What color is #42B2C8?

#42B2C8 is a medium cyan. In RGB it is rgb(66, 178, 200), and in HSL hsl(190, 55%, 52%).

Is #42B2C8 accessible as text?

On white, #42B2C8 has a contrast ratio of 2.49:1 (fails WCAG AA for body text); on black it is 8.43:1 (passes). For text placed on #42B2C8, use black for the best readability.

What is the closest Tailwind color to #42B2C8?

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

What colors go well with #42B2C8?

#42B2C8 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C85841. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #42B2C8 below.

Is #42B2C8 good for buttons?

#42B2C8 works well for buttons and highlights, but use black text on #42B2C8 — white text only reaches 2.49:1, below the 4.5:1 needed for normal-size labels.

Is #42B2C8 the same as CSS lightseagreen?

No — #42B2C8 is not the CSS named color lightseagreen, but lightseagreen (#20B2AA) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#42B2C8 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #42B2C8

Not just a swatch — here's how #42B2C8 works with other colors. Named schemes with #42B2C8 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #42B2C8 Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1E3549

Verdigris 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 #42B2C8 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

Verdigris 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 #42B2C8 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #79D7EB

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #42B2C8 Secondary #B4D4DC Support #979286 Ink #16140F

Verdigris 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 Verdigris carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #42B2C8 Anchor #372C1D Surface #EBE5D0 Accent #7E9D74 Secondary #3A3933

Verdigris 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 #42B2C8 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 58/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 29/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 4/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 37/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 40/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 54/100

Moderate

Workable accent with care around contrast.

Surface fit 41/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 72/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #42B2C8

For UI

For branding

For interior

For fashion

People also use #42B2C8 with

Medium Aquamarine Royal Blue Indian 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 7.5:1. Use

Subtle surface Use #DDEDF0 for cards and hover fills. Tint 80

Avoid beside #4185C8 — 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 #42B2C8 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: #42B2C8;
  --color-base-rgb: 66 178 200;
  --color-base-oklch: oklch(70.9% 0.104 213.2);
  --color-50: #F3FAFC;
  --color-100: #DFF3F6;
  --color-200: #C0E5ED;
  --color-300: #94CFDB;
  --color-400: #6BB7C7;
  --color-500: #4A9BAB;
  --color-600: #3F7883;
  --color-700: #31565E;
  --color-800: #23393E;
  --color-900: #172426;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  verdigris: {
    50: '#F3FAFC',
    100: '#DFF3F6',
    200: '#C0E5ED',
    300: '#94CFDB',
    400: '#6BB7C7',
    500: '#4A9BAB',
    600: '#3F7883',
    700: '#31565E',
    800: '#23393E',
    900: '#172426',
  },
}

$base: #42B2C8;
$base-ink: #141310;
$base-50: #F3FAFC;
$base-100: #DFF3F6;
$base-200: #C0E5ED;
$base-300: #94CFDB;
$base-400: #6BB7C7;
$base-500: #4A9BAB;
$base-600: #3F7883;
$base-700: #31565E;
$base-800: #23393E;
$base-900: #172426;
$base-hover: #3091A4;
$base-subtle: #CBE5EA;

{
    "color": {
        "base": {
            "value": "#42B2C8",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FAFC",
                "type": "color"
            },
            "100": {
                "value": "#DFF3F6",
                "type": "color"
            },
            "200": {
                "value": "#C0E5ED",
                "type": "color"
            },
            "300": {
                "value": "#94CFDB",
                "type": "color"
            },
            "400": {
                "value": "#6BB7C7",
                "type": "color"
            },
            "500": {
                "value": "#4A9BAB",
                "type": "color"
            },
            "600": {
                "value": "#3F7883",
                "type": "color"
            },
            "700": {
                "value": "#31565E",
                "type": "color"
            },
            "800": {
                "value": "#23393E",
                "type": "color"
            },
            "900": {
                "value": "#172426",
                "type": "color"
            }
        }
    }
}

Palettes built on #42B2C8

Color Lab

Pairs with #42B2C8

UI roles & guardrails

In real applications

Scales

Every model

Export