What color is #559F8F?

#559F8F is a medium, muted teal. In RGB it is rgb(85, 159, 143), and in HSL hsl(167, 30%, 48%).

Is #559F8F accessible as text?

On white, #559F8F has a contrast ratio of 3.11:1 (fails WCAG AA for body text); on black it is 6.74:1 (passes). For text placed on #559F8F, use black for the best readability.

What is the closest Tailwind color to #559F8F?

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

What colors go well with #559F8F?

#559F8F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #9F5666. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #559F8F below.

Is #559F8F good for buttons?

#559F8F works well for buttons and highlights, but use black text on #559F8F — white text only reaches 3.11:1, below the 4.5:1 needed for normal-size labels.

Is #559F8F the same as CSS cadetblue?

No — #559F8F is not the CSS named color cadetblue, but cadetblue (#5F9EA0) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#559F8F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #559F8F

Not just a swatch — here's how #559F8F works with other colors. Named schemes with #559F8F in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #559F8F Secondary #AEB4B7 Surface #F1F2F0 Support #7994A4 Anchor #2D3236

Cadet Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Japanese Sand Base · 5 colors

Base #559F8F Surface #EDEADC Highlight #F5F1E7 Secondary #B5B19F 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.

Coastal Morning Lead · 5 colors

Lead #559F8F Accent #A7C4BC Surface #E0D9BE Secondary #9AA0A0 Anchor #1C3549

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

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #559F8F Secondary #A9C1BA 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.

Tech Product Signal · 5 colors

Signal #559F8F Surface #14161A Highlight #F4F6F8 Secondary #586771 Accent #82C3B4

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.

Build a working theme in the generator →

Color Lab

How #559F8F 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 36/100

Cool

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

Softness 57/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 34/100

Low

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

Naturalness 36/100

Low

Loosely natural — an earthy edge without being rustic.

Vintage feel 54/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 41/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 30/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 67/100

High

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

Surface fit 43/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #559F8F

For UI

For branding

For interior

For fashion

People also use #559F8F with

Asparagus Air Force Blue 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 6.0:1. Use

Subtle surface Use #DFEAE8 for cards and hover fills. Tint 80

Avoid beside #56979F — 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 #559F8F 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: #559F8F;
  --color-base-rgb: 85 159 143;
  --color-base-oklch: oklch(65.0% 0.078 178.0);
  --color-50: #F5FAF9;
  --color-100: #E4F1EE;
  --color-200: #CAE2DD;
  --color-300: #A4CBC3;
  --color-400: #80B2A7;
  --color-500: #609589;
  --color-600: #4E746B;
  --color-700: #3B544E;
  --color-800: #293835;
  --color-900: #1B2321;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cadet-blue: {
    50: '#F5FAF9',
    100: '#E4F1EE',
    200: '#CAE2DD',
    300: '#A4CBC3',
    400: '#80B2A7',
    500: '#609589',
    600: '#4E746B',
    700: '#3B544E',
    800: '#293835',
    900: '#1B2321',
  },
}

$base: #559F8F;
$base-ink: #141310;
$base-50: #F5FAF9;
$base-100: #E4F1EE;
$base-200: #CAE2DD;
$base-300: #A4CBC3;
$base-400: #80B2A7;
$base-500: #609589;
$base-600: #4E746B;
$base-700: #3B544E;
$base-800: #293835;
$base-900: #1B2321;
$base-hover: #457F73;
$base-subtle: #CEE0DC;

{
    "color": {
        "base": {
            "value": "#559F8F",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5FAF9",
                "type": "color"
            },
            "100": {
                "value": "#E4F1EE",
                "type": "color"
            },
            "200": {
                "value": "#CAE2DD",
                "type": "color"
            },
            "300": {
                "value": "#A4CBC3",
                "type": "color"
            },
            "400": {
                "value": "#80B2A7",
                "type": "color"
            },
            "500": {
                "value": "#609589",
                "type": "color"
            },
            "600": {
                "value": "#4E746B",
                "type": "color"
            },
            "700": {
                "value": "#3B544E",
                "type": "color"
            },
            "800": {
                "value": "#293835",
                "type": "color"
            },
            "900": {
                "value": "#1B2321",
                "type": "color"
            }
        }
    }
}

Palettes built on #559F8F

Color Lab

Pairs with #559F8F

UI roles & guardrails

In real applications

Scales

Every model

Export