What color is #245ACE?

#245ACE is a medium, vivid blue. In RGB it is rgb(36, 90, 206), and in HSL hsl(221, 70%, 47%).

Is #245ACE accessible as text?

On white, #245ACE has a contrast ratio of 6.12:1 (passes WCAG AA for body text); on black it is 3.43:1 (fails). For text placed on #245ACE, use white for the best readability.

What is the closest Tailwind color to #245ACE?

The nearest Tailwind CSS token is blue-700 (#1447E6).

What colors go well with #245ACE?

#245ACE pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CC9724. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #245ACE below.

Is #245ACE good for buttons?

#245ACE works well for buttons and highlights, but use white text on #245ACE — black text only reaches 3.43:1, below the 4.5:1 needed for normal-size labels.

Is #245ACE the same as CSS royalblue?

No — #245ACE is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#245ACE Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #245ACE

Not just a swatch — here's how #245ACE works with other colors. Named schemes with #245ACE in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #245ACE Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4E82ED

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.

Coastal Morning Lead · 5 colors

Lead #245ACE Accent #A5C4C1 Surface #DDDBBF 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.

Berry & Cream Lead · 5 colors

Lead #245ACE Surface #F6E5D8 Anchor #5A2144 Accent #E4C2CA 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 #245ACE Secondary #788EB6 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.

Sunset Warmth Glow · 5 colors

Glow #245ACE Secondary #E76A75 Accent #F79151 Anchor #573B58 Surface #EEEBD6

Cerulean 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 #245ACE 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 8/100

Cool

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 53/100

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 27/100

Low

A faint retro warmth without tipping into sepia.

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 73/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 90/100

Very high

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

Surface fit 8/100

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 #245ACE

For UI

For branding

For interior

For fashion

People also use #245ACE with

Lagoon Blue Han Purple Dijon 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 6.1:1. Use

Subtle surface Use #D6DFF2 for cards and hover fills. Tint 80

Avoid beside #2724CC — 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 #245ACE 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: #245ACE;
  --color-base-rgb: 36 90 206;
  --color-base-oklch: oklch(50.4% 0.189 262.8);
  --color-50: #F1F5FD;
  --color-100: #DBE5FA;
  --color-200: #BACCF3;
  --color-300: #8AA7E5;
  --color-400: #5F84D3;
  --color-500: #3D64B8;
  --color-600: #35518C;
  --color-700: #2B3D64;
  --color-800: #202A41;
  --color-900: #151B28;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cerulean: {
    50: '#F1F5FD',
    100: '#DBE5FA',
    200: '#BACCF3',
    300: '#8AA7E5',
    400: '#5F84D3',
    500: '#3D64B8',
    600: '#35518C',
    700: '#2B3D64',
    800: '#202A41',
    900: '#151B28',
  },
}

$base: #245ACE;
$base-ink: #FFFFFF;
$base-50: #F1F5FD;
$base-100: #DBE5FA;
$base-200: #BACCF3;
$base-300: #8AA7E5;
$base-400: #5F84D3;
$base-500: #3D64B8;
$base-600: #35518C;
$base-700: #2B3D64;
$base-800: #202A41;
$base-900: #151B28;
$base-hover: #1D47A3;
$base-subtle: #C1CFEC;

{
    "color": {
        "base": {
            "value": "#245ACE",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F5FD",
                "type": "color"
            },
            "100": {
                "value": "#DBE5FA",
                "type": "color"
            },
            "200": {
                "value": "#BACCF3",
                "type": "color"
            },
            "300": {
                "value": "#8AA7E5",
                "type": "color"
            },
            "400": {
                "value": "#5F84D3",
                "type": "color"
            },
            "500": {
                "value": "#3D64B8",
                "type": "color"
            },
            "600": {
                "value": "#35518C",
                "type": "color"
            },
            "700": {
                "value": "#2B3D64",
                "type": "color"
            },
            "800": {
                "value": "#202A41",
                "type": "color"
            },
            "900": {
                "value": "#151B28",
                "type": "color"
            }
        }
    }
}