What color is #17409F?

#17409F is a dark, vivid blue. In RGB it is rgb(23, 64, 159), and in HSL hsl(222, 75%, 36%).

Is #17409F accessible as text?

On white, #17409F has a contrast ratio of 9.25:1 (passes WCAG AA for body text); on black it is 2.27:1 (fails). For text placed on #17409F, use white for the best readability.

What is the closest Tailwind color to #17409F?

The nearest Tailwind CSS token is blue-900 (#1C398E).

What colors go well with #17409F?

#17409F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A17717. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #17409F below.

Is #17409F good for buttons?

#17409F works well for buttons and highlights, but use white text on #17409F — black text only reaches 2.27:1, below the 4.5:1 needed for normal-size labels.

Is #17409F the same as CSS darkslateblue?

No — #17409F is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#17409F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #17409F

Not just a swatch — here's how #17409F works with other colors. Named schemes with #17409F in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #17409F Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

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

Tech Product Signal · 5 colors

Signal #17409F Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #3D66BE

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

Vintage Leather Lead · 5 colors

Lead #17409F Secondary #7F4536 Surface #EED7C2 Accent #375246 Anchor #57223A

Cobalt 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.

Berry & Cream Lead · 5 colors

Lead #17409F Surface #F6E5D8 Anchor #5B2144 Accent #E4C2CA Secondary #322B2F

Cobalt Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #17409F Secondary #607192 Support #9D8F88 Ink #18140F

Cobalt 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 Cobalt Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #17409F 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 10/100

Cool

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

Softness 30/100

Low

Firm and assertive — carries weight and contrast.

Depth 62/100

High

Mid depth — usable as an accent or a muted ground.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 30/100

Low

A faint retro warmth without tipping into sepia.

Luxury 62/100

High

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

Brand distinctiveness 44/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 76/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 14/100

Very low

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

Print safety 70/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #17409F

For UI

For branding

For interior

For fashion

People also use #17409F with

Verdigris Egyptian Blue Olive Brown 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 9.2:1. Use

Subtle surface Use #CDD7F0 for cards and hover fills. Tint 80

Avoid beside #1C17A1 — 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 #17409F 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: #17409F;
  --color-base-rgb: 23 64 159;
  --color-base-oklch: oklch(40.8% 0.161 263.3);
  --color-50: #F1F5FE;
  --color-100: #DAE4FB;
  --color-200: #B8CAF5;
  --color-300: #87A4E8;
  --color-400: #5B80D7;
  --color-500: #3860BC;
  --color-600: #324E90;
  --color-700: #293B66;
  --color-800: #1E2942;
  --color-900: #141B29;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  cobalt-blue: {
    50: '#F1F5FE',
    100: '#DAE4FB',
    200: '#B8CAF5',
    300: '#87A4E8',
    400: '#5B80D7',
    500: '#3860BC',
    600: '#324E90',
    700: '#293B66',
    800: '#1E2942',
    900: '#141B29',
  },
}

$base: #17409F;
$base-ink: #FFFFFF;
$base-50: #F1F5FE;
$base-100: #DAE4FB;
$base-200: #B8CAF5;
$base-300: #87A4E8;
$base-400: #5B80D7;
$base-500: #3860BC;
$base-600: #324E90;
$base-700: #293B66;
$base-800: #1E2942;
$base-900: #141B29;
$base-hover: #123381;
$base-subtle: #B2C3EA;

{
    "color": {
        "base": {
            "value": "#17409F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F5FE",
                "type": "color"
            },
            "100": {
                "value": "#DAE4FB",
                "type": "color"
            },
            "200": {
                "value": "#B8CAF5",
                "type": "color"
            },
            "300": {
                "value": "#87A4E8",
                "type": "color"
            },
            "400": {
                "value": "#5B80D7",
                "type": "color"
            },
            "500": {
                "value": "#3860BC",
                "type": "color"
            },
            "600": {
                "value": "#324E90",
                "type": "color"
            },
            "700": {
                "value": "#293B66",
                "type": "color"
            },
            "800": {
                "value": "#1E2942",
                "type": "color"
            },
            "900": {
                "value": "#141B29",
                "type": "color"
            }
        }
    }
}

Palettes built on #17409F

Color Lab

Pairs with #17409F

UI roles & guardrails

In real applications

Scales

Every model

Export