What color is #1E364C?

#1E364C is a dark blue. In RGB it is rgb(30, 54, 76), and in HSL hsl(209, 43%, 21%).

Is #1E364C accessible as text?

On white, #1E364C has a contrast ratio of 12.45:1 (passes WCAG AA for body text); on black it is 1.69:1 (fails). For text placed on #1E364C, use white for the best readability.

What is the closest Tailwind color to #1E364C?

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

What colors go well with #1E364C?

#1E364C pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4D351F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1E364C below.

Is #1E364C good for buttons?

#1E364C works well for buttons and highlights, but use white text on #1E364C — black text only reaches 1.69:1, below the 4.5:1 needed for normal-size labels.

Is #1E364C the same as CSS darkslategray?

No — #1E364C is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#1E364C Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1E364C

Not just a swatch — here's how #1E364C works with other colors. Named schemes with #1E364C in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #1E364C Accent #A5C4C0 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

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 #1E364C 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 #1E364C Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #40566B

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 #1E364C Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233B

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 #1E364C Secondary #525A63 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 #1E364C 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 36/100

Cool

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 65/100

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 32/100

Low

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

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

Brand distinctiveness 19/100

Very low

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

UI accent fit 34/100

Low

Workable accent with care around contrast.

Surface fit 49/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 89/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #1E364C

For UI

For branding

For interior

For fashion

People also use #1E364C with

Pine Green Russian Violet Espresso 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 12.4:1. Use

Subtle surface Use #CAD7E3 for cards and hover fills. Tint 80

Avoid beside #1F274D — 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 #1E364C 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: #1E364C;
  --color-base-rgb: 30 54 76;
  --color-base-oklch: oklch(32.4% 0.050 247.6);
  --color-50: #F4F7FB;
  --color-100: #E1EBF4;
  --color-200: #C5D7E8;
  --color-300: #9CB9D3;
  --color-400: #759ABD;
  --color-500: #557CA0;
  --color-600: #46627C;
  --color-700: #364859;
  --color-800: #26313B;
  --color-900: #191F24;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  prussian-blue: {
    50: '#F4F7FB',
    100: '#E1EBF4',
    200: '#C5D7E8',
    300: '#9CB9D3',
    400: '#759ABD',
    500: '#557CA0',
    600: '#46627C',
    700: '#364859',
    800: '#26313B',
    900: '#191F24',
  },
}

$base: #1E364C;
$base-ink: #FFFFFF;
$base-50: #F4F7FB;
$base-100: #E1EBF4;
$base-200: #C5D7E8;
$base-300: #9CB9D3;
$base-400: #759ABD;
$base-500: #557CA0;
$base-600: #46627C;
$base-700: #364859;
$base-800: #26313B;
$base-900: #191F24;
$base-hover: #182B3D;
$base-subtle: #AFC3D6;

{
    "color": {
        "base": {
            "value": "#1E364C",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F7FB",
                "type": "color"
            },
            "100": {
                "value": "#E1EBF4",
                "type": "color"
            },
            "200": {
                "value": "#C5D7E8",
                "type": "color"
            },
            "300": {
                "value": "#9CB9D3",
                "type": "color"
            },
            "400": {
                "value": "#759ABD",
                "type": "color"
            },
            "500": {
                "value": "#557CA0",
                "type": "color"
            },
            "600": {
                "value": "#46627C",
                "type": "color"
            },
            "700": {
                "value": "#364859",
                "type": "color"
            },
            "800": {
                "value": "#26313B",
                "type": "color"
            },
            "900": {
                "value": "#191F24",
                "type": "color"
            }
        }
    }
}