What color is #353B42?

#353B42 is a dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(53, 59, 66), and in HSL hsl(212, 11%, 23%).

Is #353B42 accessible as text?

On white, #353B42 has a contrast ratio of 11.32:1 (passes WCAG AA for body text); on black it is 1.86:1 (fails). For text placed on #353B42, use white for the best readability.

What is the closest Tailwind color to #353B42?

The nearest Tailwind CSS token is zinc-700 (#3F3F46).

What colors go well with #353B42?

As a neutral, #353B42 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 #353B42 the same as CSS darkslategray?

No — #353B42 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.

#353B42 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #353B42

Not just a swatch — here's how #353B42 works with other colors. Named schemes with #353B42 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #353B42 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #555B62

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

Vintage Leather Lead · 5 colors

Lead #353B42 Secondary #7F4537 Surface #E1DDC0 Accent #375245 Anchor #57233B

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 #353B42 Surface #ECEADC Highlight #F4F2E7 Secondary #B2B2A0 Ink #2C2724

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.

Coastal Morning Lead · 5 colors

Lead #353B42 Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Onyx opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #353B42 Secondary #5E6063 Support #959386 Ink #16140F

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.

Build a working theme in the generator →

Color Lab

How #353B42 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 46/100

Neutral

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

Softness 38/100

Low

Middle-weight — neither delicate nor heavy.

Depth 61/100

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 26/100

Low

A faint retro warmth without tipping into sepia.

Luxury 62/100

High

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

Brand distinctiveness 6/100

Very low

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

UI accent fit 30/100

Low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 58/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 97/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #353B42

For UI

For branding

For interior

For fashion

People also use #353B42 with

Feldgrau Onyx Taupe 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 11.3:1. Use

Subtle surface Use #D5D8DB for cards and hover fills. Tint 80

Avoid beside #343641 — 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 #353B42 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: #353B42;
  --color-base-rgb: 53 59 66;
  --color-base-oklch: oklch(34.9% 0.015 252.3);
  --color-50: #F6F7F8;
  --color-100: #E8EAED;
  --color-200: #D2D6DB;
  --color-300: #B1B7BF;
  --color-400: #9098A2;
  --color-500: #717A84;
  --color-600: #5A6068;
  --color-700: #43474C;
  --color-800: #2E3033;
  --color-900: #1D1F20;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  onyx: {
    50: '#F6F7F8',
    100: '#E8EAED',
    200: '#D2D6DB',
    300: '#B1B7BF',
    400: '#9098A2',
    500: '#717A84',
    600: '#5A6068',
    700: '#43474C',
    800: '#2E3033',
    900: '#1D1F20',
  },
}

$base: #353B42;
$base-ink: #FFFFFF;
$base-50: #F6F7F8;
$base-100: #E8EAED;
$base-200: #D2D6DB;
$base-300: #B1B7BF;
$base-400: #9098A2;
$base-500: #717A84;
$base-600: #5A6068;
$base-700: #43474C;
$base-800: #2E3033;
$base-900: #1D1F20;
$base-hover: #2A2F34;
$base-subtle: #BFC4C9;

{
    "color": {
        "base": {
            "value": "#353B42",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F7F8",
                "type": "color"
            },
            "100": {
                "value": "#E8EAED",
                "type": "color"
            },
            "200": {
                "value": "#D2D6DB",
                "type": "color"
            },
            "300": {
                "value": "#B1B7BF",
                "type": "color"
            },
            "400": {
                "value": "#9098A2",
                "type": "color"
            },
            "500": {
                "value": "#717A84",
                "type": "color"
            },
            "600": {
                "value": "#5A6068",
                "type": "color"
            },
            "700": {
                "value": "#43474C",
                "type": "color"
            },
            "800": {
                "value": "#2E3033",
                "type": "color"
            },
            "900": {
                "value": "#1D1F20",
                "type": "color"
            }
        }
    }
}