What color is #443370?

#443370 is a dark indigo. In RGB it is rgb(68, 51, 112), and in HSL hsl(257, 37%, 32%).

Is #443370 accessible as text?

On white, #443370 has a contrast ratio of 10.75:1 (passes WCAG AA for body text); on black it is 1.95:1 (fails). For text placed on #443370, use white for the best readability.

What is the closest Tailwind color to #443370?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #443370?

#443370 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5F7033. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #443370 below.

Is #443370 good for buttons?

#443370 works well for buttons and highlights, but use white text on #443370 — black text only reaches 1.95:1, below the 4.5:1 needed for normal-size labels.

Is #443370 the same as CSS darkslateblue?

No — #443370 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) 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.

#443370 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #443370

Not just a swatch — here's how #443370 works with other colors. Named schemes with #443370 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #443370 Anchor #141210 Accent #DA9856 Secondary #292732 Surface #F3ECE3

Dark Slate Blue 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 #443370 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DA Accent #2D163A

Dark Slate Blue 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 Dark Slate Blue.

Coastal Morning Lead · 5 colors

Lead #443370 Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #23334A

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

Berry & Cream Lead · 5 colors

Lead #443370 Surface #F5E5D7 Anchor #5C2141 Accent #E5C2C8 Secondary #332B2F

Dark Slate Blue sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #443370 Secondary #67637A Support #9D9088 Ink #18140F

Dark Slate Blue 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 Dark Slate Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #443370 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 37/100

Cool

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 63/100

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 49/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

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

Brand distinctiveness 39/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 61/100

High

Strong interactive accent — visible and can carry a legible label.

Surface fit 30/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 87/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #443370

For UI

For branding

For interior

For fashion

People also use #443370 with

Lapis Lazuli Byzantium Dark Olive Green Gainsboro Russian Violet

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 10.8:1. Use

Subtle surface Use #D8D3E6 for cards and hover fills. Tint 80

Avoid beside #593370 — 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 #443370 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: #443370;
  --color-base-rgb: 68 51 112;
  --color-base-oklch: oklch(37.2% 0.101 293.7);
  --color-50: #F6F4FA;
  --color-100: #E7E3F3;
  --color-200: #D0C7E5;
  --color-300: #ADA0CF;
  --color-400: #8C7AB8;
  --color-500: #6C5A9B;
  --color-600: #574A78;
  --color-700: #413856;
  --color-800: #2D2839;
  --color-900: #1C1A24;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-blue: {
    50: '#F6F4FA',
    100: '#E7E3F3',
    200: '#D0C7E5',
    300: '#ADA0CF',
    400: '#8C7AB8',
    500: '#6C5A9B',
    600: '#574A78',
    700: '#413856',
    800: '#2D2839',
    900: '#1C1A24',
  },
}

$base: #443370;
$base-ink: #FFFFFF;
$base-50: #F6F4FA;
$base-100: #E7E3F3;
$base-200: #D0C7E5;
$base-300: #ADA0CF;
$base-400: #8C7AB8;
$base-500: #6C5A9B;
$base-600: #574A78;
$base-700: #413856;
$base-800: #2D2839;
$base-900: #1C1A24;
$base-hover: #372959;
$base-subtle: #C5BCDA;

{
    "color": {
        "base": {
            "value": "#443370",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F4FA",
                "type": "color"
            },
            "100": {
                "value": "#E7E3F3",
                "type": "color"
            },
            "200": {
                "value": "#D0C7E5",
                "type": "color"
            },
            "300": {
                "value": "#ADA0CF",
                "type": "color"
            },
            "400": {
                "value": "#8C7AB8",
                "type": "color"
            },
            "500": {
                "value": "#6C5A9B",
                "type": "color"
            },
            "600": {
                "value": "#574A78",
                "type": "color"
            },
            "700": {
                "value": "#413856",
                "type": "color"
            },
            "800": {
                "value": "#2D2839",
                "type": "color"
            },
            "900": {
                "value": "#1C1A24",
                "type": "color"
            }
        }
    }
}

Palettes built on #443370

Color Lab

Pairs with #443370

UI roles & guardrails

In real applications

Scales

Every model

Export