What color is #212D64?

#212D64 is a dark blue. In RGB it is rgb(33, 45, 100), and in HSL hsl(229, 50%, 26%).

Is #212D64 accessible as text?

On white, #212D64 has a contrast ratio of 12.93:1 (passes WCAG AA for body text); on black it is 1.62:1 (fails). For text placed on #212D64, use white for the best readability.

What is the closest Tailwind color to #212D64?

The nearest Tailwind CSS token is blue-950 (#162456).

What colors go well with #212D64?

#212D64 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #635721. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #212D64 below.

Is #212D64 good for buttons?

#212D64 works well for buttons and highlights, but use white text on #212D64 — black text only reaches 1.62:1, below the 4.5:1 needed for normal-size labels.

Is #212D64 the same as CSS midnightblue?

No — #212D64 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#212D64 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #212D64

Not just a swatch — here's how #212D64 works with other colors. Named schemes with #212D64 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #212D64 Accent #A5C4C2 Surface #EAD5C0 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 #212D64 Anchor #141210 Accent #DC9659 Secondary #252933 Surface #F3ECE3

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 #212D64 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #160E32

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 #212D64 Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #582239

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 #212D64 Secondary #51576C 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 #212D64 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 28/100

Cool

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

Softness 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 68/100

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 40/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 72/100

High

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

Brand distinctiveness 38/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 43/100

Moderate

Workable accent with care around contrast.

Surface fit 34/100

Low

Usable as a tinted surface in measured doses.

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #212D64

For UI

For branding

For interior

For fashion

People also use #212D64 with

Teal Blue Russian Violet Army Green Gainsboro Gunmetal Gray

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 12.9:1. Use

Subtle surface Use #CCD1E7 for cards and hover fills. Tint 80

Avoid beside #2B2163 — 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 #212D64 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: #212D64;
  --color-base-rgb: 33 45 100;
  --color-base-oklch: oklch(32.0% 0.098 270.7);
  --color-50: #F3F5FC;
  --color-100: #E0E4F5;
  --color-200: #C2C9EB;
  --color-300: #97A3D8;
  --color-400: #707FC2;
  --color-500: #4E5FA6;
  --color-600: #424D80;
  --color-700: #333B5C;
  --color-800: #24293C;
  --color-900: #181A25;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F3F5FC',
    100: '#E0E4F5',
    200: '#C2C9EB',
    300: '#97A3D8',
    400: '#707FC2',
    500: '#4E5FA6',
    600: '#424D80',
    700: '#333B5C',
    800: '#24293C',
    900: '#181A25',
  },
}

$base: #212D64;
$base-ink: #FFFFFF;
$base-50: #F3F5FC;
$base-100: #E0E4F5;
$base-200: #C2C9EB;
$base-300: #97A3D8;
$base-400: #707FC2;
$base-500: #4E5FA6;
$base-600: #424D80;
$base-700: #333B5C;
$base-800: #24293C;
$base-900: #181A25;
$base-hover: #1B2450;
$base-subtle: #B1B9DC;

{
    "color": {
        "base": {
            "value": "#212D64",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F5FC",
                "type": "color"
            },
            "100": {
                "value": "#E0E4F5",
                "type": "color"
            },
            "200": {
                "value": "#C2C9EB",
                "type": "color"
            },
            "300": {
                "value": "#97A3D8",
                "type": "color"
            },
            "400": {
                "value": "#707FC2",
                "type": "color"
            },
            "500": {
                "value": "#4E5FA6",
                "type": "color"
            },
            "600": {
                "value": "#424D80",
                "type": "color"
            },
            "700": {
                "value": "#333B5C",
                "type": "color"
            },
            "800": {
                "value": "#24293C",
                "type": "color"
            },
            "900": {
                "value": "#181A25",
                "type": "color"
            }
        }
    }
}