What color is #307DE2?

#307DE2 is a medium, vivid blue. In RGB it is rgb(48, 125, 226), and in HSL hsl(214, 75%, 54%).

Is #307DE2 accessible as text?

On white, #307DE2 has a contrast ratio of 4.07:1 (fails WCAG AA for body text); on black it is 5.16:1 (passes). For text placed on #307DE2, use black for the best readability.

What is the closest Tailwind color to #307DE2?

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

What colors go well with #307DE2?

#307DE2 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #E29532. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #307DE2 below.

Is #307DE2 good for buttons?

#307DE2 works well for buttons and highlights, but use black text on #307DE2 — white text only reaches 4.07:1, below the 4.5:1 needed for normal-size labels.

Is #307DE2 the same as CSS royalblue?

No — #307DE2 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#307DE2 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #307DE2

Not just a swatch — here's how #307DE2 works with other colors. Named schemes with #307DE2 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #307DE2 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Azure 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 #307DE2 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #60A4FF

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.

Vintage Leather Lead · 5 colors

Lead #307DE2 Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57233B

Azure 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 #307DE2 Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CA 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 #F6F4EF Accent #307DE2 Secondary #92ABCF Support #9D8F89 Ink #16140F

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.

Build a working theme in the generator →

Color Lab

How #307DE2 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 5/100

Cool

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

Softness 41/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 42/100

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 32/100

Low

A faint retro warmth without tipping into sepia.

Luxury 45/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 46/100

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 17/100

Very low

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

Print safety 65/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #307DE2

For UI

For branding

For interior

For fashion

People also use #307DE2 with

Turquoise Han Purple Butterscotch 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 4.6:1. Use

Subtle surface Use #DBE6F4 for cards and hover fills. Tint 80

Avoid beside #3243E2 — 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 #307DE2 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: #307DE2;
  --color-base-rgb: 48 125 226;
  --color-base-oklch: oklch(59.6% 0.171 256.8);
  --color-50: #F1F7FE;
  --color-100: #DAE8FB;
  --color-200: #B8D2F5;
  --color-300: #87B1E8;
  --color-400: #5B91D7;
  --color-500: #3872BC;
  --color-600: #325B90;
  --color-700: #294366;
  --color-800: #1E2E42;
  --color-900: #141D29;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  azure: {
    50: '#F1F7FE',
    100: '#DAE8FB',
    200: '#B8D2F5',
    300: '#87B1E8',
    400: '#5B91D7',
    500: '#3872BC',
    600: '#325B90',
    700: '#294366',
    800: '#1E2E42',
    900: '#141D29',
  },
}

$base: #307DE2;
$base-ink: #141310;
$base-50: #F1F7FE;
$base-100: #DAE8FB;
$base-200: #B8D2F5;
$base-300: #87B1E8;
$base-400: #5B91D7;
$base-500: #3872BC;
$base-600: #325B90;
$base-700: #294366;
$base-800: #1E2E42;
$base-900: #141D29;
$base-hover: #1C63C1;
$base-subtle: #C8D9F0;

{
    "color": {
        "base": {
            "value": "#307DE2",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F7FE",
                "type": "color"
            },
            "100": {
                "value": "#DAE8FB",
                "type": "color"
            },
            "200": {
                "value": "#B8D2F5",
                "type": "color"
            },
            "300": {
                "value": "#87B1E8",
                "type": "color"
            },
            "400": {
                "value": "#5B91D7",
                "type": "color"
            },
            "500": {
                "value": "#3872BC",
                "type": "color"
            },
            "600": {
                "value": "#325B90",
                "type": "color"
            },
            "700": {
                "value": "#294366",
                "type": "color"
            },
            "800": {
                "value": "#1E2E42",
                "type": "color"
            },
            "900": {
                "value": "#141D29",
                "type": "color"
            }
        }
    }
}

Palettes built on #307DE2

Color Lab

Pairs with #307DE2

UI roles & guardrails

In real applications

Scales

Every model

Export