What color is #2F4D64?

#2F4D64 is a dark cyan-blue. In RGB it is rgb(47, 77, 100), and in HSL hsl(206, 36%, 29%).

Is #2F4D64 accessible as text?

On white, #2F4D64 has a contrast ratio of 8.87:1 (passes WCAG AA for body text); on black it is 2.37:1 (fails). For text placed on #2F4D64, use white for the best readability.

What is the closest Tailwind color to #2F4D64?

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

What colors go well with #2F4D64?

#2F4D64 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #65462F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #2F4D64 below.

Is #2F4D64 good for buttons?

#2F4D64 works well for buttons and highlights, but use white text on #2F4D64 — black text only reaches 2.37:1, below the 4.5:1 needed for normal-size labels.

Is #2F4D64 the same as CSS darkslategray?

No — #2F4D64 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#2F4D64 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2F4D64

Not just a swatch — here's how #2F4D64 works with other colors. Named schemes with #2F4D64 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #2F4D64 Accent #A5C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

Charcoal 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 #2F4D64 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Charcoal 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 #2F4D64 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #536F85

Charcoal is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Charcoal.

Vintage Leather Lead · 5 colors

Lead #2F4D64 Secondary #7F4438 Surface #E2DDC0 Accent #375245 Anchor #57233C

Charcoal 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 #2F4D64 Secondary #68727B Support #969386 Ink #16140F

Charcoal 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 Charcoal carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #2F4D64 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 35/100

Cool

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

Softness 40/100

Low

Middle-weight — neither delicate nor heavy.

Depth 57/100

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 38/100

Low

A faint retro warmth without tipping into sepia.

Luxury 61/100

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 56/100

Moderate

Workable accent with care around contrast.

Surface fit 42/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #2F4D64

For UI

For branding

For interior

For fashion

People also use #2F4D64 with

Viridian Yale Blue Coffee Gainsboro 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 8.9:1. Use

Subtle surface Use #D1DCE4 for cards and hover fills. Tint 80

Avoid beside #2F3C65 — 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 #2F4D64 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: #2F4D64;
  --color-base-rgb: 47 77 100;
  --color-base-oklch: oklch(40.7% 0.053 242.7);
  --color-50: #F4F8FA;
  --color-100: #E3ECF2;
  --color-200: #C8D8E5;
  --color-300: #A0BBCF;
  --color-400: #7B9DB7;
  --color-500: #5B7F9A;
  --color-600: #4A6477;
  --color-700: #394956;
  --color-800: #283239;
  --color-900: #1A1F23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  charcoal: {
    50: '#F4F8FA',
    100: '#E3ECF2',
    200: '#C8D8E5',
    300: '#A0BBCF',
    400: '#7B9DB7',
    500: '#5B7F9A',
    600: '#4A6477',
    700: '#394956',
    800: '#283239',
    900: '#1A1F23',
  },
}

$base: #2F4D64;
$base-ink: #FFFFFF;
$base-50: #F4F8FA;
$base-100: #E3ECF2;
$base-200: #C8D8E5;
$base-300: #A0BBCF;
$base-400: #7B9DB7;
$base-500: #5B7F9A;
$base-600: #4A6477;
$base-700: #394956;
$base-800: #283239;
$base-900: #1A1F23;
$base-hover: #263E50;
$base-subtle: #BACBD8;

{
    "color": {
        "base": {
            "value": "#2F4D64",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F8FA",
                "type": "color"
            },
            "100": {
                "value": "#E3ECF2",
                "type": "color"
            },
            "200": {
                "value": "#C8D8E5",
                "type": "color"
            },
            "300": {
                "value": "#A0BBCF",
                "type": "color"
            },
            "400": {
                "value": "#7B9DB7",
                "type": "color"
            },
            "500": {
                "value": "#5B7F9A",
                "type": "color"
            },
            "600": {
                "value": "#4A6477",
                "type": "color"
            },
            "700": {
                "value": "#394956",
                "type": "color"
            },
            "800": {
                "value": "#283239",
                "type": "color"
            },
            "900": {
                "value": "#1A1F23",
                "type": "color"
            }
        }
    }
}

Palettes built on #2F4D64

Color Lab

Pairs with #2F4D64

UI roles & guardrails

In real applications

Scales

Every model

Export