What color is #1C366D?

#1C366D is a dark blue. In RGB it is rgb(28, 54, 109), and in HSL hsl(221, 59%, 27%).

Is #1C366D accessible as text?

On white, #1C366D has a contrast ratio of 11.68:1 (passes WCAG AA for body text); on black it is 1.80:1 (fails). For text placed on #1C366D, use white for the best readability.

What is the closest Tailwind color to #1C366D?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #1C366D?

#1C366D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #6D541C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1C366D below.

Is #1C366D good for buttons?

#1C366D works well for buttons and highlights, but use white text on #1C366D — black text only reaches 1.80:1, below the 4.5:1 needed for normal-size labels.

Is #1C366D the same as CSS midnightblue?

No — #1C366D is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#1C366D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1C366D

Not just a swatch — here's how #1C366D works with other colors. Named schemes with #1C366D in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #1C366D Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Yale Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Luxury Packaging Feature · 5 colors

Feature #1C366D Anchor #141210 Accent #ACAE53 Secondary #242933 Surface #F0EEE3

Yale Blue carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Moody Editorial Color · 5 colors

Color #1C366D Anchor #2A2A2E Secondary #6E6E74 Surface #E9E7DA Accent #17163B

Yale Blue adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Yale Blue.

Vintage Leather Lead · 5 colors

Lead #1C366D Secondary #7F4536 Surface #EED7C2 Accent #375246 Anchor #57223A

Yale 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 #F8F4EF Accent #1C366D Secondary #555F74 Support #9D8F88 Ink #18140F

Yale 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 Yale Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #1C366D 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 25/100

Cool

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

Softness 31/100

Low

Firm and assertive — carries weight and contrast.

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 41/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 70/100

High

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

Brand distinctiveness 39/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 52/100

Moderate

Workable accent with care around contrast.

Surface fit 32/100

Low

Usable as a tinted surface in measured doses.

Print safety 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #1C366D

For UI

For branding

For interior

For fashion

People also use #1C366D with

Teal Midnight Blue Coffee 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 11.7:1. Use

Subtle surface Use #CAD4EA for cards and hover fills. Tint 80

Avoid beside #1E1C6D — 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 #1C366D 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: #1C366D;
  --color-base-rgb: 28 54 109;
  --color-base-oklch: oklch(34.5% 0.101 263.1);
  --color-50: #F2F6FC;
  --color-100: #DEE6F7;
  --color-200: #BECDEE;
  --color-300: #92AADE;
  --color-400: #6887CA;
  --color-500: #4667AE;
  --color-600: #3C5386;
  --color-700: #303F5F;
  --color-800: #222B3F;
  --color-900: #171C27;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F2F6FC',
    100: '#DEE6F7',
    200: '#BECDEE',
    300: '#92AADE',
    400: '#6887CA',
    500: '#4667AE',
    600: '#3C5386',
    700: '#303F5F',
    800: '#222B3F',
    900: '#171C27',
  },
}

$base: #1C366D;
$base-ink: #FFFFFF;
$base-50: #F2F6FC;
$base-100: #DEE6F7;
$base-200: #BECDEE;
$base-300: #92AADE;
$base-400: #6887CA;
$base-500: #4667AE;
$base-600: #3C5386;
$base-700: #303F5F;
$base-800: #222B3F;
$base-900: #171C27;
$base-hover: #172B58;
$base-subtle: #AEBEE0;

{
    "color": {
        "base": {
            "value": "#1C366D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F6FC",
                "type": "color"
            },
            "100": {
                "value": "#DEE6F7",
                "type": "color"
            },
            "200": {
                "value": "#BECDEE",
                "type": "color"
            },
            "300": {
                "value": "#92AADE",
                "type": "color"
            },
            "400": {
                "value": "#6887CA",
                "type": "color"
            },
            "500": {
                "value": "#4667AE",
                "type": "color"
            },
            "600": {
                "value": "#3C5386",
                "type": "color"
            },
            "700": {
                "value": "#303F5F",
                "type": "color"
            },
            "800": {
                "value": "#222B3F",
                "type": "color"
            },
            "900": {
                "value": "#171C27",
                "type": "color"
            }
        }
    }
}