What color is #0C4E64?

#0C4E64 is a dark, vivid cyan. In RGB it is rgb(12, 78, 100), and in HSL hsl(195, 79%, 22%).

Is #0C4E64 accessible as text?

On white, #0C4E64 has a contrast ratio of 9.17:1 (passes WCAG AA for body text); on black it is 2.29:1 (fails). For text placed on #0C4E64, use white for the best readability.

What is the closest Tailwind color to #0C4E64?

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

What colors go well with #0C4E64?

#0C4E64 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #64220C. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #0C4E64 below.

Is #0C4E64 good for buttons?

#0C4E64 works well for buttons and highlights, but use white text on #0C4E64 — black text only reaches 2.29:1, below the 4.5:1 needed for normal-size labels.

Is #0C4E64 the same as CSS darkslategray?

No — #0C4E64 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#0C4E64 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #0C4E64

Not just a swatch — here's how #0C4E64 works with other colors. Named schemes with #0C4E64 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #0C4E64 Accent #A6C4BF Surface #DEDABF Secondary #9AA0A0 Anchor #1E344A

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 #0C4E64 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 #0C4E64 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #3C7084

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 #0C4E64 Secondary #6F5116 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 #0C4E64 Secondary #5F7179 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 #0C4E64 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 29/100

Cool

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

Softness 37/100

Low

Middle-weight — neither delicate nor heavy.

Depth 59/100

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 42/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 63/100

High

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 60/100

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 81/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #0C4E64

For UI

For branding

For interior

For fashion

People also use #0C4E64 with

Sea Green Midnight Blue 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 9.2:1. Use

Subtle surface Use #C1E3EE for cards and hover fills. Tint 80

Avoid beside #0C3164 — 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 #0C4E64 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: #0C4E64;
  --color-base-rgb: 12 78 100;
  --color-base-oklch: oklch(39.6% 0.071 226.5);
  --color-50: #F1FBFE;
  --color-100: #DAF3FC;
  --color-200: #B6E6F6;
  --color-300: #85D1EB;
  --color-400: #58BADA;
  --color-500: #359DC0;
  --color-600: #307992;
  --color-700: #285767;
  --color-800: #1D3A43;
  --color-900: #142429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F1FBFE',
    100: '#DAF3FC',
    200: '#B6E6F6',
    300: '#85D1EB',
    400: '#58BADA',
    500: '#359DC0',
    600: '#307992',
    700: '#285767',
    800: '#1D3A43',
    900: '#142429',
  },
}

$base: #0C4E64;
$base-ink: #FFFFFF;
$base-50: #F1FBFE;
$base-100: #DAF3FC;
$base-200: #B6E6F6;
$base-300: #85D1EB;
$base-400: #58BADA;
$base-500: #359DC0;
$base-600: #307992;
$base-700: #285767;
$base-800: #1D3A43;
$base-900: #142429;
$base-hover: #093F50;
$base-subtle: #A0D5E7;

{
    "color": {
        "base": {
            "value": "#0C4E64",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1FBFE",
                "type": "color"
            },
            "100": {
                "value": "#DAF3FC",
                "type": "color"
            },
            "200": {
                "value": "#B6E6F6",
                "type": "color"
            },
            "300": {
                "value": "#85D1EB",
                "type": "color"
            },
            "400": {
                "value": "#58BADA",
                "type": "color"
            },
            "500": {
                "value": "#359DC0",
                "type": "color"
            },
            "600": {
                "value": "#307992",
                "type": "color"
            },
            "700": {
                "value": "#285767",
                "type": "color"
            },
            "800": {
                "value": "#1D3A43",
                "type": "color"
            },
            "900": {
                "value": "#142429",
                "type": "color"
            }
        }
    }
}