What color is #374AAA?

#374AAA is a medium blue. In RGB it is rgb(55, 74, 170), and in HSL hsl(230, 51%, 44%).

Is #374AAA accessible as text?

On white, #374AAA has a contrast ratio of 7.71:1 (passes WCAG AA for body text); on black it is 2.72:1 (fails). For text placed on #374AAA, use white for the best readability.

What is the closest Tailwind color to #374AAA?

The nearest Tailwind CSS token is blue-800 (#193CB8).

What colors go well with #374AAA?

#374AAA pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A99637. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #374AAA below.

Is #374AAA good for buttons?

#374AAA works well for buttons and highlights, but use white text on #374AAA — black text only reaches 2.72:1, below the 4.5:1 needed for normal-size labels.

Is #374AAA the same as CSS darkslateblue?

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

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

Palettes built on #374AAA

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

Coastal Morning Lead · 5 colors

Lead #374AAA 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 #374AAA Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #5970C9

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 #374AAA Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #582239

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 #374AAA Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 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 #374AAA Secondary #717C9F 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 #374AAA 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 15/100

Cool

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

Softness 34/100

Low

Middle-weight — neither delicate nor heavy.

Depth 57/100

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 35/100

Low

A faint retro warmth without tipping into sepia.

Luxury 59/100

Moderate

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

Brand distinctiveness 42/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 89/100

Very high

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

Surface fit 11/100

Very low

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

Print safety 74/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #374AAA

For UI

For branding

For interior

For fashion

People also use #374AAA with

Carolina Blue Grape Dark Goldenrod Gainsboro Prussian Blue

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 7.7:1. Use

Subtle surface Use #D8DBED for cards and hover fills. Tint 80

Avoid beside #4A37A9 — 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 #374AAA 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: #374AAA;
  --color-base-rgb: 55 74 170;
  --color-base-oklch: oklch(45.1% 0.155 270.5);
  --color-50: #F3F4FC;
  --color-100: #E0E3F6;
  --color-200: #C1C8EB;
  --color-300: #97A2D9;
  --color-400: #6F7DC3;
  --color-500: #4E5CA7;
  --color-600: #414C81;
  --color-700: #333A5C;
  --color-800: #24283D;
  --color-900: #181A26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cerulean: {
    50: '#F3F4FC',
    100: '#E0E3F6',
    200: '#C1C8EB',
    300: '#97A2D9',
    400: '#6F7DC3',
    500: '#4E5CA7',
    600: '#414C81',
    700: '#333A5C',
    800: '#24283D',
    900: '#181A26',
  },
}

$base: #374AAA;
$base-ink: #FFFFFF;
$base-50: #F3F4FC;
$base-100: #E0E3F6;
$base-200: #C1C8EB;
$base-300: #97A2D9;
$base-400: #6F7DC3;
$base-500: #4E5CA7;
$base-600: #414C81;
$base-700: #333A5C;
$base-800: #24283D;
$base-900: #181A26;
$base-hover: #2C3B88;
$base-subtle: #C4C9E5;

{
    "color": {
        "base": {
            "value": "#374AAA",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F4FC",
                "type": "color"
            },
            "100": {
                "value": "#E0E3F6",
                "type": "color"
            },
            "200": {
                "value": "#C1C8EB",
                "type": "color"
            },
            "300": {
                "value": "#97A2D9",
                "type": "color"
            },
            "400": {
                "value": "#6F7DC3",
                "type": "color"
            },
            "500": {
                "value": "#4E5CA7",
                "type": "color"
            },
            "600": {
                "value": "#414C81",
                "type": "color"
            },
            "700": {
                "value": "#333A5C",
                "type": "color"
            },
            "800": {
                "value": "#24283D",
                "type": "color"
            },
            "900": {
                "value": "#181A26",
                "type": "color"
            }
        }
    }
}

Palettes built on #374AAA

Color Lab

Pairs with #374AAA

UI roles & guardrails

In real applications

Scales

Every model

Export