What color is #21BFC2?

#21BFC2 is a medium, vivid cyan. In RGB it is rgb(33, 191, 194), and in HSL hsl(181, 71%, 45%).

Is #21BFC2 accessible as text?

On white, #21BFC2 has a contrast ratio of 2.26:1 (fails WCAG AA for body text); on black it is 9.30:1 (passes). For text placed on #21BFC2, use black for the best readability.

What is the closest Tailwind color to #21BFC2?

The nearest Tailwind CSS token is teal-500 (#00BBA7).

What colors go well with #21BFC2?

#21BFC2 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C42421. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #21BFC2 below.

Is #21BFC2 good for buttons?

#21BFC2 works well for buttons and highlights, but use black text on #21BFC2 — white text only reaches 2.26:1, below the 4.5:1 needed for normal-size labels.

Is #21BFC2 the same as CSS darkturquoise?

No — #21BFC2 is not the CSS named color darkturquoise, but darkturquoise (#00CED1) is the closest CSS named color.

#21BFC2 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #21BFC2

Not just a swatch — here's how #21BFC2 works with other colors. Named schemes with #21BFC2 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #21BFC2 Accent #A6C4BD Surface #E0DABE 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 #21BFC2 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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #21BFC2 Secondary #B6DEDE 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.

Tech Product Signal · 5 colors

Signal #21BFC2 Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #6DE4E6

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.

Modern Café Dominant · 5 colors

Dominant #21BFC2 Anchor #382C1E Surface #ECE4D0 Accent #809C72 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 #21BFC2 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 20/100

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 14/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 34/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 46/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 48/100

Moderate

Workable accent with care around contrast.

Surface fit 38/100

Low

Usable as a tinted surface in measured doses.

Print safety 70/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #21BFC2

For UI

For branding

For interior

For fashion

People also use #21BFC2 with

Shamrock Denim Blue 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 8.2:1. Use

Subtle surface Use #D5F1F1 for cards and hover fills. Tint 80

Avoid beside #218BC4 — 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 #21BFC2 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: #21BFC2;
  --color-base-rgb: 33 191 194;
  --color-base-oklch: oklch(73.2% 0.119 196.9);
  --color-50: #F1FDFD;
  --color-100: #DBF9FA;
  --color-200: #B9F2F3;
  --color-300: #8AE4E5;
  --color-400: #5ED2D4;
  --color-500: #3CB7B9;
  --color-600: #358C8D;
  --color-700: #2B6364;
  --color-800: #1F4142;
  --color-900: #152828;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  tiffany-blue: {
    50: '#F1FDFD',
    100: '#DBF9FA',
    200: '#B9F2F3',
    300: '#8AE4E5',
    400: '#5ED2D4',
    500: '#3CB7B9',
    600: '#358C8D',
    700: '#2B6364',
    800: '#1F4142',
    900: '#152828',
  },
}

$base: #21BFC2;
$base-ink: #141310;
$base-50: #F1FDFD;
$base-100: #DBF9FA;
$base-200: #B9F2F3;
$base-300: #8AE4E5;
$base-400: #5ED2D4;
$base-500: #3CB7B9;
$base-600: #358C8D;
$base-700: #2B6364;
$base-800: #1F4142;
$base-900: #152828;
$base-hover: #1B9B9D;
$base-subtle: #BEEBEC;

{
    "color": {
        "base": {
            "value": "#21BFC2",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FDFD",
                "type": "color"
            },
            "100": {
                "value": "#DBF9FA",
                "type": "color"
            },
            "200": {
                "value": "#B9F2F3",
                "type": "color"
            },
            "300": {
                "value": "#8AE4E5",
                "type": "color"
            },
            "400": {
                "value": "#5ED2D4",
                "type": "color"
            },
            "500": {
                "value": "#3CB7B9",
                "type": "color"
            },
            "600": {
                "value": "#358C8D",
                "type": "color"
            },
            "700": {
                "value": "#2B6364",
                "type": "color"
            },
            "800": {
                "value": "#1F4142",
                "type": "color"
            },
            "900": {
                "value": "#152828",
                "type": "color"
            }
        }
    }
}

Palettes built on #21BFC2

Color Lab

Pairs with #21BFC2

UI roles & guardrails

In real applications

Scales

Every model

Export