What color is #39999A?

#39999A is a medium cyan. In RGB it is rgb(57, 153, 154), and in HSL hsl(181, 46%, 41%).

Is #39999A accessible as text?

On white, #39999A has a contrast ratio of 3.39:1 (fails WCAG AA for body text); on black it is 6.20:1 (passes). For text placed on #39999A, use black for the best readability.

What is the closest Tailwind color to #39999A?

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

What colors go well with #39999A?

#39999A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #993A38. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #39999A below.

Is #39999A good for buttons?

#39999A works well for buttons and highlights, but use black text on #39999A — white text only reaches 3.39:1, below the 4.5:1 needed for normal-size labels.

Is #39999A the same as CSS cadetblue?

No — #39999A is not the CSS named color cadetblue, but cadetblue (#5F9EA0) is the closest CSS named color.

#39999A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #39999A

Not just a swatch — here's how #39999A works with other colors. Named schemes with #39999A in its natural role, and a note on why the supporting colors balance it.

Nordic Calm Accent · 5 colors

Accent #39999A Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A4 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 #39999A 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 #39999A Accent #A6C4BD Surface #E0DABE 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 #39999A Secondary #9EBABA 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 #39999A Surface #14161A Highlight #F4F6F8 Secondary #596771 Accent #6CBDBE

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.

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Color Lab

How #39999A 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 28/100

Cool

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

Softness 54/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 37/100

Low

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

Naturalness 14/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 56/100

Moderate

Faded, nostalgic quality — editorial, heritage and retro work.

Luxury 44/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 34/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 76/100

High

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

Surface fit 38/100

Low

Usable as a tinted surface in measured doses.

Print safety 78/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #39999A

For UI

For branding

For interior

For fashion

People also use #39999A with

Medium Sea Green Lapis Lazuli Chestnut 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 5.5:1. Use

Subtle surface Use #D7EBEB for cards and hover fills. Tint 80

Avoid beside #387799 — 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 #39999A 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: #39999A;
  --color-base-rgb: 57 153 154;
  --color-base-oklch: oklch(62.8% 0.088 196.1);
  --color-50: #F3FBFB;
  --color-100: #E1F4F5;
  --color-200: #C4E8E9;
  --color-300: #9AD4D5;
  --color-400: #73BEBF;
  --color-500: #52A2A3;
  --color-600: #447D7E;
  --color-700: #35595A;
  --color-800: #253B3C;
  --color-900: #182525;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cadet-blue: {
    50: '#F3FBFB',
    100: '#E1F4F5',
    200: '#C4E8E9',
    300: '#9AD4D5',
    400: '#73BEBF',
    500: '#52A2A3',
    600: '#447D7E',
    700: '#35595A',
    800: '#253B3C',
    900: '#182525',
  },
}

$base: #39999A;
$base-ink: #141310;
$base-50: #F3FBFB;
$base-100: #E1F4F5;
$base-200: #C4E8E9;
$base-300: #9AD4D5;
$base-400: #73BEBF;
$base-500: #52A2A3;
$base-600: #447D7E;
$base-700: #35595A;
$base-800: #253B3C;
$base-900: #182525;
$base-hover: #2D797A;
$base-subtle: #C2E1E2;

{
    "color": {
        "base": {
            "value": "#39999A",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FBFB",
                "type": "color"
            },
            "100": {
                "value": "#E1F4F5",
                "type": "color"
            },
            "200": {
                "value": "#C4E8E9",
                "type": "color"
            },
            "300": {
                "value": "#9AD4D5",
                "type": "color"
            },
            "400": {
                "value": "#73BEBF",
                "type": "color"
            },
            "500": {
                "value": "#52A2A3",
                "type": "color"
            },
            "600": {
                "value": "#447D7E",
                "type": "color"
            },
            "700": {
                "value": "#35595A",
                "type": "color"
            },
            "800": {
                "value": "#253B3C",
                "type": "color"
            },
            "900": {
                "value": "#182525",
                "type": "color"
            }
        }
    }
}

Palettes built on #39999A

Color Lab

Pairs with #39999A

UI roles & guardrails

In real applications

Scales

Every model

Export