What color is #4375F4?

#4375F4 is a medium, vivid blue. In RGB it is rgb(67, 117, 244), and in HSL hsl(223, 89%, 61%).

Is #4375F4 accessible as text?

On white, #4375F4 has a contrast ratio of 4.13:1 (fails WCAG AA for body text); on black it is 5.09:1 (passes). For text placed on #4375F4, use black for the best readability.

What is the closest Tailwind color to #4375F4?

The nearest Tailwind CSS token is blue-500 (#2B7FFF).

What colors go well with #4375F4?

#4375F4 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #F4C243. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #4375F4 below.

Is #4375F4 good for buttons?

#4375F4 works well for buttons and highlights, but use black text on #4375F4 — white text only reaches 4.13:1, below the 4.5:1 needed for normal-size labels.

Is #4375F4 the same as CSS royalblue?

No — #4375F4 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#4375F4 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #4375F4

Not just a swatch — here's how #4375F4 works with other colors. Named schemes with #4375F4 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #4375F4 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #6C9EFF

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

Coastal Morning Lead · 5 colors

Lead #4375F4 Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

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

Berry & Cream Lead · 5 colors

Lead #4375F4 Surface #F6E5D8 Anchor #5B2144 Accent #E5C2CA Secondary #322B2F

Azure 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 #4375F4 Secondary #95AAD7 Support #9D8F88 Ink #18140F

Azure 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 Azure carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #4375F4 Secondary #E76A75 Accent #F79251 Anchor #573B58 Surface #F7E7D7

Azure glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.

Build a working theme in the generator →

Color Lab

How #4375F4 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 9/100

Cool

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

Softness 38/100

Low

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 24/100

Low

Clean and current — no dusty, aged cast.

Luxury 43/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 77/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 81/100

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 64/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #4375F4

For UI

For branding

For interior

For fashion

People also use #4375F4 with

Bright Sky Violet Honey Gainsboro Charcoal

UI roles & guardrails

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

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

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

Background Pair with #141310 text at 4.5:1. Use

Subtle surface Use #DEE6F8 for cards and hover fills. Tint 80

Avoid beside #4C43F4 — 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 #4375F4 at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #4375F4;
  --color-base-rgb: 67 117 244;
  --color-base-oklch: oklch(59.8% 0.198 264.8);
  --color-50: #F0F4FE;
  --color-100: #D8E2FD;
  --color-200: #B2C7FA;
  --color-300: #7E9FF1;
  --color-400: #4F79E3;
  --color-500: #2C58C9;
  --color-600: #2A4998;
  --color-700: #23386B;
  --color-800: #1B2746;
  --color-900: #13192B;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  azure: {
    50: '#F0F4FE',
    100: '#D8E2FD',
    200: '#B2C7FA',
    300: '#7E9FF1',
    400: '#4F79E3',
    500: '#2C58C9',
    600: '#2A4998',
    700: '#23386B',
    800: '#1B2746',
    900: '#13192B',
  },
}

$base: #4375F4;
$base-ink: #141310;
$base-50: #F0F4FE;
$base-100: #D8E2FD;
$base-200: #B2C7FA;
$base-300: #7E9FF1;
$base-400: #4F79E3;
$base-500: #2C58C9;
$base-600: #2A4998;
$base-700: #23386B;
$base-800: #1B2746;
$base-900: #13192B;
$base-hover: #0E4CEB;
$base-subtle: #CDD8F5;

{
    "color": {
        "base": {
            "value": "#4375F4",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F4FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E2FD",
                "type": "color"
            },
            "200": {
                "value": "#B2C7FA",
                "type": "color"
            },
            "300": {
                "value": "#7E9FF1",
                "type": "color"
            },
            "400": {
                "value": "#4F79E3",
                "type": "color"
            },
            "500": {
                "value": "#2C58C9",
                "type": "color"
            },
            "600": {
                "value": "#2A4998",
                "type": "color"
            },
            "700": {
                "value": "#23386B",
                "type": "color"
            },
            "800": {
                "value": "#1B2746",
                "type": "color"
            },
            "900": {
                "value": "#13192B",
                "type": "color"
            }
        }
    }
}