What color is #156EE3?

#156EE3 is a medium, vivid blue. In RGB it is rgb(21, 110, 227), and in HSL hsl(214, 83%, 49%).

Is #156EE3 accessible as text?

On white, #156EE3 has a contrast ratio of 4.80:1 (passes WCAG AA for body text); on black it is 4.37:1 (fails). For text placed on #156EE3, use white for the best readability.

What is the closest Tailwind color to #156EE3?

The nearest Tailwind CSS token is blue-600 (#155DFC).

What colors go well with #156EE3?

#156EE3 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #E58B15. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #156EE3 below.

Is #156EE3 good for buttons?

#156EE3 works well for buttons and highlights, but use white text on #156EE3 — black text only reaches 4.37:1, below the 4.5:1 needed for normal-size labels.

Is #156EE3 the same as CSS royalblue?

No — #156EE3 is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#156EE3 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #156EE3

Not just a swatch — here's how #156EE3 works with other colors. Named schemes with #156EE3 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #156EE3 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4D96FF

Royal 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 Royal Blue.

Coastal Morning Lead · 5 colors

Lead #156EE3 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Royal Blue 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 #156EE3 Surface #EDE9D6 Anchor #5A2144 Accent #E4C2CA Secondary #322B2F

Royal Blue 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 #156EE3 Secondary #84A0C9 Support #9D8F89 Ink #16140F

Royal 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 Royal Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #156EE3 Secondary #E76A76 Accent #F79153 Anchor #573B58 Surface #EEEBD6

Royal Blue 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 #156EE3 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 6/100

Cool

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 47/100

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 26/100

Low

A faint retro warmth without tipping into sepia.

Luxury 47/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 75/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 87/100

Very high

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

Surface fit 13/100

Very low

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

Print safety 61/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #156EE3

For UI

For branding

For interior

For fashion

People also use #156EE3 with

Turquoise Ultramarine Peru 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 4.8:1. Use

Subtle surface Use #D5E3F5 for cards and hover fills. Tint 80

Avoid beside #152AE5 — 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 #156EE3 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: #156EE3;
  --color-base-rgb: 21 110 227;
  --color-base-oklch: oklch(55.9% 0.195 258.1);
  --color-50: #F0F6FE;
  --color-100: #D9E8FD;
  --color-200: #B4D2F8;
  --color-300: #82B0ED;
  --color-400: #5490DE;
  --color-500: #3171C3;
  --color-600: #2D5A95;
  --color-700: #264369;
  --color-800: #1C2E44;
  --color-900: #131D2A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  royal-blue: {
    50: '#F0F6FE',
    100: '#D9E8FD',
    200: '#B4D2F8',
    300: '#82B0ED',
    400: '#5490DE',
    500: '#3171C3',
    600: '#2D5A95',
    700: '#264369',
    800: '#1C2E44',
    900: '#131D2A',
  },
}

$base: #156EE3;
$base-ink: #FFFFFF;
$base-50: #F0F6FE;
$base-100: #D9E8FD;
$base-200: #B4D2F8;
$base-300: #82B0ED;
$base-400: #5490DE;
$base-500: #3171C3;
$base-600: #2D5A95;
$base-700: #264369;
$base-800: #1C2E44;
$base-900: #131D2A;
$base-hover: #1159B7;
$base-subtle: #BFD5F1;

{
    "color": {
        "base": {
            "value": "#156EE3",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F6FE",
                "type": "color"
            },
            "100": {
                "value": "#D9E8FD",
                "type": "color"
            },
            "200": {
                "value": "#B4D2F8",
                "type": "color"
            },
            "300": {
                "value": "#82B0ED",
                "type": "color"
            },
            "400": {
                "value": "#5490DE",
                "type": "color"
            },
            "500": {
                "value": "#3171C3",
                "type": "color"
            },
            "600": {
                "value": "#2D5A95",
                "type": "color"
            },
            "700": {
                "value": "#264369",
                "type": "color"
            },
            "800": {
                "value": "#1C2E44",
                "type": "color"
            },
            "900": {
                "value": "#131D2A",
                "type": "color"
            }
        }
    }
}