What color is #133145?

#133145 is a very dark cyan-blue. In RGB it is rgb(19, 49, 69), and in HSL hsl(204, 57%, 17%).

Is #133145 accessible as text?

On white, #133145 has a contrast ratio of 13.52:1 (passes WCAG AA for body text); on black it is 1.55:1 (fails). For text placed on #133145, use white for the best readability.

What is the closest Tailwind color to #133145?

The nearest Tailwind CSS token is cyan-950 (#053345).

What colors go well with #133145?

#133145 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #442613. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #133145 below.

Is #133145 good for buttons?

#133145 works well for buttons and highlights, but use white text on #133145 — black text only reaches 1.55:1, below the 4.5:1 needed for normal-size labels.

Is #133145 the same as CSS midnightblue?

No — #133145 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#133145 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #133145

Not just a swatch — here's how #133145 works with other colors. Named schemes with #133145 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #133145 Accent #A5C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Prussian 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 #133145 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Prussian 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 #133145 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #365164

Prussian 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 Prussian Blue.

Vintage Leather Lead · 5 colors

Lead #133145 Secondary #7F4439 Surface #E2DDC0 Accent #385245 Anchor #57233C

Prussian Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #133145 Secondary #4A545C Support #969386 Ink #16140F

Prussian 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 Prussian Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #133145 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 35/100

Cool

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

Softness 30/100

Low

Firm and assertive — carries weight and contrast.

Depth 67/100

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 30/100

Low

A faint retro warmth without tipping into sepia.

Luxury 70/100

High

Restrained and premium — deep, quiet, high-end packaging and fashion.

Brand distinctiveness 20/100

Very low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 29/100

Low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 50/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #133145

For UI

For branding

For interior

For fashion

People also use #133145 with

Hunter Green Navy Bistre Platinum 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 13.5:1. Use

Subtle surface Use #C3D8E6 for cards and hover fills. Tint 80

Avoid beside #132044 — 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 #133145 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: #133145;
  --color-base-rgb: 19 49 69;
  --color-base-oklch: oklch(30.1% 0.051 240.6);
  --color-50: #F3F8FC;
  --color-100: #DEEDF7;
  --color-200: #BFDBED;
  --color-300: #93BFDC;
  --color-400: #6AA2C8;
  --color-500: #4884AD;
  --color-600: #3D6884;
  --color-700: #304C5E;
  --color-800: #23333E;
  --color-900: #172026;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  prussian-blue: {
    50: '#F3F8FC',
    100: '#DEEDF7',
    200: '#BFDBED',
    300: '#93BFDC',
    400: '#6AA2C8',
    500: '#4884AD',
    600: '#3D6884',
    700: '#304C5E',
    800: '#23333E',
    900: '#172026',
  },
}

$base: #133145;
$base-ink: #FFFFFF;
$base-50: #F3F8FC;
$base-100: #DEEDF7;
$base-200: #BFDBED;
$base-300: #93BFDC;
$base-400: #6AA2C8;
$base-500: #4884AD;
$base-600: #3D6884;
$base-700: #304C5E;
$base-800: #23333E;
$base-900: #172026;
$base-hover: #0F2736;
$base-subtle: #A4C5DB;

{
    "color": {
        "base": {
            "value": "#133145",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F8FC",
                "type": "color"
            },
            "100": {
                "value": "#DEEDF7",
                "type": "color"
            },
            "200": {
                "value": "#BFDBED",
                "type": "color"
            },
            "300": {
                "value": "#93BFDC",
                "type": "color"
            },
            "400": {
                "value": "#6AA2C8",
                "type": "color"
            },
            "500": {
                "value": "#4884AD",
                "type": "color"
            },
            "600": {
                "value": "#3D6884",
                "type": "color"
            },
            "700": {
                "value": "#304C5E",
                "type": "color"
            },
            "800": {
                "value": "#23333E",
                "type": "color"
            },
            "900": {
                "value": "#172026",
                "type": "color"
            }
        }
    }
}