What color is #5399BC?

#5399BC is a medium cyan-blue. In RGB it is rgb(83, 153, 188), and in HSL hsl(200, 44%, 53%).

Is #5399BC accessible as text?

On white, #5399BC has a contrast ratio of 3.16:1 (fails WCAG AA for body text); on black it is 6.65:1 (passes). For text placed on #5399BC, use black for the best readability.

What is the closest Tailwind color to #5399BC?

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

What colors go well with #5399BC?

#5399BC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BC7652. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #5399BC below.

Is #5399BC good for buttons?

#5399BC works well for buttons and highlights, but use black text on #5399BC — white text only reaches 3.16:1, below the 4.5:1 needed for normal-size labels.

Is #5399BC the same as CSS cadetblue?

No — #5399BC is not the CSS named color cadetblue, but cadetblue (#5F9EA0) is the closest CSS named color.

#5399BC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #5399BC

Not just a swatch — here's how #5399BC works with other colors. Named schemes with #5399BC in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #5399BC 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.

Coastal Morning Lead · 5 colors

Lead #5399BC Accent #A6C4C0 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.

Japanese Sand Base · 5 colors

Base #5399BC Surface #ECEADC Highlight #F4F2E7 Secondary #B3B2A0 Ink #2A2723

Ocean Blue sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Tech Product Signal · 5 colors

Signal #5399BC Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #80BEDF

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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #5399BC Secondary #A8BFCC 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.

Build a working theme in the generator →

Color Lab

How #5399BC 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 56/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 34/100

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 51/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 42/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 34/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 69/100

High

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

Surface fit 40/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 77/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #5399BC

For UI

For branding

For interior

For fashion

People also use #5399BC with

Medium Aquamarine Tanzanite Copper 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 5.9:1. Use

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

Avoid beside #5276BC — 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 #5399BC at work across the surfaces designers actually ship.

Website / UI

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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: #5399BC;
  --color-base-rgb: 83 153 188;
  --color-base-oklch: oklch(65.1% 0.088 232.0);
  --color-50: #F4F9FB;
  --color-100: #E1EEF4;
  --color-200: #C4DCE8;
  --color-300: #9BC1D4;
  --color-400: #75A5BD;
  --color-500: #5487A1;
  --color-600: #466A7C;
  --color-700: #364D59;
  --color-800: #26343B;
  --color-900: #192125;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  ocean-blue: {
    50: '#F4F9FB',
    100: '#E1EEF4',
    200: '#C4DCE8',
    300: '#9BC1D4',
    400: '#75A5BD',
    500: '#5487A1',
    600: '#466A7C',
    700: '#364D59',
    800: '#26343B',
    900: '#192125',
  },
}

$base: #5399BC;
$base-ink: #141310;
$base-50: #F4F9FB;
$base-100: #E1EEF4;
$base-200: #C4DCE8;
$base-300: #9BC1D4;
$base-400: #75A5BD;
$base-500: #5487A1;
$base-600: #466A7C;
$base-700: #364D59;
$base-800: #26343B;
$base-900: #192125;
$base-hover: #3D7C9C;
$base-subtle: #CFDFE7;

{
    "color": {
        "base": {
            "value": "#5399BC",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F9FB",
                "type": "color"
            },
            "100": {
                "value": "#E1EEF4",
                "type": "color"
            },
            "200": {
                "value": "#C4DCE8",
                "type": "color"
            },
            "300": {
                "value": "#9BC1D4",
                "type": "color"
            },
            "400": {
                "value": "#75A5BD",
                "type": "color"
            },
            "500": {
                "value": "#5487A1",
                "type": "color"
            },
            "600": {
                "value": "#466A7C",
                "type": "color"
            },
            "700": {
                "value": "#364D59",
                "type": "color"
            },
            "800": {
                "value": "#26343B",
                "type": "color"
            },
            "900": {
                "value": "#192125",
                "type": "color"
            }
        }
    }
}

Palettes built on #5399BC

Color Lab

Pairs with #5399BC

UI roles & guardrails

In real applications

Scales

Every model

Export