What color is #183165?

#183165 is a dark blue. In RGB it is rgb(24, 49, 101), and in HSL hsl(221, 62%, 25%).

Is #183165 accessible as text?

On white, #183165 has a contrast ratio of 12.60:1 (passes WCAG AA for body text); on black it is 1.67:1 (fails). For text placed on #183165, use white for the best readability.

What is the closest Tailwind color to #183165?

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

What colors go well with #183165?

#183165 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #674E18. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #183165 below.

Is #183165 good for buttons?

#183165 works well for buttons and highlights, but use white text on #183165 — black text only reaches 1.67:1, below the 4.5:1 needed for normal-size labels.

Is #183165 the same as CSS midnightblue?

No — #183165 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#183165 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #183165

Not just a swatch — here's how #183165 works with other colors. Named schemes with #183165 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #183165 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 #183165 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 #183165 Anchor #2A2A2E Secondary #6E6E74 Surface #E9E7DA Accent #131135

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 #183165 Secondary #7F4536 Surface #E1DDC1 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 #183165 Secondary #4F5A6D 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 #183165 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 26/100

Cool

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

Softness 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 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 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 37/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 45/100

Moderate

Workable accent with care around contrast.

Surface fit 34/100

Low

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #183165

For UI

For branding

For interior

For fashion

People also use #183165 with

Teal Midnight Blue Sepia 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 12.6:1. Use

Subtle surface Use #C8D2EA for cards and hover fills. Tint 80

Avoid beside #1A1867 — 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 #183165 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: #183165;
  --color-base-rgb: 24 49 101;
  --color-base-oklch: oklch(32.5% 0.097 262.9);
  --color-50: #F2F5FD;
  --color-100: #DDE6F8;
  --color-200: #BDCDEF;
  --color-300: #90A9E0;
  --color-400: #6686CC;
  --color-500: #4466B1;
  --color-600: #3A5387;
  --color-700: #2E3E60;
  --color-800: #222B3F;
  --color-900: #161C27;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  yale-blue: {
    50: '#F2F5FD',
    100: '#DDE6F8',
    200: '#BDCDEF',
    300: '#90A9E0',
    400: '#6686CC',
    500: '#4466B1',
    600: '#3A5387',
    700: '#2E3E60',
    800: '#222B3F',
    900: '#161C27',
  },
}

$base: #183165;
$base-ink: #FFFFFF;
$base-50: #F2F5FD;
$base-100: #DDE6F8;
$base-200: #BDCDEF;
$base-300: #90A9E0;
$base-400: #6686CC;
$base-500: #4466B1;
$base-600: #3A5387;
$base-700: #2E3E60;
$base-800: #222B3F;
$base-900: #161C27;
$base-hover: #132753;
$base-subtle: #ABBCE1;

{
    "color": {
        "base": {
            "value": "#183165",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F5FD",
                "type": "color"
            },
            "100": {
                "value": "#DDE6F8",
                "type": "color"
            },
            "200": {
                "value": "#BDCDEF",
                "type": "color"
            },
            "300": {
                "value": "#90A9E0",
                "type": "color"
            },
            "400": {
                "value": "#6686CC",
                "type": "color"
            },
            "500": {
                "value": "#4466B1",
                "type": "color"
            },
            "600": {
                "value": "#3A5387",
                "type": "color"
            },
            "700": {
                "value": "#2E3E60",
                "type": "color"
            },
            "800": {
                "value": "#222B3F",
                "type": "color"
            },
            "900": {
                "value": "#161C27",
                "type": "color"
            }
        }
    }
}