What color is #366686?

#366686 is a dark cyan-blue. In RGB it is rgb(54, 102, 134), and in HSL hsl(204, 43%, 37%).

Is #366686 accessible as text?

On white, #366686 has a contrast ratio of 6.17:1 (passes WCAG AA for body text); on black it is 3.40:1 (fails). For text placed on #366686, use white for the best readability.

What is the closest Tailwind color to #366686?

The nearest Tailwind CSS token is cyan-800 (#005F78).

What colors go well with #366686?

#366686 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #875636. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #366686 below.

Is #366686 good for buttons?

#366686 works well for buttons and highlights, but use white text on #366686 — black text only reaches 3.40:1, below the 4.5:1 needed for normal-size labels.

Is #366686 the same as CSS dimgray?

No — #366686 is not the CSS named color dimgray, but dimgray (#696969) 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.

#366686 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #366686

Not just a swatch — here's how #366686 works with other colors. Named schemes with #366686 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #366686 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.

Nordic Calm Accent · 5 colors

Accent #366686 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Lapis Lazuli 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 #366686 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #5E89A7

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 #366686 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.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #366686 Secondary #7C8C98 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 #366686 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 28/100

Cool

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

Softness 45/100

Moderate

Middle-weight — neither delicate nor heavy.

Depth 50/100

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 50/100

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 20/100

Very low

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

UI accent fit 81/100

Very high

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

Surface fit 31/100

Low

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #366686

For UI

For branding

For interior

For fashion

People also use #366686 with

Persian Green Dark Slate Blue Raw Umber 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 #D5E1E9 for cards and hover fills. Tint 80

Avoid beside #364B87 — 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 #366686 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: #366686;
  --color-base-rgb: 54 102 134;
  --color-base-oklch: oklch(49.1% 0.073 239.8);
  --color-50: #F4F8FB;
  --color-100: #E1ECF4;
  --color-200: #C5DAE8;
  --color-300: #9CBDD3;
  --color-400: #75A0BD;
  --color-500: #5582A0;
  --color-600: #46667C;
  --color-700: #364B59;
  --color-800: #26333B;
  --color-900: #192024;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  lapis-lazuli: {
    50: '#F4F8FB',
    100: '#E1ECF4',
    200: '#C5DAE8',
    300: '#9CBDD3',
    400: '#75A0BD',
    500: '#5582A0',
    600: '#46667C',
    700: '#364B59',
    800: '#26333B',
    900: '#192024',
  },
}

$base: #366686;
$base-ink: #FFFFFF;
$base-50: #F4F8FB;
$base-100: #E1ECF4;
$base-200: #C5DAE8;
$base-300: #9CBDD3;
$base-400: #75A0BD;
$base-500: #5582A0;
$base-600: #46667C;
$base-700: #364B59;
$base-800: #26333B;
$base-900: #192024;
$base-hover: #2B526C;
$base-subtle: #BFD2DF;

{
    "color": {
        "base": {
            "value": "#366686",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F8FB",
                "type": "color"
            },
            "100": {
                "value": "#E1ECF4",
                "type": "color"
            },
            "200": {
                "value": "#C5DAE8",
                "type": "color"
            },
            "300": {
                "value": "#9CBDD3",
                "type": "color"
            },
            "400": {
                "value": "#75A0BD",
                "type": "color"
            },
            "500": {
                "value": "#5582A0",
                "type": "color"
            },
            "600": {
                "value": "#46667C",
                "type": "color"
            },
            "700": {
                "value": "#364B59",
                "type": "color"
            },
            "800": {
                "value": "#26333B",
                "type": "color"
            },
            "900": {
                "value": "#192024",
                "type": "color"
            }
        }
    }
}

Palettes built on #366686

Color Lab

Pairs with #366686

UI roles & guardrails

In real applications

Scales

Every model

Export