What color is #09173B?

#09173B is a very dark, vivid blue. In RGB it is rgb(9, 23, 59), and in HSL hsl(223, 74%, 13%).

Is #09173B accessible as text?

On white, #09173B has a contrast ratio of 17.54:1 (passes WCAG AA for body text); on black it is 1.20:1 (fails). For text placed on #09173B, use white for the best readability.

What is the closest Tailwind color to #09173B?

The nearest Tailwind CSS token is indigo-950 (#1E1A4D).

What colors go well with #09173B?

#09173B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #3A2C09. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #09173B below.

Is #09173B good for buttons?

#09173B works well for buttons and highlights, but use white text on #09173B — black text only reaches 1.20:1, below the 4.5:1 needed for normal-size labels.

Is #09173B the same as CSS midnightblue?

No — #09173B is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#09173B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #09173B

Not just a swatch — here's how #09173B works with other colors. Named schemes with #09173B in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #09173B Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Navy 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 #09173B Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A7 Anchor #2E3236

Navy 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 #09173B Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #273659

Navy is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Navy.

Vintage Leather Lead · 5 colors

Lead #09173B Secondary #7F4536 Surface #EED7C2 Accent #365246 Anchor #58223A

Navy 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 #09173B Secondary #363D4A Support #9D8F88 Ink #18140F

Navy 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 Navy carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #09173B 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 32/100

Cool

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

Softness 22/100

Low

Firm and assertive — carries weight and contrast.

Depth 76/100

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 29/100

Low

A faint retro warmth without tipping into sepia.

Luxury 78/100

High

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

Brand distinctiveness 28/100

Low

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

UI accent fit 15/100

Very low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 49/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 87/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #09173B

For UI

For branding

For interior

For fashion

People also use #09173B with

Dark Slate Gray Deep Purple Bistre 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 17.5:1. Use

Subtle surface Use #BBC8EA for cards and hover fills. Tint 80

Avoid beside #0B093A — 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 #09173B at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #09173B;
  --color-base-rgb: 9 23 59;
  --color-base-oklch: oklch(21.8% 0.072 264.9);
  --color-50: #F1F5FE;
  --color-100: #DBE4FB;
  --color-200: #B8C9F4;
  --color-300: #88A3E7;
  --color-400: #5C7ED6;
  --color-500: #395EBC;
  --color-600: #334D8F;
  --color-700: #2A3A65;
  --color-800: #1F2942;
  --color-900: #151A29;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  navy: {
    50: '#F1F5FE',
    100: '#DBE4FB',
    200: '#B8C9F4',
    300: '#88A3E7',
    400: '#5C7ED6',
    500: '#395EBC',
    600: '#334D8F',
    700: '#2A3A65',
    800: '#1F2942',
    900: '#151A29',
  },
}

$base: #09173B;
$base-ink: #FFFFFF;
$base-50: #F1F5FE;
$base-100: #DBE4FB;
$base-200: #B8C9F4;
$base-300: #88A3E7;
$base-400: #5C7ED6;
$base-500: #395EBC;
$base-600: #334D8F;
$base-700: #2A3A65;
$base-800: #1F2942;
$base-900: #151A29;
$base-hover: #07122E;
$base-subtle: #97ACE2;

{
    "color": {
        "base": {
            "value": "#09173B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F5FE",
                "type": "color"
            },
            "100": {
                "value": "#DBE4FB",
                "type": "color"
            },
            "200": {
                "value": "#B8C9F4",
                "type": "color"
            },
            "300": {
                "value": "#88A3E7",
                "type": "color"
            },
            "400": {
                "value": "#5C7ED6",
                "type": "color"
            },
            "500": {
                "value": "#395EBC",
                "type": "color"
            },
            "600": {
                "value": "#334D8F",
                "type": "color"
            },
            "700": {
                "value": "#2A3A65",
                "type": "color"
            },
            "800": {
                "value": "#1F2942",
                "type": "color"
            },
            "900": {
                "value": "#151A29",
                "type": "color"
            }
        }
    }
}