What color is #373758?

#373758 is a dark, muted blue-violet. In RGB it is rgb(55, 55, 88), and in HSL hsl(240, 23%, 28%).

Is #373758 accessible as text?

On white, #373758 has a contrast ratio of 11.35:1 (passes WCAG AA for body text); on black it is 1.85:1 (fails). For text placed on #373758, use white for the best readability.

What is the closest Tailwind color to #373758?

The nearest Tailwind CSS token is mauve-700 (#463947).

What colors go well with #373758?

#373758 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #585837. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #373758 below.

Is #373758 good for buttons?

#373758 works well for buttons and highlights, but use white text on #373758 — black text only reaches 1.85:1, below the 4.5:1 needed for normal-size labels.

Is #373758 the same as CSS darkslategray?

No — #373758 is not the CSS named color darkslategray, but darkslategray (#2F4F4F) is the closest CSS named color.

#373758 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #373758

Not just a swatch — here's how #373758 works with other colors. Named schemes with #373758 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #373758 Accent #A5C4C3 Surface #EAD5BF Secondary #9AA0A1 Anchor #22334A

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 #373758 Secondary #AEB4B8 Surface #F1F2F0 Support #7E92A7 Anchor #2E3236

Charcoal keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Vintage Leather Lead · 5 colors

Lead #373758 Secondary #7F4534 Surface #EDD7C2 Accent #365247 Anchor #582238

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.

Luxury Packaging Feature · 5 colors

Feature #373758 Anchor #141210 Accent #DB9758 Secondary #272833 Surface #F3ECE3

Charcoal 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #373758 Secondary #5F606C Support #9D9088 Ink #18140F

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 #373758 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 40/100

Neutral

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

Softness 35/100

Low

Middle-weight — neither delicate nor heavy.

Depth 62/100

High

Deep and grounding — anchors a layout, strong dark-mode base.

Naturalness 0/100

Very low

Reads engineered rather than organic — synthetic, digital.

Vintage feel 40/100

Low

A faint retro warmth without tipping into sepia.

Luxury 66/100

High

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

Brand distinctiveness 22/100

Low

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

UI accent fit 44/100

Moderate

Workable accent with care around contrast.

Surface fit 45/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 92/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #373758

For UI

For branding

For interior

For fashion

People also use #373758 with

Feldgrau Eggplant Ebony Gainsboro Gunmetal 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 11.4:1. Use

Subtle surface Use #D4D4E0 for cards and hover fills. Tint 80

Avoid beside #423758 — 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 #373758 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: #373758;
  --color-base-rgb: 55 55 88;
  --color-base-oklch: oklch(35.2% 0.057 283.1);
  --color-50: #F5F5F9;
  --color-100: #E6E6F0;
  --color-200: #CDCDE0;
  --color-300: #A9A9C6;
  --color-400: #8686AC;
  --color-500: #66668F;
  --color-600: #53536F;
  --color-700: #3E3E51;
  --color-800: #2B2B36;
  --color-900: #1B1B22;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  charcoal: {
    50: '#F5F5F9',
    100: '#E6E6F0',
    200: '#CDCDE0',
    300: '#A9A9C6',
    400: '#8686AC',
    500: '#66668F',
    600: '#53536F',
    700: '#3E3E51',
    800: '#2B2B36',
    900: '#1B1B22',
  },
}

$base: #373758;
$base-ink: #FFFFFF;
$base-50: #F5F5F9;
$base-100: #E6E6F0;
$base-200: #CDCDE0;
$base-300: #A9A9C6;
$base-400: #8686AC;
$base-500: #66668F;
$base-600: #53536F;
$base-700: #3E3E51;
$base-800: #2B2B36;
$base-900: #1B1B22;
$base-hover: #2C2C46;
$base-subtle: #BEBED2;

{
    "color": {
        "base": {
            "value": "#373758",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F5F5F9",
                "type": "color"
            },
            "100": {
                "value": "#E6E6F0",
                "type": "color"
            },
            "200": {
                "value": "#CDCDE0",
                "type": "color"
            },
            "300": {
                "value": "#A9A9C6",
                "type": "color"
            },
            "400": {
                "value": "#8686AC",
                "type": "color"
            },
            "500": {
                "value": "#66668F",
                "type": "color"
            },
            "600": {
                "value": "#53536F",
                "type": "color"
            },
            "700": {
                "value": "#3E3E51",
                "type": "color"
            },
            "800": {
                "value": "#2B2B36",
                "type": "color"
            },
            "900": {
                "value": "#1B1B22",
                "type": "color"
            }
        }
    }
}