What color is #20536B?

#20536B is a dark cyan-blue. In RGB it is rgb(32, 83, 107), and in HSL hsl(199, 54%, 27%).

Is #20536B accessible as text?

On white, #20536B has a contrast ratio of 8.36:1 (passes WCAG AA for body text); on black it is 2.51:1 (fails). For text placed on #20536B, use white for the best readability.

What is the closest Tailwind color to #20536B?

The nearest Tailwind CSS token is cyan-900 (#104E64).

What colors go well with #20536B?

#20536B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #6A3720. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #20536B below.

Is #20536B good for buttons?

#20536B works well for buttons and highlights, but use white text on #20536B — black text only reaches 2.51:1, below the 4.5:1 needed for normal-size labels.

Is #20536B the same as CSS darkslategray?

No — #20536B is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#20536B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #20536B

Not just a swatch — here's how #20536B works with other colors. Named schemes with #20536B in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #20536B Accent #A6C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Dark 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 #20536B Secondary #AEB4B8 Surface #F1F2F0 Support #7B93A6 Anchor #2E3236

Dark 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 #20536B Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #49758C

Dark 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 Dark Slate Gray.

Vintage Leather Lead · 5 colors

Lead #20536B Secondary #6F5216 Surface #E2DCC0 Accent #385244 Anchor #56233D

Dark 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 #20536B Secondary #677780 Support #969386 Ink #16140F

Dark 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 Dark Slate Gray carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #20536B 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 30/100

Cool

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

Softness 40/100

Low

Middle-weight — neither delicate nor heavy.

Depth 56/100

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 43/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 61/100

High

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

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 37/100

Low

Usable as a tinted surface in measured doses.

Print safety 83/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #20536B

For UI

For branding

For interior

For fashion

People also use #20536B with

Viridian Midnight Blue Garnet Platinum Charcoal

UI roles & guardrails

Primary action Safe as a filled button with white label. AAA

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 8.4:1. Use

Subtle surface Use #CBDFE8 for cards and hover fills. Tint 80

Avoid beside #203A6A — 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 #20536B 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: #20536B;
  --color-base-rgb: 32 83 107;
  --color-base-oklch: oklch(41.9% 0.067 231.9);
  --color-50: #F3F9FC;
  --color-100: #DFEFF6;
  --color-200: #C0DEEC;
  --color-300: #95C4DA;
  --color-400: #6CA9C6;
  --color-500: #4B8CAA;
  --color-600: #3F6D83;
  --color-700: #324F5D;
  --color-800: #23353D;
  --color-900: #172126;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F3F9FC',
    100: '#DFEFF6',
    200: '#C0DEEC',
    300: '#95C4DA',
    400: '#6CA9C6',
    500: '#4B8CAA',
    600: '#3F6D83',
    700: '#324F5D',
    800: '#23353D',
    900: '#172126',
  },
}

$base: #20536B;
$base-ink: #FFFFFF;
$base-50: #F3F9FC;
$base-100: #DFEFF6;
$base-200: #C0DEEC;
$base-300: #95C4DA;
$base-400: #6CA9C6;
$base-500: #4B8CAA;
$base-600: #3F6D83;
$base-700: #324F5D;
$base-800: #23353D;
$base-900: #172126;
$base-hover: #194255;
$base-subtle: #B0D0DE;

{
    "color": {
        "base": {
            "value": "#20536B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F9FC",
                "type": "color"
            },
            "100": {
                "value": "#DFEFF6",
                "type": "color"
            },
            "200": {
                "value": "#C0DEEC",
                "type": "color"
            },
            "300": {
                "value": "#95C4DA",
                "type": "color"
            },
            "400": {
                "value": "#6CA9C6",
                "type": "color"
            },
            "500": {
                "value": "#4B8CAA",
                "type": "color"
            },
            "600": {
                "value": "#3F6D83",
                "type": "color"
            },
            "700": {
                "value": "#324F5D",
                "type": "color"
            },
            "800": {
                "value": "#23353D",
                "type": "color"
            },
            "900": {
                "value": "#172126",
                "type": "color"
            }
        }
    }
}