What color is #21CEDE?

#21CEDE is a medium, vivid cyan. In RGB it is rgb(33, 206, 222), and in HSL hsl(185, 74%, 50%).

Is #21CEDE accessible as text?

On white, #21CEDE has a contrast ratio of 1.92:1 (fails WCAG AA for body text); on black it is 10.95:1 (passes). For text placed on #21CEDE, use black for the best readability.

What is the closest Tailwind color to #21CEDE?

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

What colors go well with #21CEDE?

#21CEDE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #DE3121. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #21CEDE below.

Is #21CEDE good for buttons?

#21CEDE works well for buttons and highlights, but use black text on #21CEDE — white text only reaches 1.92:1, below the 4.5:1 needed for normal-size labels.

Is #21CEDE the same as CSS darkturquoise?

No — #21CEDE is not the CSS named color darkturquoise, but darkturquoise (#00CED1) is the closest CSS named color.

#21CEDE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #21CEDE

Not just a swatch — here's how #21CEDE works with other colors. Named schemes with #21CEDE in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #21CEDE 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 #21CEDE 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 #21CEDE Surface #14161A Highlight #F4F6F8 Secondary #596671 Accent #72F4FF

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 #21CEDE Secondary #C2EEF3 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 #21CEDE 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 #21CEDE 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 15/100

Cool

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

Softness 59/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 22/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 7/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 32/100

Low

A faint retro warmth without tipping into sepia.

Luxury 29/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 50/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 34/100

Low

Workable accent with care around contrast.

Surface fit 40/100

Low

Usable as a tinted surface in measured doses.

Print safety 66/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #21CEDE

For UI

For branding

For interior

For fashion

People also use #21CEDE with

Medium Spring Green Royal 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 9.7:1. Use

Subtle surface Use #D8F1F3 for cards and hover fills. Tint 80

Avoid beside #218FDE — 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 #21CEDE 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: #21CEDE;
  --color-base-rgb: 33 206 222;
  --color-base-oklch: oklch(77.9% 0.128 205.1);
  --color-50: #F1FDFE;
  --color-100: #DBF8FB;
  --color-200: #B8EFF4;
  --color-300: #88DFE7;
  --color-400: #5CCCD6;
  --color-500: #39B1BC;
  --color-600: #33878F;
  --color-700: #2A6065;
  --color-800: #1F3F42;
  --color-900: #152729;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  lagoon-blue: {
    50: '#F1FDFE',
    100: '#DBF8FB',
    200: '#B8EFF4',
    300: '#88DFE7',
    400: '#5CCCD6',
    500: '#39B1BC',
    600: '#33878F',
    700: '#2A6065',
    800: '#1F3F42',
    900: '#152729',
  },
}

$base: #21CEDE;
$base-ink: #141310;
$base-50: #F1FDFE;
$base-100: #DBF8FB;
$base-200: #B8EFF4;
$base-300: #88DFE7;
$base-400: #5CCCD6;
$base-500: #39B1BC;
$base-600: #33878F;
$base-700: #2A6065;
$base-800: #1F3F42;
$base-900: #152729;
$base-hover: #1BA5B1;
$base-subtle: #C3EBEE;

{
    "color": {
        "base": {
            "value": "#21CEDE",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FDFE",
                "type": "color"
            },
            "100": {
                "value": "#DBF8FB",
                "type": "color"
            },
            "200": {
                "value": "#B8EFF4",
                "type": "color"
            },
            "300": {
                "value": "#88DFE7",
                "type": "color"
            },
            "400": {
                "value": "#5CCCD6",
                "type": "color"
            },
            "500": {
                "value": "#39B1BC",
                "type": "color"
            },
            "600": {
                "value": "#33878F",
                "type": "color"
            },
            "700": {
                "value": "#2A6065",
                "type": "color"
            },
            "800": {
                "value": "#1F3F42",
                "type": "color"
            },
            "900": {
                "value": "#152729",
                "type": "color"
            }
        }
    }
}