What color is #374FA4?

#374FA4 is a medium blue. In RGB it is rgb(55, 79, 164), and in HSL hsl(227, 50%, 43%).

Is #374FA4 accessible as text?

On white, #374FA4 has a contrast ratio of 7.45:1 (passes WCAG AA for body text); on black it is 2.82:1 (fails). For text placed on #374FA4, use white for the best readability.

What is the closest Tailwind color to #374FA4?

The nearest Tailwind CSS token is sky-800 (#00598A).

What colors go well with #374FA4?

#374FA4 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A48D37. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #374FA4 below.

Is #374FA4 good for buttons?

#374FA4 works well for buttons and highlights, but use white text on #374FA4 — black text only reaches 2.82:1, below the 4.5:1 needed for normal-size labels.

Is #374FA4 the same as CSS darkslateblue?

No — #374FA4 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#374FA4 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #374FA4

Not just a swatch — here's how #374FA4 works with other colors. Named schemes with #374FA4 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #374FA4 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Cerulean 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 #374FA4 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #5A74C4

Cerulean is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Cerulean.

Vintage Leather Lead · 5 colors

Lead #374FA4 Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #58223A

Cerulean 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 #374FA4 Surface #F6E5D8 Anchor #5B2143 Accent #E5C2CA Secondary #322B2F

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

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #374FA4 Secondary #737F9D Support #9D8F88 Ink #18140F

Cerulean 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 Cerulean carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #374FA4 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 17/100

Cool

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

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 56/100

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 40/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 59/100

Moderate

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 38/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 91/100

Very high

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

Surface fit 13/100

Very low

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

Print safety 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #374FA4

For UI

For branding

For interior

For fashion

People also use #374FA4 with

Carolina Blue Rebecca Purple Dark Goldenrod Gainsboro Gunmetal Gray

UI roles & guardrails

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

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 7.5:1. Use

Subtle surface Use #D7DCEC for cards and hover fills. Tint 80

Avoid beside #4437A4 — 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 #374FA4 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: #374FA4;
  --color-base-rgb: 55 79 164;
  --color-base-oklch: oklch(45.7% 0.140 268.5);
  --color-50: #F3F5FC;
  --color-100: #E0E4F5;
  --color-200: #C2CBEB;
  --color-300: #97A5D8;
  --color-400: #7082C2;
  --color-500: #4E61A6;
  --color-600: #424F80;
  --color-700: #333C5C;
  --color-800: #242A3C;
  --color-900: #181B25;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cerulean: {
    50: '#F3F5FC',
    100: '#E0E4F5',
    200: '#C2CBEB',
    300: '#97A5D8',
    400: '#7082C2',
    500: '#4E61A6',
    600: '#424F80',
    700: '#333C5C',
    800: '#242A3C',
    900: '#181B25',
  },
}

$base: #374FA4;
$base-ink: #FFFFFF;
$base-50: #F3F5FC;
$base-100: #E0E4F5;
$base-200: #C2CBEB;
$base-300: #97A5D8;
$base-400: #7082C2;
$base-500: #4E61A6;
$base-600: #424F80;
$base-700: #333C5C;
$base-800: #242A3C;
$base-900: #181B25;
$base-hover: #2C3F84;
$base-subtle: #C3CAE4;

{
    "color": {
        "base": {
            "value": "#374FA4",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F5FC",
                "type": "color"
            },
            "100": {
                "value": "#E0E4F5",
                "type": "color"
            },
            "200": {
                "value": "#C2CBEB",
                "type": "color"
            },
            "300": {
                "value": "#97A5D8",
                "type": "color"
            },
            "400": {
                "value": "#7082C2",
                "type": "color"
            },
            "500": {
                "value": "#4E61A6",
                "type": "color"
            },
            "600": {
                "value": "#424F80",
                "type": "color"
            },
            "700": {
                "value": "#333C5C",
                "type": "color"
            },
            "800": {
                "value": "#242A3C",
                "type": "color"
            },
            "900": {
                "value": "#181B25",
                "type": "color"
            }
        }
    }
}

Palettes built on #374FA4

Color Lab

Pairs with #374FA4

UI roles & guardrails

In real applications

Scales

Every model

Export