What color is #556366?

#556366 is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(85, 99, 102), and in HSL hsl(191, 9%, 37%).

Is #556366 accessible as text?

On white, #556366 has a contrast ratio of 6.24:1 (passes WCAG AA for body text); on black it is 3.36:1 (fails). For text placed on #556366, use white for the best readability.

What is the closest Tailwind color to #556366?

The nearest Tailwind CSS token is gray-600 (#4A5565).

What colors go well with #556366?

As a neutral, #556366 pairs cleanly with white, off-white and light grays for text, and sits under accent hues like blue, violet, emerald or warm orange — use it as a muted neutral, divider, icon or disabled-state color and let the accent carry the color.

Is #556366 the same as CSS dimgray?

No — #556366 is not the CSS named color dimgray, but dimgray (#696969) is the closest CSS named color.

#556366 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #556366

Not just a swatch — here's how #556366 works with other colors. Named schemes with #556366 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #556366 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #788688

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

Vintage Leather Lead · 5 colors

Lead #556366 Secondary #705117 Surface #E3DCC0 Accent #395143 Anchor #56233F

Ebony plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Modern Café Dominant · 5 colors

Dominant #556366 Anchor #372C1D Surface #EBE5D0 Accent #7E9D74 Secondary #3A3933

Ebony anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Japanese Sand Base · 5 colors

Base #556366 Surface #ECEADC Highlight #F4F2E7 Secondary #B4B19F Ink #2A2723

Ebony sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #556366 Secondary #858A8B Support #979286 Ink #16140F

Ebony 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 Ebony carrying the quiet middle.

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Color Lab

How #556366 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 45/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 51/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 48/100

Moderate

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

Naturalness 1/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 52/100

Moderate

Understated — leans refined without going austere.

Brand distinctiveness 7/100

Very low

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

UI accent fit 53/100

Moderate

Workable accent with care around contrast.

Surface fit 48/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 95/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #556366

For UI

For branding

For interior

For fashion

People also use #556366 with

Gray Iron Gray Wenge 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 6.2:1. Use

Subtle surface Use #DDE0E1 for cards and hover fills. Tint 80

Avoid beside #565E67 — 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 #556366 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: #556366;
  --color-base-rgb: 85 99 102;
  --color-base-oklch: oklch(48.9% 0.018 212.1);
  --color-50: #F7F8F8;
  --color-100: #E9ECED;
  --color-200: #D3D9DA;
  --color-300: #B2BBBD;
  --color-400: #929EA0;
  --color-500: #727F82;
  --color-600: #5B6467;
  --color-700: #444A4B;
  --color-800: #2E3233;
  --color-900: #1D1F20;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  ebony: {
    50: '#F7F8F8',
    100: '#E9ECED',
    200: '#D3D9DA',
    300: '#B2BBBD',
    400: '#929EA0',
    500: '#727F82',
    600: '#5B6467',
    700: '#444A4B',
    800: '#2E3233',
    900: '#1D1F20',
  },
}

$base: #556366;
$base-ink: #FFFFFF;
$base-50: #F7F8F8;
$base-100: #E9ECED;
$base-200: #D3D9DA;
$base-300: #B2BBBD;
$base-400: #929EA0;
$base-500: #727F82;
$base-600: #5B6467;
$base-700: #444A4B;
$base-800: #2E3233;
$base-900: #1D1F20;
$base-hover: #455052;
$base-subtle: #CCD1D2;

{
    "color": {
        "base": {
            "value": "#556366",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F7F8F8",
                "type": "color"
            },
            "100": {
                "value": "#E9ECED",
                "type": "color"
            },
            "200": {
                "value": "#D3D9DA",
                "type": "color"
            },
            "300": {
                "value": "#B2BBBD",
                "type": "color"
            },
            "400": {
                "value": "#929EA0",
                "type": "color"
            },
            "500": {
                "value": "#727F82",
                "type": "color"
            },
            "600": {
                "value": "#5B6467",
                "type": "color"
            },
            "700": {
                "value": "#444A4B",
                "type": "color"
            },
            "800": {
                "value": "#2E3233",
                "type": "color"
            },
            "900": {
                "value": "#1D1F20",
                "type": "color"
            }
        }
    }
}

Palettes built on #556366

Color Lab

Pairs with #556366

UI roles & guardrails

In real applications

Scales

Every model

Export