What color is #18BDCC?

#18BDCC is a medium, vivid cyan. In RGB it is rgb(24, 189, 204), and in HSL hsl(185, 79%, 45%).

Is #18BDCC accessible as text?

On white, #18BDCC has a contrast ratio of 2.29:1 (fails WCAG AA for body text); on black it is 9.19:1 (passes). For text placed on #18BDCC, use black for the best readability.

What is the closest Tailwind color to #18BDCC?

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

What colors go well with #18BDCC?

#18BDCC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CD2718. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #18BDCC below.

Is #18BDCC good for buttons?

#18BDCC works well for buttons and highlights, but use black text on #18BDCC — white text only reaches 2.29:1, below the 4.5:1 needed for normal-size labels.

Is #18BDCC the same as CSS darkturquoise?

No — #18BDCC is not the CSS named color darkturquoise, but darkturquoise (#00CED1) is the closest CSS named color.

#18BDCC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #18BDCC

Not just a swatch — here's how #18BDCC works with other colors. Named schemes with #18BDCC in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #18BDCC Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

Tiffany 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 #18BDCC Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

Tiffany 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 #18BDCC Surface #14161A Highlight #F4F6F8 Secondary #596671 Accent #6AE2F0

Tiffany 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 Tiffany Blue.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #18BDCC Secondary #B5DDE2 Support #979286 Ink #16140F

Tiffany 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 Tiffany Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #18BDCC Anchor #372C1D Surface #EBE5D0 Accent #7F9D73 Secondary #3A3933

Tiffany 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 #18BDCC 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 57/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 27/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 8/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 37/100

Low

A faint retro warmth without tipping into sepia.

Luxury 35/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 47/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 49/100

Moderate

Workable accent with care around contrast.

Surface fit 37/100

Low

Usable as a tinted surface in measured doses.

Print safety 68/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #18BDCC

For UI

For branding

For interior

For fashion

People also use #18BDCC with

Medium Spring Green Cerulean Fire Engine Red 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 8.1:1. Use

Subtle surface Use #D3F0F3 for cards and hover fills. Tint 80

Avoid beside #1882CD — 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 #18BDCC at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

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: #18BDCC;
  --color-base-rgb: 24 189 204;
  --color-base-oklch: oklch(73.0% 0.122 205.2);
  --color-50: #F1FDFE;
  --color-100: #DAF9FC;
  --color-200: #B6F1F6;
  --color-300: #85E2EB;
  --color-400: #58CFDA;
  --color-500: #35B4C0;
  --color-600: #308A92;
  --color-700: #286267;
  --color-800: #1D4043;
  --color-900: #142829;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  tiffany-blue: {
    50: '#F1FDFE',
    100: '#DAF9FC',
    200: '#B6F1F6',
    300: '#85E2EB',
    400: '#58CFDA',
    500: '#35B4C0',
    600: '#308A92',
    700: '#286267',
    800: '#1D4043',
    900: '#142829',
  },
}

$base: #18BDCC;
$base-ink: #141310;
$base-50: #F1FDFE;
$base-100: #DAF9FC;
$base-200: #B6F1F6;
$base-300: #85E2EB;
$base-400: #58CFDA;
$base-500: #35B4C0;
$base-600: #308A92;
$base-700: #286267;
$base-800: #1D4043;
$base-900: #142829;
$base-hover: #1398A4;
$base-subtle: #BCEAEE;

{
    "color": {
        "base": {
            "value": "#18BDCC",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FDFE",
                "type": "color"
            },
            "100": {
                "value": "#DAF9FC",
                "type": "color"
            },
            "200": {
                "value": "#B6F1F6",
                "type": "color"
            },
            "300": {
                "value": "#85E2EB",
                "type": "color"
            },
            "400": {
                "value": "#58CFDA",
                "type": "color"
            },
            "500": {
                "value": "#35B4C0",
                "type": "color"
            },
            "600": {
                "value": "#308A92",
                "type": "color"
            },
            "700": {
                "value": "#286267",
                "type": "color"
            },
            "800": {
                "value": "#1D4043",
                "type": "color"
            },
            "900": {
                "value": "#142829",
                "type": "color"
            }
        }
    }
}

Palettes built on #18BDCC

Color Lab

Pairs with #18BDCC

UI roles & guardrails

In real applications

Scales

Every model

Export