #CBE7EE;

{
    "color": {
        "base": {
            "value": "#40BCDB",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2FBFD",
                "type": "color"
            },
            "100": {
                "value": "#DCF3F9",
                "type": "color"
            },
            "200": {
                "value": "#BBE7F2",
                "type": "color"
            },
            "300": {
                "value": "#8CD2E3",
                "type": "color"
            },
            "400": {
                "value": "#61BBD1",
                "type": "color"
            },
            "500": {
                "value": "#3F9EB6",
                "type": "color"
            },
            "600": {
                "value": "#377A8B",
                "type": "color"
            },
            "700": {
                "value": "#2C5863",
                "type": "color"
            },
            "800": {
                "value": "#203A41",
                "type": "color"
            },
            "900": {
                "value": "#152428",
                "type": "color"
            }
        }
    }
}

Palettes built on #40BCDB

Color Lab

Pairs with #40BCDB

UI roles & guardrails

In real applications

Scales

Every model

Export