What color is #428FAE?

#428FAE is a medium cyan-blue. In RGB it is rgb(66, 143, 174), and in HSL hsl(197, 45%, 47%).

Is #428FAE accessible as text?

On white, #428FAE has a contrast ratio of 3.64:1 (fails WCAG AA for body text); on black it is 5.77:1 (passes). For text placed on #428FAE, use black for the best readability.

What is the closest Tailwind color to #428FAE?

The nearest Tailwind CSS token is cyan-600 (#0092B8).

What colors go well with #428FAE?

#428FAE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #AE6042. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #428FAE below.

Is #428FAE good for buttons?

#428FAE works well for buttons and highlights, but use black text on #428FAE — white text only reaches 3.64:1, below the 4.5:1 needed for normal-size labels.

Is #428FAE the same as CSS steelblue?

No — #428FAE is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#428FAE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #428FAE

Not just a swatch — here's how #428FAE works with other colors. Named schemes with #428FAE in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #428FAE Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Ocean 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 #428FAE Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A6 Anchor #2E3236

Ocean 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 #428FAE Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #71B4D0

Ocean 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 Ocean Blue.

Vintage Leather Lead · 5 colors

Lead #428FAE Secondary #6F5216 Surface #E2DCC0 Accent #385244 Anchor #56233D

Ocean Blue 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 #428FAE Secondary #9CB4BF Support #969386 Ink #16140F

Ocean 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 Ocean Blue carrying the quiet middle.

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Color Lab

How #428FAE 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 24/100

Cool

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

Softness 53/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 38/100

Low

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

Naturalness 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 54/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 45/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 24/100

Low

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

UI accent fit 79/100

High

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

Surface fit 36/100

Low

Usable as a tinted surface in measured doses.

Print safety 77/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #428FAE

For UI

For branding

For interior

For fashion

People also use #428FAE with

Medium Aquamarine Cerulean Sienna Platinum Charcoal

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

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 5.1:1. Use

Subtle surface Use #DBE8ED for cards and hover fills. Tint 80

Avoid beside #426BAE — 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 #428FAE 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: #428FAE;
  --color-base-rgb: 66 143 174;
  --color-base-oklch: oklch(61.4% 0.089 227.3);
  --color-50: #F4F9FB;
  --color-100: #E1EFF4;
  --color-200: #C4DEE8;
  --color-300: #9BC4D5;
  --color-400: #74A9BE;
  --color-500: #538CA2;
  --color-600: #456D7D;
  --color-700: #354F5A;
  --color-800: #26353B;
  --color-900: #192125;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  ocean-blue: {
    50: '#F4F9FB',
    100: '#E1EFF4',
    200: '#C4DEE8',
    300: '#9BC4D5',
    400: '#74A9BE',
    500: '#538CA2',
    600: '#456D7D',
    700: '#354F5A',
    800: '#26353B',
    900: '#192125',
  },
}

$base: #428FAE;
$base-ink: #141310;
$base-50: #F4F9FB;
$base-100: #E1EFF4;
$base-200: #C4DEE8;
$base-300: #9BC4D5;
$base-400: #74A9BE;
$base-500: #538CA2;
$base-600: #456D7D;
$base-700: #354F5A;
$base-800: #26353B;
$base-900: #192125;
$base-hover: #35738B;
$base-subtle: #C9DCE4;

{
    "color": {
        "base": {
            "value": "#428FAE",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F9FB",
                "type": "color"
            },
            "100": {
                "value": "#E1EFF4",
                "type": "color"
            },
            "200": {
                "value": "#C4DEE8",
                "type": "color"
            },
            "300": {
                "value": "#9BC4D5",
                "type": "color"
            },
            "400": {
                "value": "#74A9BE",
                "type": "color"
            },
            "500": {
                "value": "#538CA2",
                "type": "color"
            },
            "600": {
                "value": "#456D7D",
                "type": "color"
            },
            "700": {
                "value": "#354F5A",
                "type": "color"
            },
            "800": {
                "value": "#26353B",
                "type": "color"
            },
            "900": {
                "value": "#192125",
                "type": "color"
            }
        }
    }
}

Palettes built on #428FAE

Color Lab

Pairs with #428FAE

UI roles & guardrails

In real applications

Scales

Every model

Export