What color is #223171?

#223171 is a dark blue. In RGB it is rgb(34, 49, 113), and in HSL hsl(229, 54%, 29%).

Is #223171 accessible as text?

On white, #223171 has a contrast ratio of 12.03:1 (passes WCAG AA for body text); on black it is 1.75:1 (fails). For text placed on #223171, use white for the best readability.

What is the closest Tailwind color to #223171?

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

What colors go well with #223171?

#223171 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #726322. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #223171 below.

Is #223171 good for buttons?

#223171 works well for buttons and highlights, but use white text on #223171 — black text only reaches 1.75:1, below the 4.5:1 needed for normal-size labels.

Is #223171 the same as CSS midnightblue?

No — #223171 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#223171 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #223171

Not just a swatch — here's how #223171 works with other colors. Named schemes with #223171 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #223171 Anchor #141210 Accent #DC9659 Secondary #252933 Surface #F4ECE3

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 #223171 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #1A113C

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.

Coastal Morning Lead · 5 colors

Lead #223171 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.

Vintage Leather Lead · 5 colors

Lead #223171 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 #223171 Secondary #555D74 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.

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Color Lab

How #223171 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 24/100

Cool

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

Softness 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 66/100

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 39/100

Low

A faint retro warmth without tipping into sepia.

Luxury 72/100

High

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

Brand distinctiveness 43/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 52/100

Moderate

Workable accent with care around contrast.

Surface fit 29/100

Low

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

Print safety 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #223171

For UI

For branding

For interior

For fashion

People also use #223171 with

Teal Blue Indigo Dark Olive 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 12.0:1. Use

Subtle surface Use #CDD2E9 for cards and hover fills. Tint 80

Avoid beside #2E2272 — 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 #223171 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: #223171;
  --color-base-rgb: 34 49 113;
  --color-base-oklch: oklch(34.0% 0.112 269.6);
  --color-50: #F3F4FC;
  --color-100: #DFE3F6;
  --color-200: #C0C8EC;
  --color-300: #95A2DA;
  --color-400: #6C7DC6;
  --color-500: #4B5CAA;
  --color-600: #3F4C83;
  --color-700: #323A5D;
  --color-800: #23283D;
  --color-900: #171A26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F3F4FC',
    100: '#DFE3F6',
    200: '#C0C8EC',
    300: '#95A2DA',
    400: '#6C7DC6',
    500: '#4B5CAA',
    600: '#3F4C83',
    700: '#323A5D',
    800: '#23283D',
    900: '#171A26',
  },
}

$base: #223171;
$base-ink: #FFFFFF;
$base-50: #F3F4FC;
$base-100: #DFE3F6;
$base-200: #C0C8EC;
$base-300: #95A2DA;
$base-400: #6C7DC6;
$base-500: #4B5CAA;
$base-600: #3F4C83;
$base-700: #323A5D;
$base-800: #23283D;
$base-900: #171A26;
$base-hover: #1B275B;
$base-subtle: #B2BBDF;

{
    "color": {
        "base": {
            "value": "#223171",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F4FC",
                "type": "color"
            },
            "100": {
                "value": "#DFE3F6",
                "type": "color"
            },
            "200": {
                "value": "#C0C8EC",
                "type": "color"
            },
            "300": {
                "value": "#95A2DA",
                "type": "color"
            },
            "400": {
                "value": "#6C7DC6",
                "type": "color"
            },
            "500": {
                "value": "#4B5CAA",
                "type": "color"
            },
            "600": {
                "value": "#3F4C83",
                "type": "color"
            },
            "700": {
                "value": "#323A5D",
                "type": "color"
            },
            "800": {
                "value": "#23283D",
                "type": "color"
            },
            "900": {
                "value": "#171A26",
                "type": "color"
            }
        }
    }
}