What color is #3FA6B5?

#3FA6B5 is a medium cyan. In RGB it is rgb(63, 166, 181), and in HSL hsl(188, 48%, 48%).

Is #3FA6B5 accessible as text?

On white, #3FA6B5 has a contrast ratio of 2.86:1 (fails WCAG AA for body text); on black it is 7.33:1 (passes). For text placed on #3FA6B5, use black for the best readability.

What is the closest Tailwind color to #3FA6B5?

The nearest Tailwind CSS token is cyan-500 (#00B8DB).

What colors go well with #3FA6B5?

#3FA6B5 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #B54F40. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3FA6B5 below.

Is #3FA6B5 good for buttons?

#3FA6B5 works well for buttons and highlights, but use black text on #3FA6B5 — white text only reaches 2.86:1, below the 4.5:1 needed for normal-size labels.

Is #3FA6B5 the same as CSS cadetblue?

No — #3FA6B5 is not the CSS named color cadetblue, but cadetblue (#5F9EA0) is the closest CSS named color.

#3FA6B5 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3FA6B5

Not just a swatch — here's how #3FA6B5 works with other colors. Named schemes with #3FA6B5 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #3FA6B5 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.

Nordic Calm Accent · 5 colors

Accent #3FA6B5 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.

Tech Product Signal · 5 colors

Signal #3FA6B5 Surface #14161A Highlight #F4F6F8 Secondary #596671 Accent #74CBD9

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 #3FA6B5 Secondary #AAC8CD 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.

Modern Café Dominant · 5 colors

Dominant #3FA6B5 Anchor #372C1D Surface #EBE5D0 Accent #7F9D73 Secondary #3A3933

Cadet 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 #3FA6B5 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 24/100

Cool

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

Softness 56/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 33/100

Low

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

Naturalness 6/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 48/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 40/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 37/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 65/100

High

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

Surface fit 40/100

Low

Usable as a tinted surface in measured doses.

Print safety 74/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #3FA6B5

For UI

For branding

For interior

For fashion

People also use #3FA6B5 with

Medium Aquamarine Denim Blue Rust 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 Only on dark surfaces. Avoid

Background Pair with #141310 text at 6.5:1. Use

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

Avoid beside #407EB5 — 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 #3FA6B5 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: #3FA6B5;
  --color-base-rgb: 63 166 181;
  --color-base-oklch: oklch(67.2% 0.095 208.6);
  --color-50: #F3FAFB;
  --color-100: #E0F2F5;
  --color-200: #C3E5EA;
  --color-300: #99CED7;
  --color-400: #71B6C1;
  --color-500: #5099A5;
  --color-600: #43777F;
  --color-700: #34565B;
  --color-800: #25393C;
  --color-900: #182325;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cadet-blue: {
    50: '#F3FAFB',
    100: '#E0F2F5',
    200: '#C3E5EA',
    300: '#99CED7',
    400: '#71B6C1',
    500: '#5099A5',
    600: '#43777F',
    700: '#34565B',
    800: '#25393C',
    900: '#182325',
  },
}

$base: #3FA6B5;
$base-ink: #141310;
$base-50: #F3FAFB;
$base-100: #E0F2F5;
$base-200: #C3E5EA;
$base-300: #99CED7;
$base-400: #71B6C1;
$base-500: #5099A5;
$base-600: #43777F;
$base-700: #34565B;
$base-800: #25393C;
$base-900: #182325;
$base-hover: #338491;
$base-subtle: #C9E2E6;

{
    "color": {
        "base": {
            "value": "#3FA6B5",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3FAFB",
                "type": "color"
            },
            "100": {
                "value": "#E0F2F5",
                "type": "color"
            },
            "200": {
                "value": "#C3E5EA",
                "type": "color"
            },
            "300": {
                "value": "#99CED7",
                "type": "color"
            },
            "400": {
                "value": "#71B6C1",
                "type": "color"
            },
            "500": {
                "value": "#5099A5",
                "type": "color"
            },
            "600": {
                "value": "#43777F",
                "type": "color"
            },
            "700": {
                "value": "#34565B",
                "type": "color"
            },
            "800": {
                "value": "#25393C",
                "type": "color"
            },
            "900": {
                "value": "#182325",
                "type": "color"
            }
        }
    }
}

Palettes built on #3FA6B5

Color Lab

Pairs with #3FA6B5

UI roles & guardrails

In real applications

Scales

Every model

Export