What color is #175EA5?

#175EA5 is a dark, vivid blue. In RGB it is rgb(23, 94, 165), and in HSL hsl(210, 76%, 37%).

Is #175EA5 accessible as text?

On white, #175EA5 has a contrast ratio of 6.60:1 (passes WCAG AA for body text); on black it is 3.18:1 (fails). For text placed on #175EA5, use white for the best readability.

What is the closest Tailwind color to #175EA5?

The nearest Tailwind CSS token is sky-700 (#0069A8).

What colors go well with #175EA5?

#175EA5 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A65E17. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #175EA5 below.

Is #175EA5 good for buttons?

#175EA5 works well for buttons and highlights, but use white text on #175EA5 — black text only reaches 3.18:1, below the 4.5:1 needed for normal-size labels.

Is #175EA5 the same as CSS darkslateblue?

No — #175EA5 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#175EA5 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #175EA5

Not just a swatch — here's how #175EA5 works with other colors. Named schemes with #175EA5 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #175EA5 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Lapis Lazuli 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 #175EA5 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4883C5

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

Vintage Leather Lead · 5 colors

Lead #175EA5 Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57233B

Lapis Lazuli 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 #175EA5 Surface #EDE9D6 Anchor #5A2145 Accent #E4C2CB Secondary #322B2F

Lapis Lazuli 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 #175EA5 Secondary #7288A2 Support #959386 Ink #16140F

Lapis Lazuli 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 Lapis Lazuli carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #175EA5 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 14/100

Cool

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

Softness 38/100

Low

Middle-weight — neither delicate nor heavy.

Depth 53/100

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 42/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 58/100

Moderate

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

Brand distinctiveness 36/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 95/100

Very 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 72/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #175EA5

For UI

For branding

For interior

For fashion

People also use #175EA5 with

Robin Egg Blue Zaffre Sienna Gainsboro Charcoal

UI roles & guardrails

Primary action Safe as a filled button with white label. AA

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 6.6:1. Use

Subtle surface Use #CDDFF0 for cards and hover fills. Tint 80

Avoid beside #172FA6 — 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 #175EA5 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: #175EA5;
  --color-base-rgb: 23 94 165;
  --color-base-oklch: oklch(47.9% 0.132 252.8);
  --color-50: #F1F7FE;
  --color-100: #DAEBFB;
  --color-200: #B7D6F5;
  --color-300: #87B8E9;
  --color-400: #5A99D8;
  --color-500: #377ABD;
  --color-600: #326190;
  --color-700: #294766;
  --color-800: #1E3043;
  --color-900: #141F29;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  lapis-lazuli: {
    50: '#F1F7FE',
    100: '#DAEBFB',
    200: '#B7D6F5',
    300: '#87B8E9',
    400: '#5A99D8',
    500: '#377ABD',
    600: '#326190',
    700: '#294766',
    800: '#1E3043',
    900: '#141F29',
  },
}

$base: #175EA5;
$base-ink: #FFFFFF;
$base-50: #F1F7FE;
$base-100: #DAEBFB;
$base-200: #B7D6F5;
$base-300: #87B8E9;
$base-400: #5A99D8;
$base-500: #377ABD;
$base-600: #326190;
$base-700: #294766;
$base-800: #1E3043;
$base-900: #141F29;
$base-hover: #124B85;
$base-subtle: #B3CFEB;

{
    "color": {
        "base": {
            "value": "#175EA5",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F7FE",
                "type": "color"
            },
            "100": {
                "value": "#DAEBFB",
                "type": "color"
            },
            "200": {
                "value": "#B7D6F5",
                "type": "color"
            },
            "300": {
                "value": "#87B8E9",
                "type": "color"
            },
            "400": {
                "value": "#5A99D8",
                "type": "color"
            },
            "500": {
                "value": "#377ABD",
                "type": "color"
            },
            "600": {
                "value": "#326190",
                "type": "color"
            },
            "700": {
                "value": "#294766",
                "type": "color"
            },
            "800": {
                "value": "#1E3043",
                "type": "color"
            },
            "900": {
                "value": "#141F29",
                "type": "color"
            }
        }
    }
}

Palettes built on #175EA5

Color Lab

Pairs with #175EA5

UI roles & guardrails

In real applications

Scales

Every model

Export