What color is #366363?

#366363 is a dark, muted cyan. In RGB it is rgb(54, 99, 99), and in HSL hsl(180, 29%, 30%).

Is #366363 accessible as text?

On white, #366363 has a contrast ratio of 6.73:1 (passes WCAG AA for body text); on black it is 3.12:1 (fails). For text placed on #366363, use white for the best readability.

What is the closest Tailwind color to #366363?

The nearest Tailwind CSS token is mist-600 (#4B585B).

What colors go well with #366363?

#366363 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #633636. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #366363 below.

Is #366363 good for buttons?

#366363 works well for buttons and highlights, but use white text on #366363 — black text only reaches 3.12:1, below the 4.5:1 needed for normal-size labels.

Is #366363 the same as CSS darkslategray?

No — #366363 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#366363 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #366363

Not just a swatch — here's how #366363 works with other colors. Named schemes with #366363 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #366363 Accent #A6C4BD Surface #E0DABE Secondary #9AA0A0 Anchor #1D3549

Feldgrau 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 #366363 Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A4 Anchor #2E3236

Feldgrau keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Vintage Leather Lead · 5 colors

Lead #366363 Secondary #725018 Surface #E4DCC0 Accent #3A5142 Anchor #552340

Feldgrau 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 #366363 Anchor #382C1E Surface #ECE4D0 Accent #809C72 Secondary #3A3933

Feldgrau 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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #366363 Secondary #778686 Support #979286 Ink #16140F

Feldgrau 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 Feldgrau carrying the quiet middle.

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Color Lab

How #366363 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 38/100

Cool

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

Softness 45/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 51/100

Moderate

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

Naturalness 9/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 44/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 56/100

Moderate

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

Brand distinctiveness 19/100

Very low

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

UI accent fit 67/100

High

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

Surface fit 39/100

Low

Usable as a tinted surface in measured doses.

Print safety 87/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #366363

For UI

For branding

For interior

For fashion

People also use #366363 with

Viridian Charcoal Garnet Platinum Dark Slate Gray

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 6.7:1. Use

Subtle surface Use #D4E3E3 for cards and hover fills. Tint 80

Avoid beside #365463 — 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 #366363 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: #366363;
  --color-base-rgb: 54 99 99;
  --color-base-oklch: oklch(46.8% 0.050 195.6);
  --color-50: #F5FAFA;
  --color-100: #E4F1F1;
  --color-200: #CAE2E2;
  --color-300: #A5CACA;
  --color-400: #81B1B1;
  --color-500: #619494;
  --color-600: #4F7373;
  --color-700: #3C5353;
  --color-800: #293737;
  --color-900: #1B2323;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  feldgrau: {
    50: '#F5FAFA',
    100: '#E4F1F1',
    200: '#CAE2E2',
    300: '#A5CACA',
    400: '#81B1B1',
    500: '#619494',
    600: '#4F7373',
    700: '#3C5353',
    800: '#293737',
    900: '#1B2323',
  },
}

$base: #366363;
$base-ink: #FFFFFF;
$base-50: #F5FAFA;
$base-100: #E4F1F1;
$base-200: #CAE2E2;
$base-300: #A5CACA;
$base-400: #81B1B1;
$base-500: #619494;
$base-600: #4F7373;
$base-700: #3C5353;
$base-800: #293737;
$base-900: #1B2323;
$base-hover: #2B4F4F;
$base-subtle: #BED5D5;

{
    "color": {
        "base": {
            "value": "#366363",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5FAFA",
                "type": "color"
            },
            "100": {
                "value": "#E4F1F1",
                "type": "color"
            },
            "200": {
                "value": "#CAE2E2",
                "type": "color"
            },
            "300": {
                "value": "#A5CACA",
                "type": "color"
            },
            "400": {
                "value": "#81B1B1",
                "type": "color"
            },
            "500": {
                "value": "#619494",
                "type": "color"
            },
            "600": {
                "value": "#4F7373",
                "type": "color"
            },
            "700": {
                "value": "#3C5353",
                "type": "color"
            },
            "800": {
                "value": "#293737",
                "type": "color"
            },
            "900": {
                "value": "#1B2323",
                "type": "color"
            }
        }
    }
}

Palettes built on #366363

Color Lab

Pairs with #366363

UI roles & guardrails

In real applications

Scales

Every model

Export