What color is #519BE5?

#519BE5 is a medium, vivid blue. In RGB it is rgb(81, 155, 229), and in HSL hsl(210, 74%, 61%).

Is #519BE5 accessible as text?

On white, #519BE5 has a contrast ratio of 2.93:1 (fails WCAG AA for body text); on black it is 7.17:1 (passes). For text placed on #519BE5, use black for the best readability.

What is the closest Tailwind color to #519BE5?

The nearest Tailwind CSS token is blue-400 (#51A2FF).

What colors go well with #519BE5?

#519BE5 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #E59C52. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #519BE5 below.

Is #519BE5 good for buttons?

#519BE5 works well for buttons and highlights, but use black text on #519BE5 — white text only reaches 2.93:1, below the 4.5:1 needed for normal-size labels.

Is #519BE5 the same as CSS cornflowerblue?

No — #519BE5 is not the CSS named color cornflowerblue, but cornflowerblue (#6495ED) is the closest CSS named color.

#519BE5 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #519BE5

Not just a swatch — here's how #519BE5 works with other colors. Named schemes with #519BE5 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #519BE5 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

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

Nordic Calm Accent · 5 colors

Accent #519BE5 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Cornflower Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Tech Product Signal · 5 colors

Signal #519BE5 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #7FC1FF

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #519BE5 Secondary #ADC5E0 Support #959386 Ink #16140F

Cornflower Blue 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 Cornflower Blue carrying the quiet middle.

Modern Café Dominant · 5 colors

Dominant #519BE5 Anchor #3B2924 Surface #EAE5D0 Accent #799E78 Secondary #393933

Cornflower Blue anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Build a working theme in the generator →

Color Lab

How #519BE5 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 13/100

Cool

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

Softness 51/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 33/100

Low

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 40/100

Low

Understated — leans refined without going austere.

Brand distinctiveness 51/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 69/100

High

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

Surface fit 29/100

Low

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

Print safety 71/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #519BE5

For UI

For branding

For interior

For fashion

People also use #519BE5 with

Electric Blue Iris 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 Only on dark surfaces. Avoid

Background Pair with #141310 text at 6.3:1. Use

Subtle surface Use #E1EBF6 for cards and hover fills. Tint 80

Avoid beside #526AE5 — 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 #519BE5 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #519BE5;
  --color-base-rgb: 81 155 229;
  --color-base-oklch: oklch(67.5% 0.133 250.4);
  --color-50: #F1F7FE;
  --color-100: #DBEBFB;
  --color-200: #B8D6F4;
  --color-300: #88B8E7;
  --color-400: #5C99D6;
  --color-500: #397ABC;
  --color-600: #33618F;
  --color-700: #2A4765;
  --color-800: #1F3042;
  --color-900: #151F29;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  cornflower-blue: {
    50: '#F1F7FE',
    100: '#DBEBFB',
    200: '#B8D6F4',
    300: '#88B8E7',
    400: '#5C99D6',
    500: '#397ABC',
    600: '#33618F',
    700: '#2A4765',
    800: '#1F3042',
    900: '#151F29',
  },
}

$base: #519BE5;
$base-ink: #141310;
$base-50: #F1F7FE;
$base-100: #DBEBFB;
$base-200: #B8D6F4;
$base-300: #88B8E7;
$base-400: #5C99D6;
$base-500: #397ABC;
$base-600: #33618F;
$base-700: #2A4765;
$base-800: #1F3042;
$base-900: #151F29;
$base-hover: #207CD9;
$base-subtle: #D0E1F2;

{
    "color": {
        "base": {
            "value": "#519BE5",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F7FE",
                "type": "color"
            },
            "100": {
                "value": "#DBEBFB",
                "type": "color"
            },
            "200": {
                "value": "#B8D6F4",
                "type": "color"
            },
            "300": {
                "value": "#88B8E7",
                "type": "color"
            },
            "400": {
                "value": "#5C99D6",
                "type": "color"
            },
            "500": {
                "value": "#397ABC",
                "type": "color"
            },
            "600": {
                "value": "#33618F",
                "type": "color"
            },
            "700": {
                "value": "#2A4765",
                "type": "color"
            },
            "800": {
                "value": "#1F3042",
                "type": "color"
            },
            "900": {
                "value": "#151F29",
                "type": "color"
            }
        }
    }
}