What color is #48288B?

#48288B is a dark indigo. In RGB it is rgb(72, 40, 139), and in HSL hsl(259, 55%, 35%).

Is #48288B accessible as text?

On white, #48288B has a contrast ratio of 10.76:1 (passes WCAG AA for body text); on black it is 1.95:1 (fails). For text placed on #48288B, use white for the best readability.

What is the closest Tailwind color to #48288B?

The nearest Tailwind CSS token is violet-900 (#4D179A).

What colors go well with #48288B?

#48288B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #6B8A28. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #48288B below.

Is #48288B good for buttons?

#48288B works well for buttons and highlights, but use white text on #48288B — black text only reaches 1.95:1, below the 4.5:1 needed for normal-size labels.

Is #48288B the same as CSS darkslateblue?

No — #48288B 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.

#48288B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #48288B

Not just a swatch — here's how #48288B works with other colors. Named schemes with #48288B in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #48288B 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 #48288B Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DA Accent #340C49

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 #48288B Accent #A5C4C3 Surface #E9D6BF Secondary #9AA0A1 Anchor #22334A

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 #48288B 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 #48288B Secondary #696386 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 #48288B 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 29/100

Cool

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

Softness 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 64/100

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 34/100

Low

A faint retro warmth without tipping into sepia.

Luxury 65/100

High

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

Brand distinctiveness 60/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 67/100

High

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

Surface fit 15/100

Very low

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

Print safety 79/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #48288B

For UI

For branding

For interior

For fashion

People also use #48288B with

Cerulean Mardi Gras Olive Drab 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 #D9D1EB for cards and hover fills. Tint 80

Avoid beside #68288A — 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 #48288B 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: #48288B;
  --color-base-rgb: 72 40 139;
  --color-base-oklch: oklch(37.9% 0.154 292.3);
  --color-50: #F6F3FC;
  --color-100: #E6DFF6;
  --color-200: #CEC0ED;
  --color-300: #AB94DB;
  --color-400: #886BC7;
  --color-500: #694AAB;
  --color-600: #543F83;
  --color-700: #3F315E;
  --color-800: #2C233E;
  --color-900: #1C1726;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-blue: {
    50: '#F6F3FC',
    100: '#E6DFF6',
    200: '#CEC0ED',
    300: '#AB94DB',
    400: '#886BC7',
    500: '#694AAB',
    600: '#543F83',
    700: '#3F315E',
    800: '#2C233E',
    900: '#1C1726',
  },
}

$base: #48288B;
$base-ink: #FFFFFF;
$base-50: #F6F3FC;
$base-100: #E6DFF6;
$base-200: #CEC0ED;
$base-300: #AB94DB;
$base-400: #886BC7;
$base-500: #694AAB;
$base-600: #543F83;
$base-700: #3F315E;
$base-800: #2C233E;
$base-900: #1C1726;
$base-hover: #39206F;
$base-subtle: #C6B8E2;

{
    "color": {
        "base": {
            "value": "#48288B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F3FC",
                "type": "color"
            },
            "100": {
                "value": "#E6DFF6",
                "type": "color"
            },
            "200": {
                "value": "#CEC0ED",
                "type": "color"
            },
            "300": {
                "value": "#AB94DB",
                "type": "color"
            },
            "400": {
                "value": "#886BC7",
                "type": "color"
            },
            "500": {
                "value": "#694AAB",
                "type": "color"
            },
            "600": {
                "value": "#543F83",
                "type": "color"
            },
            "700": {
                "value": "#3F315E",
                "type": "color"
            },
            "800": {
                "value": "#2C233E",
                "type": "color"
            },
            "900": {
                "value": "#1C1726",
                "type": "color"
            }
        }
    }
}

Palettes built on #48288B

Color Lab

Pairs with #48288B

UI roles & guardrails

In real applications

Scales

Every model

Export