What color is #559BA0?

#559BA0 is a medium, muted cyan. In RGB it is rgb(85, 155, 160), and in HSL hsl(184, 31%, 48%).

Is #559BA0 accessible as text?

On white, #559BA0 has a contrast ratio of 3.19:1 (fails WCAG AA for body text); on black it is 6.58:1 (passes). For text placed on #559BA0, use black for the best readability.

What is the closest Tailwind color to #559BA0?

The nearest Tailwind CSS token is teal-600 (#009689).

What colors go well with #559BA0?

#559BA0 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A05A54. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #559BA0 below.

Is #559BA0 good for buttons?

#559BA0 works well for buttons and highlights, but use black text on #559BA0 — white text only reaches 3.19:1, below the 4.5:1 needed for normal-size labels.

Is #559BA0 the same as CSS cadetblue?

No — #559BA0 is not the CSS named color cadetblue, but cadetblue (#5F9EA0) is the closest CSS named color.

#559BA0 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #559BA0

Not just a swatch — here's how #559BA0 works with other colors. Named schemes with #559BA0 in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #559BA0 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 Anchor #2E3236

Cadet 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 #559BA0 Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

Cadet 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 #559BA0 Surface #EDEADC Highlight #F5F2E7 Secondary #B4B19F Ink #2A2723

Cadet 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 #559BA0 Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #81BFC4

Cadet 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 Cadet Blue.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #559BA0 Secondary #A8BEC0 Support #979286 Ink #16140F

Cadet 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 Cadet Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #559BA0 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 31/100

Cool

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

Softness 58/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 35/100

Low

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

Naturalness 8/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 48/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 41/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 27/100

Low

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

UI accent fit 65/100

High

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

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #559BA0

For UI

For branding

For interior

For fashion

People also use #559BA0 with

Asparagus Very Peri Mauve Taupe Platinum Dark Slate Gray

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 5.8:1. Use

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

Avoid beside #5482A0 — 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 #559BA0 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: #559BA0;
  --color-base-rgb: 85 155 160;
  --color-base-oklch: oklch(64.6% 0.071 201.6);
  --color-50: #F5FAFA;
  --color-100: #E4F0F1;
  --color-200: #CAE1E3;
  --color-300: #A4C9CC;
  --color-400: #7FAFB3;
  --color-500: #5F9296;
  --color-600: #4E7274;
  --color-700: #3B5254;
  --color-800: #293738;
  --color-900: #1A2223;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cadet-blue: {
    50: '#F5FAFA',
    100: '#E4F0F1',
    200: '#CAE1E3',
    300: '#A4C9CC',
    400: '#7FAFB3',
    500: '#5F9296',
    600: '#4E7274',
    700: '#3B5254',
    800: '#293738',
    900: '#1A2223',
  },
}

$base: #559BA0;
$base-ink: #141310;
$base-50: #F5FAFA;
$base-100: #E4F0F1;
$base-200: #CAE1E3;
$base-300: #A4C9CC;
$base-400: #7FAFB3;
$base-500: #5F9296;
$base-600: #4E7274;
$base-700: #3B5254;
$base-800: #293738;
$base-900: #1A2223;
$base-hover: #447C80;
$base-subtle: #CEDFE1;

{
    "color": {
        "base": {
            "value": "#559BA0",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5FAFA",
                "type": "color"
            },
            "100": {
                "value": "#E4F0F1",
                "type": "color"
            },
            "200": {
                "value": "#CAE1E3",
                "type": "color"
            },
            "300": {
                "value": "#A4C9CC",
                "type": "color"
            },
            "400": {
                "value": "#7FAFB3",
                "type": "color"
            },
            "500": {
                "value": "#5F9296",
                "type": "color"
            },
            "600": {
                "value": "#4E7274",
                "type": "color"
            },
            "700": {
                "value": "#3B5254",
                "type": "color"
            },
            "800": {
                "value": "#293738",
                "type": "color"
            },
            "900": {
                "value": "#1A2223",
                "type": "color"
            }
        }
    }
}

Palettes built on #559BA0

Color Lab

Pairs with #559BA0

UI roles & guardrails

In real applications

Scales

Every model

Export