What color is #618594?

#618594 is a medium, muted cyan-blue. In RGB it is rgb(97, 133, 148), and in HSL hsl(198, 21%, 48%).

Is #618594 accessible as text?

On white, #618594 has a contrast ratio of 3.97:1 (fails WCAG AA for body text); on black it is 5.29:1 (passes). For text placed on #618594, use black for the best readability.

What is the closest Tailwind color to #618594?

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

What colors go well with #618594?

#618594 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #947061. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #618594 below.

Is #618594 good for buttons?

#618594 works well for buttons and highlights, but use black text on #618594 — white text only reaches 3.97:1, below the 4.5:1 needed for normal-size labels.

Is #618594 the same as CSS slategray?

No — #618594 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.

#618594 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #618594

Not just a swatch — here's how #618594 works with other colors. Named schemes with #618594 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #618594 Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1E344A

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 #618594 Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A5 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 #618594 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #88A9B7

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 #618594 Secondary #6F5116 Surface #E2DCC0 Accent #385244 Anchor #56233E

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 #618594 Secondary #9FACB1 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.

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Color Lab

How #618594 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 36/100

Cool

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

Softness 57/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 39/100

Low

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

Naturalness 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 45/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 18/100

Very low

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

UI accent fit 65/100

High

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

Surface fit 47/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #618594

For UI

For branding

For interior

For fashion

People also use #618594 with

Cadet Blue Very Peri Mocha Platinum Charcoal

UI roles & guardrails

Primary action Safe as a filled button with near-black label. AA

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 4.7:1. Use

Subtle surface Use #E0E6E8 for cards and hover fills. Tint 80

Avoid beside #617494 — 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 #618594 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: #618594;
  --color-base-rgb: 97 133 148;
  --color-base-oklch: oklch(59.5% 0.046 225.6);
  --color-50: #F6F8F9;
  --color-100: #E6ECEF;
  --color-200: #CEDADF;
  --color-300: #AABDC5;
  --color-400: #88A0AA;
  --color-500: #68828D;
  --color-600: #54666E;
  --color-700: #3F4B50;
  --color-800: #2B3235;
  --color-900: #1C2021;
  --color-on-base: #141310;
}

// tailwind.config.js
colors: {
  slate-gray: {
    50: '#F6F8F9',
    100: '#E6ECEF',
    200: '#CEDADF',
    300: '#AABDC5',
    400: '#88A0AA',
    500: '#68828D',
    600: '#54666E',
    700: '#3F4B50',
    800: '#2B3235',
    900: '#1C2021',
  },
}

$base: #618594;
$base-ink: #141310;
$base-50: #F6F8F9;
$base-100: #E6ECEF;
$base-200: #CEDADF;
$base-300: #AABDC5;
$base-400: #88A0AA;
$base-500: #68828D;
$base-600: #54666E;
$base-700: #3F4B50;
$base-800: #2B3235;
$base-900: #1C2021;
$base-hover: #4D6A76;
$base-subtle: #D1DADE;

{
    "color": {
        "base": {
            "value": "#618594",
            "type": "color"
        },
        "onBase": {
            "value": "#141310",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F8F9",
                "type": "color"
            },
            "100": {
                "value": "#E6ECEF",
                "type": "color"
            },
            "200": {
                "value": "#CEDADF",
                "type": "color"
            },
            "300": {
                "value": "#AABDC5",
                "type": "color"
            },
            "400": {
                "value": "#88A0AA",
                "type": "color"
            },
            "500": {
                "value": "#68828D",
                "type": "color"
            },
            "600": {
                "value": "#54666E",
                "type": "color"
            },
            "700": {
                "value": "#3F4B50",
                "type": "color"
            },
            "800": {
                "value": "#2B3235",
                "type": "color"
            },
            "900": {
                "value": "#1C2021",
                "type": "color"
            }
        }
    }
}

Palettes built on #618594

Color Lab

Pairs with #618594

UI roles & guardrails

In real applications

Scales

Every model

Export