What color is #284136?

#284136 is a dark low-chroma cool gray with a subtle cool cast. In RGB it is rgb(40, 65, 54), and in HSL hsl(154, 24%, 21%).

Is #284136 accessible as text?

On white, #284136 has a contrast ratio of 11.05:1 (passes WCAG AA for body text); on black it is 1.90:1 (fails). For text placed on #284136, use white for the best readability.

What is the closest Tailwind color to #284136?

The nearest Tailwind CSS token is neutral-700 (#404040).

What colors go well with #284136?

As a neutral, #284136 pairs cleanly with white, off-white and light grays for text, and sits under accent hues like blue, violet, emerald or warm orange — use it as a dark surface or high-contrast base and let the accent carry the color.

Is #284136 the same as CSS darkslategray?

No — #284136 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#284136 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #284136

Not just a swatch — here's how #284136 works with other colors. Named schemes with #284136 in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #284136 Secondary #744F1A Surface #E5DBC0 Accent #3B5141 Anchor #5B2320

Onyx plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Japanese Sand Base · 5 colors

Base #284136 Surface #EDEADC Highlight #F5F1E7 Secondary #B6B09F Ink #2A2723

Onyx sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Luxury Packaging Feature · 5 colors

Feature #284136 Anchor #141210 Accent #BDA84C Secondary #202C26 Surface #F1EDE3

Onyx carries the depth in this luxury scheme, offset by a brass accent and near-black and held together by a deep neutral and an off-white surface.

Moody Editorial Color · 5 colors

Color #284136 Anchor #292A2E Secondary #6C6F74 Surface #EBE6DA Accent #0E211E

Onyx adds the colour to this moody editorial scheme — charcoal and a mid-grey around it, a bone highlight, and a muted jewel accent drawn from Onyx.

Minimal Editorial Surface · 5 colors

Surface #F7F4EF Accent #284136 Secondary #5A635F Support #989286 Ink #17140F

Onyx 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 Onyx carrying the quiet middle.

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Color Lab

How #284136 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 45/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 36/100

Low

Middle-weight — neither delicate nor heavy.

Depth 61/100

High

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

Naturalness 32/100

Low

Loosely natural — an earthy edge without being rustic.

Vintage feel 36/100

Low

A faint retro warmth without tipping into sepia.

Luxury 64/100

High

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

Brand distinctiveness 14/100

Very low

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

UI accent fit 37/100

Low

Workable accent with care around contrast.

Surface fit 51/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 93/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #284136

For UI

For branding

For interior

For fashion

People also use #284136 with

Hunter Green Onyx Bistre 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 11.1:1. Use

Subtle surface Use #D0DED8 for cards and hover fills. Tint 80

Avoid beside #294240 — 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 #284136 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: #284136;
  --color-base-rgb: 40 65 54;
  --color-base-oklch: oklch(35.1% 0.037 165.0);
  --color-50: #F5F9F8;
  --color-100: #E5F0EB;
  --color-200: #CCE0D8;
  --color-300: #A8C7BA;
  --color-400: #85AD9C;
  --color-500: #65907D;
  --color-600: #527063;
  --color-700: #3E5149;
  --color-800: #2B3631;
  --color-900: #1B221F;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F5F9F8',
    100: '#E5F0EB',
    200: '#CCE0D8',
    300: '#A8C7BA',
    400: '#85AD9C',
    500: '#65907D',
    600: '#527063',
    700: '#3E5149',
    800: '#2B3631',
    900: '#1B221F',
  },
}

$base: #284136;
$base-ink: #FFFFFF;
$base-50: #F5F9F8;
$base-100: #E5F0EB;
$base-200: #CCE0D8;
$base-300: #A8C7BA;
$base-400: #85AD9C;
$base-500: #65907D;
$base-600: #527063;
$base-700: #3E5149;
$base-800: #2B3631;
$base-900: #1B221F;
$base-hover: #21352C;
$base-subtle: #B8CEC4;

{
    "color": {
        "base": {
            "value": "#284136",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F9F8",
                "type": "color"
            },
            "100": {
                "value": "#E5F0EB",
                "type": "color"
            },
            "200": {
                "value": "#CCE0D8",
                "type": "color"
            },
            "300": {
                "value": "#A8C7BA",
                "type": "color"
            },
            "400": {
                "value": "#85AD9C",
                "type": "color"
            },
            "500": {
                "value": "#65907D",
                "type": "color"
            },
            "600": {
                "value": "#527063",
                "type": "color"
            },
            "700": {
                "value": "#3E5149",
                "type": "color"
            },
            "800": {
                "value": "#2B3631",
                "type": "color"
            },
            "900": {
                "value": "#1B221F",
                "type": "color"
            }
        }
    }
}