What color is #181BEC?

#181BEC is a medium, vivid blue. In RGB it is rgb(24, 27, 236), and in HSL hsl(239, 85%, 51%).

Is #181BEC accessible as text?

On white, #181BEC has a contrast ratio of 8.73:1 (passes WCAG AA for body text); on black it is 2.41:1 (fails). For text placed on #181BEC, use white for the best readability.

What is the closest Tailwind color to #181BEC?

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

What colors go well with #181BEC?

#181BEC pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #ECE918. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #181BEC below.

Is #181BEC good for buttons?

#181BEC works well for buttons and highlights, but use white text on #181BEC — black text only reaches 2.41:1, below the 4.5:1 needed for normal-size labels.

Is #181BEC the same as CSS blue?

No — #181BEC is not the CSS named color blue, but blue (#0000FF) is the closest CSS named color.

#181BEC Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #181BEC

Not just a swatch — here's how #181BEC works with other colors. Named schemes with #181BEC in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #181BEC Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #315DFF

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 Blue.

Coastal Morning Lead · 5 colors

Lead #181BEC Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

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 #181BEC Surface #F6E5D8 Anchor #5B2144 Accent #E5C2CA Secondary #322B2F

Blue 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 #181BEC Secondary #6079B6 Support #9D8F88 Ink #18140F

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 Blue carrying the quiet middle.

Sunset Warmth Glow · 5 colors

Glow #181BEC Secondary #E86A74 Accent #F79251 Anchor #573B58 Surface #F7E7D7

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 #181BEC 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 10/100

Cool

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

Softness 20/100

Low

Firm and assertive — carries weight and contrast.

Depth 63/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 0/100

Very low

Clean and current — no dusty, aged cast.

Luxury 49/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 100/100

Very high

Bold and ownable — memorable as a primary brand color.

UI accent fit 38/100

Low

Workable accent with care around contrast.

Surface fit 11/100

Very low

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

Print safety 49/100

Moderate

Prints close, with a slight loss of vibrancy.

Pairs with #181BEC

For UI

For branding

For interior

For fashion

People also use #181BEC with

Picton Blue Blue Violet Citrine Gainsboro Prussian Blue

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

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 8.7:1. Use

Subtle surface Use #D7D7F5 for cards and hover fills. Tint 80

Avoid beside #5B18EC — 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 #181BEC 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: #181BEC;
  --color-base-rgb: 24 27 236;
  --color-base-oklch: oklch(44.3% 0.284 266.3);
  --color-50: #F0F1FE;
  --color-100: #D8D9FD;
  --color-200: #B4B5F9;
  --color-300: #8183EE;
  --color-400: #5355DF;
  --color-500: #3032C5;
  --color-600: #2C2E96;
  --color-700: #25266A;
  --color-800: #1C1D45;
  --color-900: #13132A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  blue: {
    50: '#F0F1FE',
    100: '#D8D9FD',
    200: '#B4B5F9',
    300: '#8183EE',
    400: '#5355DF',
    500: '#3032C5',
    600: '#2C2E96',
    700: '#25266A',
    800: '#1C1D45',
    900: '#13132A',
  },
}

$base: #181BEC;
$base-ink: #FFFFFF;
$base-50: #F0F1FE;
$base-100: #D8D9FD;
$base-200: #B4B5F9;
$base-300: #8183EE;
$base-400: #5355DF;
$base-500: #3032C5;
$base-600: #2C2E96;
$base-700: #25266A;
$base-800: #1C1D45;
$base-900: #13132A;
$base-hover: #1013C0;
$base-subtle: #C1C2F2;

{
    "color": {
        "base": {
            "value": "#181BEC",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F1FE",
                "type": "color"
            },
            "100": {
                "value": "#D8D9FD",
                "type": "color"
            },
            "200": {
                "value": "#B4B5F9",
                "type": "color"
            },
            "300": {
                "value": "#8183EE",
                "type": "color"
            },
            "400": {
                "value": "#5355DF",
                "type": "color"
            },
            "500": {
                "value": "#3032C5",
                "type": "color"
            },
            "600": {
                "value": "#2C2E96",
                "type": "color"
            },
            "700": {
                "value": "#25266A",
                "type": "color"
            },
            "800": {
                "value": "#1C1D45",
                "type": "color"
            },
            "900": {
                "value": "#13132A",
                "type": "color"
            }
        }
    }
}

Palettes built on #181BEC

Color Lab

Pairs with #181BEC

UI roles & guardrails

In real applications

Scales

Every model

Export