What color is #347EAF?

#347EAF is a medium cyan-blue. In RGB it is rgb(52, 126, 175), and in HSL hsl(204, 54%, 45%).

Is #347EAF accessible as text?

On white, #347EAF has a contrast ratio of 4.42:1 (fails WCAG AA for body text); on black it is 4.75:1 (passes). For text placed on #347EAF, use black for the best readability.

What is the closest Tailwind color to #347EAF?

The nearest Tailwind CSS token is sky-600 (#0084D1).

What colors go well with #347EAF?

#347EAF pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #B16635. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #347EAF below.

Is #347EAF good for buttons?

#347EAF works well for buttons and highlights, but use black text on #347EAF — white text only reaches 4.42:1, below the 4.5:1 needed for normal-size labels.

Is #347EAF the same as CSS steelblue?

No — #347EAF is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#347EAF Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #347EAF

Not just a swatch — here's how #347EAF works with other colors. Named schemes with #347EAF in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #347EAF Accent #A5C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

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

Tech Product Signal · 5 colors

Signal #347EAF Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #63A2D0

Steel 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 Steel Blue.

Vintage Leather Lead · 5 colors

Lead #347EAF Secondary #7F4439 Surface #E2DDC0 Accent #385245 Anchor #57233C

Steel Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Berry & Cream Lead · 5 colors

Lead #347EAF Surface #EEE9D6 Anchor #5A2246 Accent #E4C2CB Secondary #322B30

Steel Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #347EAF Secondary #8EA5B6 Support #969386 Ink #16140F

Steel 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 Steel Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #347EAF 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 19/100

Cool

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

Softness 47/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 43/100

Moderate

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 54/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 51/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 28/100

Low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 93/100

Very high

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

Surface fit 27/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 75/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #347EAF

For UI

For branding

For interior

For fashion

People also use #347EAF with

Medium Aquamarine Cobalt Blue Ginger Platinum Charcoal

UI roles & guardrails

Primary action Too mid-tone for a filled button — darken for the fill. AA Large

Body text Do not use for body copy on light surfaces. Avoid

Large display Fine for headings 24px+ on white. Pass

Background Pair with white text at 4.4:1. Use

Subtle surface Use #D8E5EE for cards and hover fills. Tint 80

Avoid beside #3556B1 — 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 #347EAF 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: #347EAF;
  --color-base-rgb: 52 126 175;
  --color-base-oklch: oklch(56.9% 0.105 241.2);
  --color-50: #F3F8FC;
  --color-100: #DFEDF6;
  --color-200: #C0DBEC;
  --color-300: #95BFDA;
  --color-400: #6CA2C6;
  --color-500: #4B84AA;
  --color-600: #3F6883;
  --color-700: #324C5D;
  --color-800: #23333D;
  --color-900: #172026;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  steel-blue: {
    50: '#F3F8FC',
    100: '#DFEDF6',
    200: '#C0DBEC',
    300: '#95BFDA',
    400: '#6CA2C6',
    500: '#4B84AA',
    600: '#3F6883',
    700: '#324C5D',
    800: '#23333D',
    900: '#172026',
  },
}

$base: #347EAF;
$base-ink: #141310;
$base-50: #F3F8FC;
$base-100: #DFEDF6;
$base-200: #C0DBEC;
$base-300: #95BFDA;
$base-400: #6CA2C6;
$base-500: #4B84AA;
$base-600: #3F6883;
$base-700: #324C5D;
$base-800: #23333D;
$base-900: #172026;
$base-hover: #2A668D;
$base-subtle: #C4D8E6;

{
    "color": {
        "base": {
            "value": "#347EAF",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F8FC",
                "type": "color"
            },
            "100": {
                "value": "#DFEDF6",
                "type": "color"
            },
            "200": {
                "value": "#C0DBEC",
                "type": "color"
            },
            "300": {
                "value": "#95BFDA",
                "type": "color"
            },
            "400": {
                "value": "#6CA2C6",
                "type": "color"
            },
            "500": {
                "value": "#4B84AA",
                "type": "color"
            },
            "600": {
                "value": "#3F6883",
                "type": "color"
            },
            "700": {
                "value": "#324C5D",
                "type": "color"
            },
            "800": {
                "value": "#23333D",
                "type": "color"
            },
            "900": {
                "value": "#172026",
                "type": "color"
            }
        }
    }
}

Palettes built on #347EAF

Color Lab

Pairs with #347EAF

UI roles & guardrails

In real applications

Scales

Every model

Export