What color is #134DCB?

#134DCB is a medium, vivid blue. In RGB it is rgb(19, 77, 203), and in HSL hsl(221, 83%, 44%).

Is #134DCB accessible as text?

On white, #134DCB has a contrast ratio of 7.11:1 (passes WCAG AA for body text); on black it is 2.95:1 (fails). For text placed on #134DCB, use white for the best readability.

What is the closest Tailwind color to #134DCB?

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

What colors go well with #134DCB?

#134DCB pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #CD9213. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #134DCB below.

Is #134DCB good for buttons?

#134DCB works well for buttons and highlights, but use white text on #134DCB — black text only reaches 2.95:1, below the 4.5:1 needed for normal-size labels.

Is #134DCB the same as CSS royalblue?

No — #134DCB is not the CSS named color royalblue, but royalblue (#4169E1) is the closest CSS named color.

#134DCB Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #134DCB

Not just a swatch — here's how #134DCB works with other colors. Named schemes with #134DCB in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #134DCB Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #3F77E9

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 #134DCB 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 #134DCB 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 #134DCB Secondary #6D84AF 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 #134DCB 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 #134DCB 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 30/100

Low

Firm and assertive — carries weight and contrast.

Depth 57/100

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 21/100

Low

Clean and current — no dusty, aged cast.

Luxury 53/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 79/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 80/100

Very high

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

Surface fit 9/100

Very low

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

Print safety 62/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #134DCB

For UI

For branding

For interior

For fashion

People also use #134DCB with

Lagoon Blue Han Purple Caramel Gainsboro Charcoal

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 7.1:1. Use

Subtle surface Use #D1DCF4 for cards and hover fills. Tint 80

Avoid beside #1613CD — 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 #134DCB 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: #134DCB;
  --color-base-rgb: 19 77 203;
  --color-base-oklch: oklch(47.2% 0.204 262.7);
  --color-50: #F0F5FE;
  --color-100: #D9E4FD;
  --color-200: #B4CAF8;
  --color-300: #82A4ED;
  --color-400: #5480DE;
  --color-500: #3160C3;
  --color-600: #2D4E95;
  --color-700: #263B69;
  --color-800: #1C2944;
  --color-900: #131A2A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cerulean: {
    50: '#F0F5FE',
    100: '#D9E4FD',
    200: '#B4CAF8',
    300: '#82A4ED',
    400: '#5480DE',
    500: '#3160C3',
    600: '#2D4E95',
    700: '#263B69',
    800: '#1C2944',
    900: '#131A2A',
  },
}

$base: #134DCB;
$base-ink: #FFFFFF;
$base-50: #F0F5FE;
$base-100: #D9E4FD;
$base-200: #B4CAF8;
$base-300: #82A4ED;
$base-400: #5480DE;
$base-500: #3160C3;
$base-600: #2D4E95;
$base-700: #263B69;
$base-800: #1C2944;
$base-900: #131A2A;
$base-hover: #0F3EA4;
$base-subtle: #B9CAEF;

{
    "color": {
        "base": {
            "value": "#134DCB",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F5FE",
                "type": "color"
            },
            "100": {
                "value": "#D9E4FD",
                "type": "color"
            },
            "200": {
                "value": "#B4CAF8",
                "type": "color"
            },
            "300": {
                "value": "#82A4ED",
                "type": "color"
            },
            "400": {
                "value": "#5480DE",
                "type": "color"
            },
            "500": {
                "value": "#3160C3",
                "type": "color"
            },
            "600": {
                "value": "#2D4E95",
                "type": "color"
            },
            "700": {
                "value": "#263B69",
                "type": "color"
            },
            "800": {
                "value": "#1C2944",
                "type": "color"
            },
            "900": {
                "value": "#131A2A",
                "type": "color"
            }
        }
    }
}