What color is #2D398F?

#2D398F is a dark blue-violet. In RGB it is rgb(45, 57, 143), and in HSL hsl(233, 52%, 37%).

Is #2D398F accessible as text?

On white, #2D398F has a contrast ratio of 10.03:1 (passes WCAG AA for body text); on black it is 2.09:1 (fails). For text placed on #2D398F, use white for the best readability.

What is the closest Tailwind color to #2D398F?

The nearest Tailwind CSS token is blue-900 (#1C398E).

What colors go well with #2D398F?

#2D398F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #8F842D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #2D398F below.

Is #2D398F good for buttons?

#2D398F works well for buttons and highlights, but use white text on #2D398F — black text only reaches 2.09:1, below the 4.5:1 needed for normal-size labels.

Is #2D398F the same as CSS darkslateblue?

No — #2D398F is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#2D398F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #2D398F

Not just a swatch — here's how #2D398F works with other colors. Named schemes with #2D398F in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #2D398F Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

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

Tech Product Signal · 5 colors

Signal #2D398F Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #4D5EAE

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

Vintage Leather Lead · 5 colors

Lead #2D398F Secondary #7F4535 Surface #EED7C2 Accent #365247 Anchor #582239

Dark Slate Blue plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Berry & Cream Lead · 5 colors

Lead #2D398F Surface #F6E5D8 Anchor #5B2143 Accent #E5C2C9 Secondary #322B2F

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 #2D398F Secondary #616A89 Support #9D8F88 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 #2D398F 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 19/100

Cool

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

Softness 30/100

Low

Firm and assertive — carries weight and contrast.

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 35/100

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 38/100

Low

Recognisable but shares space with nearby hues.

UI accent fit 71/100

High

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

Surface fit 17/100

Very low

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

Print safety 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #2D398F

For UI

For branding

For interior

For fashion

People also use #2D398F with

Steel Blue Rebecca Purple Olive Gainsboro Prussian Blue

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 10.0:1. Use

Subtle surface Use #D3D6EB for cards and hover fills. Tint 80

Avoid beside #432D8F — 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 #2D398F at work across the surfaces designers actually ship.

Website / UI

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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: #2D398F;
  --color-base-rgb: 45 57 143;
  --color-base-oklch: oklch(38.9% 0.142 272.0);
  --color-50: #F3F4FC;
  --color-100: #DFE2F6;
  --color-200: #C1C6EB;
  --color-300: #969ED9;
  --color-400: #6E78C4;
  --color-500: #4D57A8;
  --color-600: #414881;
  --color-700: #32375C;
  --color-800: #24273D;
  --color-900: #181926;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-blue: {
    50: '#F3F4FC',
    100: '#DFE2F6',
    200: '#C1C6EB',
    300: '#969ED9',
    400: '#6E78C4',
    500: '#4D57A8',
    600: '#414881',
    700: '#32375C',
    800: '#24273D',
    900: '#181926',
  },
}

$base: #2D398F;
$base-ink: #FFFFFF;
$base-50: #F3F4FC;
$base-100: #DFE2F6;
$base-200: #C1C6EB;
$base-300: #969ED9;
$base-400: #6E78C4;
$base-500: #4D57A8;
$base-600: #414881;
$base-700: #32375C;
$base-800: #24273D;
$base-900: #181926;
$base-hover: #242D73;
$base-subtle: #BCC0E2;

{
    "color": {
        "base": {
            "value": "#2D398F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F4FC",
                "type": "color"
            },
            "100": {
                "value": "#DFE2F6",
                "type": "color"
            },
            "200": {
                "value": "#C1C6EB",
                "type": "color"
            },
            "300": {
                "value": "#969ED9",
                "type": "color"
            },
            "400": {
                "value": "#6E78C4",
                "type": "color"
            },
            "500": {
                "value": "#4D57A8",
                "type": "color"
            },
            "600": {
                "value": "#414881",
                "type": "color"
            },
            "700": {
                "value": "#32375C",
                "type": "color"
            },
            "800": {
                "value": "#24273D",
                "type": "color"
            },
            "900": {
                "value": "#181926",
                "type": "color"
            }
        }
    }
}

Palettes built on #2D398F

Color Lab

Pairs with #2D398F

UI roles & guardrails

In real applications

Scales

Every model

Export