What color is #423D64?

#423D64 is a dark, muted indigo. In RGB it is rgb(66, 61, 100), and in HSL hsl(248, 24%, 32%).

Is #423D64 accessible as text?

On white, #423D64 has a contrast ratio of 10.08:1 (passes WCAG AA for body text); on black it is 2.08:1 (fails). For text placed on #423D64, use white for the best readability.

What is the closest Tailwind color to #423D64?

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

What colors go well with #423D64?

#423D64 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #60653E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #423D64 below.

Is #423D64 good for buttons?

#423D64 works well for buttons and highlights, but use white text on #423D64 — black text only reaches 2.08:1, below the 4.5:1 needed for normal-size labels.

Is #423D64 the same as CSS darkslateblue?

No — #423D64 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#423D64 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #423D64

Not just a swatch — here's how #423D64 works with other colors. Named schemes with #423D64 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #423D64 Accent #A5C4C3 Surface #E9D6BF 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 #423D64 Secondary #AFB4B8 Surface #F1F2F0 Support #7F92A7 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 #423D64 Secondary #7E4633 Surface #EDD8C2 Accent #355247 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.

Modern Café Dominant · 5 colors

Dominant #423D64 Anchor #3B2923 Surface #F3E1D2 Accent #749F7C Secondary #3C3734

Charcoal anchors this café scheme as the warm mid-tone, lifted by latte cream and a muted sage accent and grounded by espresso brown and a warm charcoal.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #423D64 Secondary #696877 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.

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Color Lab

How #423D64 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 37/100

Low

Middle-weight — neither delicate nor heavy.

Depth 60/100

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 46/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 64/100

High

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

Brand distinctiveness 25/100

Low

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

UI accent fit 55/100

Moderate

Workable accent with care around contrast.

Surface fit 40/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 91/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #423D64

For UI

For branding

For interior

For fashion

People also use #423D64 with

Teal Blue Eggplant Dark Olive Green 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 10.1:1. Use

Subtle surface Use #D8D6E2 for cards and hover fills. Tint 80

Avoid beside #503E65 — 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 #423D64 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: #423D64;
  --color-base-rgb: 66 61 100;
  --color-base-oklch: oklch(38.3% 0.066 288.8);
  --color-50: #F6F5F9;
  --color-100: #E7E5F0;
  --color-200: #CFCCE0;
  --color-300: #ACA8C7;
  --color-400: #8A85AD;
  --color-500: #6B6590;
  --color-600: #565270;
  --color-700: #403E51;
  --color-800: #2C2B36;
  --color-900: #1C1B22;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  charcoal: {
    50: '#F6F5F9',
    100: '#E7E5F0',
    200: '#CFCCE0',
    300: '#ACA8C7',
    400: '#8A85AD',
    500: '#6B6590',
    600: '#565270',
    700: '#403E51',
    800: '#2C2B36',
    900: '#1C1B22',
  },
}

$base: #423D64;
$base-ink: #FFFFFF;
$base-50: #F6F5F9;
$base-100: #E7E5F0;
$base-200: #CFCCE0;
$base-300: #ACA8C7;
$base-400: #8A85AD;
$base-500: #6B6590;
$base-600: #565270;
$base-700: #403E51;
$base-800: #2C2B36;
$base-900: #1C1B22;
$base-hover: #363251;
$base-subtle: #C4C1D4;

{
    "color": {
        "base": {
            "value": "#423D64",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F5F9",
                "type": "color"
            },
            "100": {
                "value": "#E7E5F0",
                "type": "color"
            },
            "200": {
                "value": "#CFCCE0",
                "type": "color"
            },
            "300": {
                "value": "#ACA8C7",
                "type": "color"
            },
            "400": {
                "value": "#8A85AD",
                "type": "color"
            },
            "500": {
                "value": "#6B6590",
                "type": "color"
            },
            "600": {
                "value": "#565270",
                "type": "color"
            },
            "700": {
                "value": "#403E51",
                "type": "color"
            },
            "800": {
                "value": "#2C2B36",
                "type": "color"
            },
            "900": {
                "value": "#1C1B22",
                "type": "color"
            }
        }
    }
}

Palettes built on #423D64

Color Lab

Pairs with #423D64

UI roles & guardrails

In real applications

Scales

Every model

Export