What color is #519FA3?

#519FA3 is a medium, muted cyan. In RGB it is rgb(81, 159, 163), and in HSL hsl(183, 34%, 48%).

Is #519FA3 accessible as text?

On white, #519FA3 has a contrast ratio of 3.07:1 (fails WCAG AA for body text); on black it is 6.84:1 (passes). For text placed on #519FA3, use black for the best readability.

What is the closest Tailwind color to #519FA3?

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

What colors go well with #519FA3?

#519FA3 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A45551. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #519FA3 below.

Is #519FA3 good for buttons?

#519FA3 works well for buttons and highlights, but use black text on #519FA3 — white text only reaches 3.07:1, below the 4.5:1 needed for normal-size labels.

Is #519FA3 the same as CSS cadetblue?

No — #519FA3 is not the CSS named color cadetblue, but cadetblue (#5F9EA0) is the closest CSS named color.

#519FA3 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #519FA3

Not just a swatch — here's how #519FA3 works with other colors. Named schemes with #519FA3 in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #519FA3 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.

Japanese Sand Base · 5 colors

Base #519FA3 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.

Coastal Morning Lead · 5 colors

Lead #519FA3 Accent #A6C4BD 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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #519FA3 Secondary #A9C2C3 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 #519FA3 Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #7FC4C7

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 #519FA3 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 30/100

Cool

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

Softness 58/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 34/100

Low

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

Naturalness 10/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 49/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 41/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 30/100

Low

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 44/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 80/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #519FA3

For UI

For branding

For interior

For fashion

People also use #519FA3 with

Dark Sea Green Very Peri Sienna 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 #DEEAEB for cards and hover fills. Tint 80

Avoid beside #5184A4 — 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 #519FA3 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

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: #519FA3;
  --color-base-rgb: 81 159 163;
  --color-base-oklch: oklch(65.5% 0.077 199.9);
  --color-50: #F4FAFA;
  --color-100: #E3F1F2;
  --color-200: #C8E3E4;
  --color-300: #A2CBCE;
  --color-400: #7DB2B5;
  --color-500: #5C9598;
  --color-600: #4C7476;
  --color-700: #3A5455;
  --color-800: #283839;
  --color-900: #1A2323;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cadet-blue: {
    50: '#F4FAFA',
    100: '#E3F1F2',
    200: '#C8E3E4',
    300: '#A2CBCE',
    400: '#7DB2B5',
    500: '#5C9598',
    600: '#4C7476',
    700: '#3A5455',
    800: '#283839',
    900: '#1A2323',
  },
}

$base: #519FA3;
$base-ink: #141310;
$base-50: #F4FAFA;
$base-100: #E3F1F2;
$base-200: #C8E3E4;
$base-300: #A2CBCE;
$base-400: #7DB2B5;
$base-500: #5C9598;
$base-600: #4C7476;
$base-700: #3A5455;
$base-800: #283839;
$base-900: #1A2323;
$base-hover: #418083;
$base-subtle: #CDE0E1;

{
    "color": {
        "base": {
            "value": "#519FA3",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4FAFA",
                "type": "color"
            },
            "100": {
                "value": "#E3F1F2",
                "type": "color"
            },
            "200": {
                "value": "#C8E3E4",
                "type": "color"
            },
            "300": {
                "value": "#A2CBCE",
                "type": "color"
            },
            "400": {
                "value": "#7DB2B5",
                "type": "color"
            },
            "500": {
                "value": "#5C9598",
                "type": "color"
            },
            "600": {
                "value": "#4C7476",
                "type": "color"
            },
            "700": {
                "value": "#3A5455",
                "type": "color"
            },
            "800": {
                "value": "#283839",
                "type": "color"
            },
            "900": {
                "value": "#1A2323",
                "type": "color"
            }
        }
    }
}

Palettes built on #519FA3

Color Lab

Pairs with #519FA3

UI roles & guardrails

In real applications

Scales

Every model

Export