What color is #428489?

#428489 is a medium cyan. In RGB it is rgb(66, 132, 137), and in HSL hsl(184, 35%, 40%).

Is #428489 accessible as text?

On white, #428489 has a contrast ratio of 4.29:1 (fails WCAG AA for body text); on black it is 4.89:1 (passes). For text placed on #428489, use black for the best readability.

What is the closest Tailwind color to #428489?

The nearest Tailwind CSS token is mist-500 (#67787C).

What colors go well with #428489?

#428489 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #8A4742. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #428489 below.

Is #428489 good for buttons?

#428489 works well for buttons and highlights, but use black text on #428489 — white text only reaches 4.29:1, below the 4.5:1 needed for normal-size labels.

Is #428489 the same as CSS darkcyan?

No — #428489 is not the CSS named color darkcyan, but darkcyan (#008B8B) is the closest CSS named color.

#428489 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #428489

Not just a swatch — here's how #428489 works with other colors. Named schemes with #428489 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #428489 Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

Dark Cyan 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 #428489 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

Dark Cyan 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 #428489 Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #6EA8AC

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

Vintage Leather Lead · 5 colors

Lead #428489 Secondary #715017 Surface #E3DCC0 Accent #395143 Anchor #552340

Dark Cyan plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #428489 Secondary #92A7A8 Support #979286 Ink #16140F

Dark Cyan 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 Dark Cyan carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #428489 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 32/100

Cool

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

Softness 52/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 42/100

Moderate

Mid depth — usable as an accent or a muted ground.

Naturalness 7/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 53/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 48/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 18/100

Very low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 78/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 39/100

Low

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #428489

For UI

For branding

For interior

For fashion

People also use #428489 with

Jungle Green Lapis Lazuli Cordovan Platinum Dark Slate Gray

UI roles & guardrails

Primary action Too mid-tone for a filled button — darken for the fill. AA Large

Body text Do not use for body copy on light surfaces. Avoid

Large display Fine for headings 24px+ on white. Pass

Background Pair with #141310 text at 4.3:1. Use

Subtle surface Use #D9E7E8 for cards and hover fills. Tint 80

Avoid beside #426D8A — 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 #428489 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: #428489;
  --color-base-rgb: 66 132 137;
  --color-base-oklch: oklch(57.2% 0.068 202.0);
  --color-50: #F4FAFA;
  --color-100: #E3F1F2;
  --color-200: #C8E3E4;
  --color-300: #A1CBCE;
  --color-400: #7CB2B6;
  --color-500: #5C9599;
  --color-600: #4B7477;
  --color-700: #395456;
  --color-800: #283839;
  --color-900: #1A2323;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  dark-cyan: {
    50: '#F4FAFA',
    100: '#E3F1F2',
    200: '#C8E3E4',
    300: '#A1CBCE',
    400: '#7CB2B6',
    500: '#5C9599',
    600: '#4B7477',
    700: '#395456',
    800: '#283839',
    900: '#1A2323',
  },
}

$base: #428489;
$base-ink: #141310;
$base-50: #F4FAFA;
$base-100: #E3F1F2;
$base-200: #C8E3E4;
$base-300: #A1CBCE;
$base-400: #7CB2B6;
$base-500: #5C9599;
$base-600: #4B7477;
$base-700: #395456;
$base-800: #283839;
$base-900: #1A2323;
$base-hover: #356A6E;
$base-subtle: #C5DCDD;

{
    "color": {
        "base": {
            "value": "#428489",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FAFA",
                "type": "color"
            },
            "100": {
                "value": "#E3F1F2",
                "type": "color"
            },
            "200": {
                "value": "#C8E3E4",
                "type": "color"
            },
            "300": {
                "value": "#A1CBCE",
                "type": "color"
            },
            "400": {
                "value": "#7CB2B6",
                "type": "color"
            },
            "500": {
                "value": "#5C9599",
                "type": "color"
            },
            "600": {
                "value": "#4B7477",
                "type": "color"
            },
            "700": {
                "value": "#395456",
                "type": "color"
            },
            "800": {
                "value": "#283839",
                "type": "color"
            },
            "900": {
                "value": "#1A2323",
                "type": "color"
            }
        }
    }
}

Palettes built on #428489

Color Lab

Pairs with #428489

UI roles & guardrails

In real applications

Scales

Every model

Export