What color is #284367?

#284367 is a dark blue. In RGB it is rgb(40, 67, 103), and in HSL hsl(214, 44%, 28%).

Is #284367 accessible as text?

On white, #284367 has a contrast ratio of 10.05:1 (passes WCAG AA for body text); on black it is 2.09:1 (fails). For text placed on #284367, use white for the best readability.

What is the closest Tailwind color to #284367?

The nearest Tailwind CSS token is sky-900 (#024A70).

What colors go well with #284367?

#284367 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #674C28. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #284367 below.

Is #284367 good for buttons?

#284367 works well for buttons and highlights, but use white text on #284367 — black text only reaches 2.09:1, below the 4.5:1 needed for normal-size labels.

Is #284367 the same as CSS darkslategray?

No — #284367 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#284367 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #284367

Not just a swatch — here's how #284367 works with other colors. Named schemes with #284367 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #284367 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

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 #284367 Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A6 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 #284367 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #4B6587

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 #284367 Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57233B

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 #284367 Secondary #606A77 Support #9D8F89 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 #284367 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 31/100

Cool

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

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 60/100

High

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

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 42/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 65/100

High

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

Brand distinctiveness 27/100

Low

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

UI accent fit 55/100

Moderate

Workable accent with care around contrast.

Surface fit 39/100

Low

Usable as a tinted surface in measured doses.

Print safety 86/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #284367

For UI

For branding

For interior

For fashion

People also use #284367 with

Teal Green 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 10.1:1. Use

Subtle surface Use #CFD9E6 for cards and hover fills. Tint 80

Avoid beside #282E67 — 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 #284367 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: #284367;
  --color-base-rgb: 40 67 103;
  --color-base-oklch: oklch(37.9% 0.070 256.0);
  --color-50: #F4F7FB;
  --color-100: #E1E9F4;
  --color-200: #C4D4E8;
  --color-300: #9BB4D4;
  --color-400: #7594BD;
  --color-500: #5475A1;
  --color-600: #465D7C;
  --color-700: #364559;
  --color-800: #262F3B;
  --color-900: #191E25;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  charcoal: {
    50: '#F4F7FB',
    100: '#E1E9F4',
    200: '#C4D4E8',
    300: '#9BB4D4',
    400: '#7594BD',
    500: '#5475A1',
    600: '#465D7C',
    700: '#364559',
    800: '#262F3B',
    900: '#191E25',
  },
}

$base: #284367;
$base-ink: #FFFFFF;
$base-50: #F4F7FB;
$base-100: #E1E9F4;
$base-200: #C4D4E8;
$base-300: #9BB4D4;
$base-400: #7594BD;
$base-500: #5475A1;
$base-600: #465D7C;
$base-700: #364559;
$base-800: #262F3B;
$base-900: #191E25;
$base-hover: #203652;
$base-subtle: #B6C5DA;

{
    "color": {
        "base": {
            "value": "#284367",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F7FB",
                "type": "color"
            },
            "100": {
                "value": "#E1E9F4",
                "type": "color"
            },
            "200": {
                "value": "#C4D4E8",
                "type": "color"
            },
            "300": {
                "value": "#9BB4D4",
                "type": "color"
            },
            "400": {
                "value": "#7594BD",
                "type": "color"
            },
            "500": {
                "value": "#5475A1",
                "type": "color"
            },
            "600": {
                "value": "#465D7C",
                "type": "color"
            },
            "700": {
                "value": "#364559",
                "type": "color"
            },
            "800": {
                "value": "#262F3B",
                "type": "color"
            },
            "900": {
                "value": "#191E25",
                "type": "color"
            }
        }
    }
}