What color is #3374BE?

#3374BE is a medium blue. In RGB it is rgb(51, 116, 190), and in HSL hsl(212, 58%, 47%).

Is #3374BE accessible as text?

On white, #3374BE has a contrast ratio of 4.79:1 (passes WCAG AA for body text); on black it is 4.38:1 (fails). For text placed on #3374BE, use white for the best readability.

What is the closest Tailwind color to #3374BE?

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

What colors go well with #3374BE?

#3374BE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #BD7C32. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #3374BE below.

Is #3374BE good for buttons?

#3374BE works well for buttons and highlights, but use white text on #3374BE — black text only reaches 4.38:1, below the 4.5:1 needed for normal-size labels.

Is #3374BE the same as CSS steelblue?

No — #3374BE is not the CSS named color steelblue, but steelblue (#4682B4) is the closest CSS named color.

#3374BE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #3374BE

Not just a swatch — here's how #3374BE works with other colors. Named schemes with #3374BE in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #3374BE Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

True 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 #3374BE Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #5F99DE

True 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 True Blue.

Vintage Leather Lead · 5 colors

Lead #3374BE Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57233B

True 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 #3374BE Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CB Secondary #322B2F

True 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 #3374BE Secondary #899FB9 Support #9D8F89 Ink #16140F

True 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 True Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #3374BE 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 14/100

Cool

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

Softness 43/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 46/100

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 47/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 51/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 36/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 99/100

Very high

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

Surface fit 17/100

Very low

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

Print safety 72/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #3374BE

For UI

For branding

For interior

For fashion

People also use #3374BE with

Medium Turquoise Egyptian Blue Copper Gainsboro Charcoal

UI roles & guardrails

Primary action Safe as a filled button with white label. AA

Body text Passes on white at 16px and above. Pass

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

Background Pair with white text at 4.8:1. Use

Subtle surface Use #D9E3EF for cards and hover fills. Tint 80

Avoid beside #3245BD — 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 #3374BE 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: #3374BE;
  --color-base-rgb: 51 116 190;
  --color-base-oklch: oklch(55.4% 0.133 253.8);
  --color-50: #F2F7FC;
  --color-100: #DEEAF7;
  --color-200: #BFD5EE;
  --color-300: #92B5DD;
  --color-400: #6996C9;
  --color-500: #4777AD;
  --color-600: #3D5E85;
  --color-700: #30465F;
  --color-800: #23303E;
  --color-900: #171E26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  true-blue: {
    50: '#F2F7FC',
    100: '#DEEAF7',
    200: '#BFD5EE',
    300: '#92B5DD',
    400: '#6996C9',
    500: '#4777AD',
    600: '#3D5E85',
    700: '#30465F',
    800: '#23303E',
    900: '#171E26',
  },
}

$base: #3374BE;
$base-ink: #FFFFFF;
$base-50: #F2F7FC;
$base-100: #DEEAF7;
$base-200: #BFD5EE;
$base-300: #92B5DD;
$base-400: #6996C9;
$base-500: #4777AD;
$base-600: #3D5E85;
$base-700: #30465F;
$base-800: #23303E;
$base-900: #171E26;
$base-hover: #285C97;
$base-subtle: #C5D5E8;

{
    "color": {
        "base": {
            "value": "#3374BE",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F7FC",
                "type": "color"
            },
            "100": {
                "value": "#DEEAF7",
                "type": "color"
            },
            "200": {
                "value": "#BFD5EE",
                "type": "color"
            },
            "300": {
                "value": "#92B5DD",
                "type": "color"
            },
            "400": {
                "value": "#6996C9",
                "type": "color"
            },
            "500": {
                "value": "#4777AD",
                "type": "color"
            },
            "600": {
                "value": "#3D5E85",
                "type": "color"
            },
            "700": {
                "value": "#30465F",
                "type": "color"
            },
            "800": {
                "value": "#23303E",
                "type": "color"
            },
            "900": {
                "value": "#171E26",
                "type": "color"
            }
        }
    }
}

Palettes built on #3374BE

Color Lab

Pairs with #3374BE

UI roles & guardrails

In real applications

Scales

Every model

Export