What color is #034D65?

#034D65 is a dark, vivid cyan. In RGB it is rgb(3, 77, 101), and in HSL hsl(195, 94%, 20%).

Is #034D65 accessible as text?

On white, #034D65 has a contrast ratio of 9.32:1 (passes WCAG AA for body text); on black it is 2.25:1 (fails). For text placed on #034D65, use white for the best readability.

What is the closest Tailwind color to #034D65?

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

What colors go well with #034D65?

#034D65 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #631B03. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #034D65 below.

Is #034D65 good for buttons?

#034D65 works well for buttons and highlights, but use white text on #034D65 — black text only reaches 2.25:1, below the 4.5:1 needed for normal-size labels.

Is #034D65 the same as CSS darkslategray?

No — #034D65 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#034D65 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #034D65

Not just a swatch — here's how #034D65 works with other colors. Named schemes with #034D65 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #034D65 Accent #A6C4BF 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 #034D65 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 #034D65 Surface #14161A Highlight #F4F6F8 Secondary #596672 Accent #396F85

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 #034D65 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 #034D65 Secondary #5D7079 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 #034D65 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 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 64/100

High

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

Brand distinctiveness 20/100

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 37/100

Low

Usable as a tinted surface in measured doses.

Print safety 80/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #034D65

For UI

For branding

For interior

For fashion

People also use #034D65 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 9.3:1. Use

Subtle surface Use #BBE4F2 for cards and hover fills. Tint 80

Avoid beside #032B63 — 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 #034D65 at work across the surfaces designers actually ship.

Website / UI

Northwind Sign up

Build faster.

A working theme, generated in seconds.

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: #034D65;
  --color-base-rgb: 3 77 101;
  --color-base-oklch: oklch(39.3% 0.075 227.7);
  --color-50: #F0FBFE;
  --color-100: #D8F4FD;
  --color-200: #B1E9FC;
  --color-300: #7BD6F4;
  --color-400: #4BC0E7;
  --color-500: #28A4CD;
  --color-600: #267E9B;
  --color-700: #215A6D;
  --color-800: #1A3C47;
  --color-900: #12252B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-gray: {
    50: '#F0FBFE',
    100: '#D8F4FD',
    200: '#B1E9FC',
    300: '#7BD6F4',
    400: '#4BC0E7',
    500: '#28A4CD',
    600: '#267E9B',
    700: '#215A6D',
    800: '#1A3C47',
    900: '#12252B',
  },
}

$base: #034D65;
$base-ink: #FFFFFF;
$base-50: #F0FBFE;
$base-100: #D8F4FD;
$base-200: #B1E9FC;
$base-300: #7BD6F4;
$base-400: #4BC0E7;
$base-500: #28A4CD;
$base-600: #267E9B;
$base-700: #215A6D;
$base-800: #1A3C47;
$base-900: #12252B;
$base-hover: #023C4F;
$base-subtle: #96D8EE;

{
    "color": {
        "base": {
            "value": "#034D65",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0FBFE",
                "type": "color"
            },
            "100": {
                "value": "#D8F4FD",
                "type": "color"
            },
            "200": {
                "value": "#B1E9FC",
                "type": "color"
            },
            "300": {
                "value": "#7BD6F4",
                "type": "color"
            },
            "400": {
                "value": "#4BC0E7",
                "type": "color"
            },
            "500": {
                "value": "#28A4CD",
                "type": "color"
            },
            "600": {
                "value": "#267E9B",
                "type": "color"
            },
            "700": {
                "value": "#215A6D",
                "type": "color"
            },
            "800": {
                "value": "#1A3C47",
                "type": "color"
            },
            "900": {
                "value": "#12252B",
                "type": "color"
            }
        }
    }
}