What color is #174E89?

#174E89 is a dark, vivid blue. In RGB it is rgb(23, 78, 137), and in HSL hsl(211, 71%, 31%).

Is #174E89 accessible as text?

On white, #174E89 has a contrast ratio of 8.44:1 (passes WCAG AA for body text); on black it is 2.49:1 (fails). For text placed on #174E89, use white for the best readability.

What is the closest Tailwind color to #174E89?

The nearest Tailwind CSS token is sky-800 (#00598A).

What colors go well with #174E89?

#174E89 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #875117. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #174E89 below.

Is #174E89 good for buttons?

#174E89 works well for buttons and highlights, but use white text on #174E89 — black text only reaches 2.49:1, below the 4.5:1 needed for normal-size labels.

Is #174E89 the same as CSS darkslateblue?

No — #174E89 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#174E89 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #174E89

Not just a swatch — here's how #174E89 works with other colors. Named schemes with #174E89 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #174E89 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Classic 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 #174E89 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4271A9

Classic 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 Classic Blue.

Vintage Leather Lead · 5 colors

Lead #174E89 Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57233B

Classic 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 #174E89 Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CB Secondary #322B2F

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

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #174E89 Secondary #65778C Support #9D8F89 Ink #16140F

Classic 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 Classic Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #174E89 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 19/100

Cool

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

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 58/100

Moderate

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 64/100

High

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

Brand distinctiveness 31/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 79/100

High

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

Surface fit 23/100

Low

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

Print safety 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #174E89

For UI

For branding

For interior

For fashion

People also use #174E89 with

Light Sea Green Phthalo Blue Saddle 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 8.4:1. Use

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

Avoid beside #172887 — 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 #174E89 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: #174E89;
  --color-base-rgb: 23 78 137;
  --color-base-oklch: oklch(42.2% 0.113 253.5);
  --color-50: #F1F7FD;
  --color-100: #DBEAFA;
  --color-200: #B9D5F3;
  --color-300: #8AB6E5;
  --color-400: #5E97D4;
  --color-500: #3C78B9;
  --color-600: #355F8D;
  --color-700: #2B4664;
  --color-800: #1F3042;
  --color-900: #151E28;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F1F7FD',
    100: '#DBEAFA',
    200: '#B9D5F3',
    300: '#8AB6E5',
    400: '#5E97D4',
    500: '#3C78B9',
    600: '#355F8D',
    700: '#2B4664',
    800: '#1F3042',
    900: '#151E28',
  },
}

$base: #174E89;
$base-ink: #FFFFFF;
$base-50: #F1F7FD;
$base-100: #DBEAFA;
$base-200: #B9D5F3;
$base-300: #8AB6E5;
$base-400: #5E97D4;
$base-500: #3C78B9;
$base-600: #355F8D;
$base-700: #2B4664;
$base-800: #1F3042;
$base-900: #151E28;
$base-hover: #123E6C;
$base-subtle: #AEC9E7;

{
    "color": {
        "base": {
            "value": "#174E89",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F7FD",
                "type": "color"
            },
            "100": {
                "value": "#DBEAFA",
                "type": "color"
            },
            "200": {
                "value": "#B9D5F3",
                "type": "color"
            },
            "300": {
                "value": "#8AB6E5",
                "type": "color"
            },
            "400": {
                "value": "#5E97D4",
                "type": "color"
            },
            "500": {
                "value": "#3C78B9",
                "type": "color"
            },
            "600": {
                "value": "#355F8D",
                "type": "color"
            },
            "700": {
                "value": "#2B4664",
                "type": "color"
            },
            "800": {
                "value": "#1F3042",
                "type": "color"
            },
            "900": {
                "value": "#151E28",
                "type": "color"
            }
        }
    }
}

Palettes built on #174E89

Color Lab

Pairs with #174E89

UI roles & guardrails

In real applications

Scales

Every model

Export