What color is #428BC7?

#428BC7 is a medium cyan-blue. In RGB it is rgb(66, 139, 199), and in HSL hsl(207, 54%, 52%).

Is #428BC7 accessible as text?

On white, #428BC7 has a contrast ratio of 3.65:1 (fails WCAG AA for body text); on black it is 5.75:1 (passes). For text placed on #428BC7, use black for the best readability.

What is the closest Tailwind color to #428BC7?

The nearest Tailwind CSS token is sky-600 (#0084D1).

What colors go well with #428BC7?

#428BC7 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #C77E43. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #428BC7 below.

Is #428BC7 good for buttons?

#428BC7 works well for buttons and highlights, but use black text on #428BC7 — white text only reaches 3.65:1, below the 4.5:1 needed for normal-size labels.

Is #428BC7 the same as CSS steelblue?

No — #428BC7 is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#428BC7 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #428BC7

Not just a swatch — here's how #428BC7 works with other colors. Named schemes with #428BC7 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #428BC7 Accent #A5C4C0 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Ocean Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Tech Product Signal · 5 colors

Signal #428BC7 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #70B0E8

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 #428BC7 Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233C

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.

Berry & Cream Lead · 5 colors

Lead #428BC7 Surface #EDE9D6 Anchor #5A2246 Accent #E4C2CB Secondary #322B2F

Ocean Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #428BC7 Secondary #9CB3C9 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 #428BC7 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 17/100

Cool

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

Softness 49/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 39/100

Low

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 46/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 46/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 32/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 86/100

Very high

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

Surface fit 28/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 73/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #428BC7

For UI

For branding

For interior

For fashion

People also use #428BC7 with

Medium Turquoise Cerulean Bronze Gainsboro 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 #DDE7F0 for cards and hover fills. Tint 80

Avoid beside #435FC7 — 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 #428BC7 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: #428BC7;
  --color-base-rgb: 66 139 199;
  --color-base-oklch: oklch(61.7% 0.117 246.1);
  --color-50: #F3F8FC;
  --color-100: #DFECF6;
  --color-200: #C0D8EC;
  --color-300: #95BBDA;
  --color-400: #6C9DC6;
  --color-500: #4B7FAA;
  --color-600: #3F6483;
  --color-700: #324A5D;
  --color-800: #23323D;
  --color-900: #171F26;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  ocean-blue: {
    50: '#F3F8FC',
    100: '#DFECF6',
    200: '#C0D8EC',
    300: '#95BBDA',
    400: '#6C9DC6',
    500: '#4B7FAA',
    600: '#3F6483',
    700: '#324A5D',
    800: '#23323D',
    900: '#171F26',
  },
}

$base: #428BC7;
$base-ink: #141310;
$base-50: #F3F8FC;
$base-100: #DFECF6;
$base-200: #C0D8EC;
$base-300: #95BBDA;
$base-400: #6C9DC6;
$base-500: #4B7FAA;
$base-600: #3F6483;
$base-700: #324A5D;
$base-800: #23323D;
$base-900: #171F26;
$base-hover: #3170A3;
$base-subtle: #CBDCE9;

{
    "color": {
        "base": {
            "value": "#428BC7",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F8FC",
                "type": "color"
            },
            "100": {
                "value": "#DFECF6",
                "type": "color"
            },
            "200": {
                "value": "#C0D8EC",
                "type": "color"
            },
            "300": {
                "value": "#95BBDA",
                "type": "color"
            },
            "400": {
                "value": "#6C9DC6",
                "type": "color"
            },
            "500": {
                "value": "#4B7FAA",
                "type": "color"
            },
            "600": {
                "value": "#3F6483",
                "type": "color"
            },
            "700": {
                "value": "#324A5D",
                "type": "color"
            },
            "800": {
                "value": "#23323D",
                "type": "color"
            },
            "900": {
                "value": "#171F26",
                "type": "color"
            }
        }
    }
}

Palettes built on #428BC7

Color Lab

Pairs with #428BC7

UI roles & guardrails

In real applications

Scales

Every model

Export