What color is #577F98?

#577F98 is a medium, muted cyan-blue. In RGB it is rgb(87, 127, 152), and in HSL hsl(203, 27%, 47%).

Is #577F98 accessible as text?

On white, #577F98 has a contrast ratio of 4.29:1 (fails WCAG AA for body text); on black it is 4.89:1 (passes). For text placed on #577F98, use black for the best readability.

What is the closest Tailwind color to #577F98?

The nearest Tailwind CSS token is mist-500 (#67787C).

What colors go well with #577F98?

#577F98 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #987057. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #577F98 below.

Is #577F98 good for buttons?

#577F98 works well for buttons and highlights, but use black text on #577F98 — white text only reaches 4.29:1, below the 4.5:1 needed for normal-size labels.

Is #577F98 the same as CSS slategray?

No — #577F98 is not the CSS named color slategray, but slategray (#708090) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#577F98 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #577F98

Not just a swatch — here's how #577F98 works with other colors. Named schemes with #577F98 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #577F98 Accent #A6C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Slate Gray 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 #577F98 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Slate Gray 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 #577F98 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #7EA3BB

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

Vintage Leather Lead · 5 colors

Lead #577F98 Secondary #6E5215 Surface #E2DDC0 Accent #385245 Anchor #57233C

Slate Gray 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 #F6F4EF Accent #577F98 Secondary #98A6AF Support #969386 Ink #16140F

Slate Gray 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 Slate Gray carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #577F98 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 33/100

Cool

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

Softness 54/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 41/100

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 48/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 47/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 23/100

Low

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

UI accent fit 73/100

High

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

Surface fit 42/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 85/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #577F98

For UI

For branding

For interior

For fashion

People also use #577F98 with

Verdigris Tanzanite Mocha Platinum Charcoal

UI roles & guardrails

Primary action Too mid-tone for a filled button — darken for the fill. AA Large

Body text Do not use for body copy on light surfaces. Avoid

Large display Fine for headings 24px+ on white. Pass

Background Pair with #141310 text at 4.3:1. Use

Subtle surface Use #DFE5E9 for cards and hover fills. Tint 80

Avoid beside #576A98 — 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 #577F98 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: #577F98;
  --color-base-rgb: 87 127 152;
  --color-base-oklch: oklch(57.7% 0.059 236.6);
  --color-50: #F5F8FA;
  --color-100: #E5ECF0;
  --color-200: #CBD9E1;
  --color-300: #A6BCC9;
  --color-400: #839EAF;
  --color-500: #638092;
  --color-600: #506572;
  --color-700: #3D4A52;
  --color-800: #2A3237;
  --color-900: #1B1F22;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  slate-gray: {
    50: '#F5F8FA',
    100: '#E5ECF0',
    200: '#CBD9E1',
    300: '#A6BCC9',
    400: '#839EAF',
    500: '#638092',
    600: '#506572',
    700: '#3D4A52',
    800: '#2A3237',
    900: '#1B1F22',
  },
}

$base: #577F98;
$base-ink: #141310;
$base-50: #F5F8FA;
$base-100: #E5ECF0;
$base-200: #CBD9E1;
$base-300: #A6BCC9;
$base-400: #839EAF;
$base-500: #638092;
$base-600: #506572;
$base-700: #3D4A52;
$base-800: #2A3237;
$base-900: #1B1F22;
$base-hover: #46667A;
$base-subtle: #CED8DF;

{
    "color": {
        "base": {
            "value": "#577F98",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F8FA",
                "type": "color"
            },
            "100": {
                "value": "#E5ECF0",
                "type": "color"
            },
            "200": {
                "value": "#CBD9E1",
                "type": "color"
            },
            "300": {
                "value": "#A6BCC9",
                "type": "color"
            },
            "400": {
                "value": "#839EAF",
                "type": "color"
            },
            "500": {
                "value": "#638092",
                "type": "color"
            },
            "600": {
                "value": "#506572",
                "type": "color"
            },
            "700": {
                "value": "#3D4A52",
                "type": "color"
            },
            "800": {
                "value": "#2A3237",
                "type": "color"
            },
            "900": {
                "value": "#1B1F22",
                "type": "color"
            }
        }
    }
}

Palettes built on #577F98

Color Lab

Pairs with #577F98

UI roles & guardrails

In real applications

Scales

Every model

Export