What color is #175F88?

#175F88 is a dark, vivid cyan-blue. In RGB it is rgb(23, 95, 136), and in HSL hsl(202, 71%, 31%).

Is #175F88 accessible as text?

On white, #175F88 has a contrast ratio of 6.93:1 (passes WCAG AA for body text); on black it is 3.03:1 (fails). For text placed on #175F88, use white for the best readability.

What is the closest Tailwind color to #175F88?

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

What colors go well with #175F88?

#175F88 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #874017. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #175F88 below.

Is #175F88 good for buttons?

#175F88 works well for buttons and highlights, but use white text on #175F88 — black text only reaches 3.03:1, below the 4.5:1 needed for normal-size labels.

Is #175F88 the same as CSS darkslategray?

No — #175F88 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#175F88 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #175F88

Not just a swatch — here's how #175F88 works with other colors. Named schemes with #175F88 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #175F88 Accent #A5C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

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 #175F88 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4882A9

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 #175F88 Secondary #7F4439 Surface #E2DDC0 Accent #385245 Anchor #57233C

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 #175F88 Surface #EEE9D6 Anchor #592246 Accent #E4C2CC Secondary #322B30

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 #175F88 Secondary #708493 Support #969386 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 #175F88 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 22/100

Cool

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

Softness 40/100

Moderate

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 51/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 60/100

Moderate

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

Brand distinctiveness 26/100

Low

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

UI accent fit 85/100

Very high

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

Surface fit 26/100

Low

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

Print safety 77/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #175F88

For UI

For branding

For interior

For fashion

People also use #175F88 with

Jungle Green Phthalo Blue Russet Platinum 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 6.9:1. Use

Subtle surface Use #CAE1EE for cards and hover fills. Tint 80

Avoid beside #173987 — 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 #175F88 at work across the surfaces designers actually ship.

Website / UI

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Build faster.

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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: #175F88;
  --color-base-rgb: 23 95 136;
  --color-base-oklch: oklch(46.3% 0.095 239.5);
  --color-50: #F1F9FD;
  --color-100: #DBEFFA;
  --color-200: #B9DEF3;
  --color-300: #8AC4E5;
  --color-400: #5EA9D4;
  --color-500: #3C8BB9;
  --color-600: #356D8D;
  --color-700: #2B4F64;
  --color-800: #1F3542;
  --color-900: #152128;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  lapis-lazuli: {
    50: '#F1F9FD',
    100: '#DBEFFA',
    200: '#B9DEF3',
    300: '#8AC4E5',
    400: '#5EA9D4',
    500: '#3C8BB9',
    600: '#356D8D',
    700: '#2B4F64',
    800: '#1F3542',
    900: '#152128',
  },
}

$base: #175F88;
$base-ink: #FFFFFF;
$base-50: #F1F9FD;
$base-100: #DBEFFA;
$base-200: #B9DEF3;
$base-300: #8AC4E5;
$base-400: #5EA9D4;
$base-500: #3C8BB9;
$base-600: #356D8D;
$base-700: #2B4F64;
$base-800: #1F3542;
$base-900: #152128;
$base-hover: #124B6C;
$base-subtle: #AED2E7;

{
    "color": {
        "base": {
            "value": "#175F88",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F9FD",
                "type": "color"
            },
            "100": {
                "value": "#DBEFFA",
                "type": "color"
            },
            "200": {
                "value": "#B9DEF3",
                "type": "color"
            },
            "300": {
                "value": "#8AC4E5",
                "type": "color"
            },
            "400": {
                "value": "#5EA9D4",
                "type": "color"
            },
            "500": {
                "value": "#3C8BB9",
                "type": "color"
            },
            "600": {
                "value": "#356D8D",
                "type": "color"
            },
            "700": {
                "value": "#2B4F64",
                "type": "color"
            },
            "800": {
                "value": "#1F3542",
                "type": "color"
            },
            "900": {
                "value": "#152128",
                "type": "color"
            }
        }
    }
}

Palettes built on #175F88

Color Lab

Pairs with #175F88

UI roles & guardrails

In real applications

Scales

Every model

Export