What color is #3FAEEF?

#3FAEEF is a medium, vivid cyan-blue. In RGB it is rgb(63, 174, 239), and in HSL hsl(202, 85%, 59%).

Is #3FAEEF accessible as text?

On white, #3FAEEF has a contrast ratio of 2.47:1 (fails WCAG AA for body text); on black it is 8.51:1 (passes). For text placed on #3FAEEF, use black for the best readability.

What is the closest Tailwind color to #3FAEEF?

The nearest Tailwind CSS token is sky-500 (#00A6F4).

What colors go well with #3FAEEF?

#3FAEEF pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #EF7F3E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3FAEEF below.

Is #3FAEEF good for buttons?

#3FAEEF works well for buttons and highlights, but use black text on #3FAEEF — white text only reaches 2.47:1, below the 4.5:1 needed for normal-size labels.

Is #3FAEEF the same as CSS deepskyblue?

No — #3FAEEF is not the CSS named color deepskyblue, but deepskyblue (#00BFFF) is the closest CSS named color.

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

Palettes built on #3FAEEF

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

Coastal Morning Lead · 5 colors

Lead #3FAEEF Accent #A5C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Picton 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 #3FAEEF Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Picton 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 #3FAEEF Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #77D4FF

Picton 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 Picton Blue.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #3FAEEF Secondary #B4D5EC Support #969386 Ink #16140F

Picton 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 Picton Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #3FAEEF Anchor #3C2925 Surface #EAE5D0 Accent #7B9E77 Secondary #393933

Picton 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 #3FAEEF 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 10/100

Cool

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

Softness 54/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 29/100

Low

Airy and open — recedes, leaves the composition light.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 35/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 53/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 55/100

Moderate

Workable accent with care around contrast.

Surface fit 32/100

Low

Usable as a tinted surface in measured doses.

Print safety 67/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #3FAEEF

For UI

For branding

For interior

For fashion

People also use #3FAEEF with

Seafoam Green Neon Blue Cadmium Orange Platinum Charcoal

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AAA

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 7.5:1. Use

Subtle surface Use #DDEEF7 for cards and hover fills. Tint 80

Avoid beside #3E73EF — 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 #3FAEEF 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: #3FAEEF;
  --color-base-rgb: 63 174 239;
  --color-base-oklch: oklch(71.7% 0.137 238.9);
  --color-50: #F0F9FE;
  --color-100: #D8EFFD;
  --color-200: #B4DFF9;
  --color-300: #81C6EE;
  --color-400: #53ACDF;
  --color-500: #308EC5;
  --color-600: #2C6F96;
  --color-700: #25516A;
  --color-800: #1C3645;
  --color-900: #13222A;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  picton-blue: {
    50: '#F0F9FE',
    100: '#D8EFFD',
    200: '#B4DFF9',
    300: '#81C6EE',
    400: '#53ACDF',
    500: '#308EC5',
    600: '#2C6F96',
    700: '#25516A',
    800: '#1C3645',
    900: '#13222A',
  },
}

$base: #3FAEEF;
$base-ink: #141310;
$base-50: #F0F9FE;
$base-100: #D8EFFD;
$base-200: #B4DFF9;
$base-300: #81C6EE;
$base-400: #53ACDF;
$base-500: #308EC5;
$base-600: #2C6F96;
$base-700: #25516A;
$base-800: #1C3645;
$base-900: #13222A;
$base-hover: #1294DF;
$base-subtle: #CBE5F4;

{
    "color": {
        "base": {
            "value": "#3FAEEF",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F9FE",
                "type": "color"
            },
            "100": {
                "value": "#D8EFFD",
                "type": "color"
            },
            "200": {
                "value": "#B4DFF9",
                "type": "color"
            },
            "300": {
                "value": "#81C6EE",
                "type": "color"
            },
            "400": {
                "value": "#53ACDF",
                "type": "color"
            },
            "500": {
                "value": "#308EC5",
                "type": "color"
            },
            "600": {
                "value": "#2C6F96",
                "type": "color"
            },
            "700": {
                "value": "#25516A",
                "type": "color"
            },
            "800": {
                "value": "#1C3645",
                "type": "color"
            },
            "900": {
                "value": "#13222A",
                "type": "color"
            }
        }
    }
}

Palettes built on #3FAEEF

Color Lab

Pairs with #3FAEEF

UI roles & guardrails

In real applications

Scales

Every model

Export