What color is #09535B?

#09535B is a dark, vivid cyan. In RGB it is rgb(9, 83, 91), and in HSL hsl(186, 82%, 20%).

Is #09535B accessible as text?

On white, #09535B has a contrast ratio of 8.75:1 (passes WCAG AA for body text); on black it is 2.40:1 (fails). For text placed on #09535B, use white for the best readability.

What is the closest Tailwind color to #09535B?

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

What colors go well with #09535B?

#09535B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5D1209. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #09535B below.

Is #09535B good for buttons?

#09535B works well for buttons and highlights, but use white text on #09535B — black text only reaches 2.40:1, below the 4.5:1 needed for normal-size labels.

Is #09535B the same as CSS darkslategray?

No — #09535B is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#09535B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #09535B

Not just a swatch — here's how #09535B works with other colors. Named schemes with #09535B in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #09535B Accent #A6C4BE Surface #DFDABE Secondary #9AA0A0 Anchor #1D3549

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 #09535B Secondary #AEB4B8 Surface #F1F2F0 Support #7A94A5 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 #09535B Surface #14161A Highlight #F4F6F8 Secondary #596671 Accent #3D747C

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 #09535B Secondary #715117 Surface #E3DCC0 Accent #395143 Anchor #56233F

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 #09535B Secondary #617477 Support #979286 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 #09535B 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 32/100

Cool

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

Softness 38/100

Low

Middle-weight — neither delicate nor heavy.

Depth 58/100

Moderate

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

Naturalness 5/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 42/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 62/100

High

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

Brand distinctiveness 26/100

Low

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

UI accent fit 61/100

High

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

Surface fit 38/100

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 #09535B

For UI

For branding

For interior

For fashion

People also use #09535B with

Sea Green Navy Rosewood Platinum Dark Slate Gray

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 8.8:1. Use

Subtle surface Use #BEE9EE for cards and hover fills. Tint 80

Avoid beside #09395D — 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 #09535B 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: #09535B;
  --color-base-rgb: 9 83 91;
  --color-base-oklch: oklch(40.5% 0.066 206.6);
  --color-50: #F0FDFE;
  --color-100: #D9F9FC;
  --color-200: #B5F1F8;
  --color-300: #83E2ED;
  --color-400: #55CFDD;
  --color-500: #32B4C3;
  --color-600: #2E8A94;
  --color-700: #266269;
  --color-800: #1D4044;
  --color-900: #14272A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F0FDFE',
    100: '#D9F9FC',
    200: '#B5F1F8',
    300: '#83E2ED',
    400: '#55CFDD',
    500: '#32B4C3',
    600: '#2E8A94',
    700: '#266269',
    800: '#1D4044',
    900: '#14272A',
  },
}

$base: #09535B;
$base-ink: #FFFFFF;
$base-50: #F0FDFE;
$base-100: #D9F9FC;
$base-200: #B5F1F8;
$base-300: #83E2ED;
$base-400: #55CFDD;
$base-500: #32B4C3;
$base-600: #2E8A94;
$base-700: #266269;
$base-800: #1D4044;
$base-900: #14272A;
$base-hover: #07444A;
$base-subtle: #9CE0E8;

{
    "color": {
        "base": {
            "value": "#09535B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FDFE",
                "type": "color"
            },
            "100": {
                "value": "#D9F9FC",
                "type": "color"
            },
            "200": {
                "value": "#B5F1F8",
                "type": "color"
            },
            "300": {
                "value": "#83E2ED",
                "type": "color"
            },
            "400": {
                "value": "#55CFDD",
                "type": "color"
            },
            "500": {
                "value": "#32B4C3",
                "type": "color"
            },
            "600": {
                "value": "#2E8A94",
                "type": "color"
            },
            "700": {
                "value": "#266269",
                "type": "color"
            },
            "800": {
                "value": "#1D4044",
                "type": "color"
            },
            "900": {
                "value": "#14272A",
                "type": "color"
            }
        }
    }
}