What color is #5599CD?

#5599CD is a medium cyan-blue. In RGB it is rgb(85, 153, 205), and in HSL hsl(206, 55%, 57%).

Is #5599CD accessible as text?

On white, #5599CD has a contrast ratio of 3.08:1 (fails WCAG AA for body text); on black it is 6.82:1 (passes). For text placed on #5599CD, use black for the best readability.

What is the closest Tailwind color to #5599CD?

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

What colors go well with #5599CD?

#5599CD pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CE8955. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #5599CD below.

Is #5599CD good for buttons?

#5599CD works well for buttons and highlights, but use black text on #5599CD — white text only reaches 3.08:1, below the 4.5:1 needed for normal-size labels.

Is #5599CD the same as CSS cornflowerblue?

No — #5599CD is not the CSS named color cornflowerblue, but cornflowerblue (#6495ED) is the closest CSS named color.

#5599CD Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #5599CD

Not just a swatch — here's how #5599CD works with other colors. Named schemes with #5599CD in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #5599CD Accent #A5C4C0 Surface #DEDBBF Secondary #9AA0A0 Anchor #1F344A

Carolina 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 #5599CD Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Carolina 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 #5599CD Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #82BEEF

Carolina 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 Carolina Blue.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #5599CD Secondary #AAC1D4 Support #969386 Ink #16140F

Carolina 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 Carolina Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #5599CD Anchor #3B2924 Surface #EAE5D0 Accent #7A9E77 Secondary #393933

Carolina Blue 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 #5599CD 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 54/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 34/100

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 42/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 40/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 71/100

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 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #5599CD

For UI

For branding

For interior

For fashion

People also use #5599CD with

Turquoise Slate Blue Peru 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 6.0:1. Use

Subtle surface Use #E0EAF2 for cards and hover fills. Tint 80

Avoid beside #5571CE — 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 #5599CD 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: #5599CD;
  --color-base-rgb: 85 153 205;
  --color-base-oklch: oklch(66.0% 0.104 243.4);
  --color-50: #F3F8FC;
  --color-100: #DFECF6;
  --color-200: #C0D9ED;
  --color-300: #94BCDB;
  --color-400: #6B9FC7;
  --color-500: #4A81AB;
  --color-600: #3F6583;
  --color-700: #314A5E;
  --color-800: #23323E;
  --color-900: #172026;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  carolina-blue: {
    50: '#F3F8FC',
    100: '#DFECF6',
    200: '#C0D9ED',
    300: '#94BCDB',
    400: '#6B9FC7',
    500: '#4A81AB',
    600: '#3F6583',
    700: '#314A5E',
    800: '#23323E',
    900: '#172026',
  },
}

$base: #5599CD;
$base-ink: #141310;
$base-50: #F3F8FC;
$base-100: #DFECF6;
$base-200: #C0D9ED;
$base-300: #94BCDB;
$base-400: #6B9FC7;
$base-500: #4A81AB;
$base-600: #3F6583;
$base-700: #314A5E;
$base-800: #23323E;
$base-900: #172026;
$base-hover: #347DB4;
$base-subtle: #D0E0EC;

{
    "color": {
        "base": {
            "value": "#5599CD",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F8FC",
                "type": "color"
            },
            "100": {
                "value": "#DFECF6",
                "type": "color"
            },
            "200": {
                "value": "#C0D9ED",
                "type": "color"
            },
            "300": {
                "value": "#94BCDB",
                "type": "color"
            },
            "400": {
                "value": "#6B9FC7",
                "type": "color"
            },
            "500": {
                "value": "#4A81AB",
                "type": "color"
            },
            "600": {
                "value": "#3F6583",
                "type": "color"
            },
            "700": {
                "value": "#314A5E",
                "type": "color"
            },
            "800": {
                "value": "#23323E",
                "type": "color"
            },
            "900": {
                "value": "#172026",
                "type": "color"
            }
        }
    }
}

Palettes built on #5599CD

Color Lab

Pairs with #5599CD

UI roles & guardrails

In real applications

Scales

Every model

Export