What color is #372A89?

#372A89 is a dark indigo. In RGB it is rgb(55, 42, 137), and in HSL hsl(248, 53%, 35%).

Is #372A89 accessible as text?

On white, #372A89 has a contrast ratio of 11.32:1 (passes WCAG AA for body text); on black it is 1.85:1 (fails). For text placed on #372A89, use white for the best readability.

What is the closest Tailwind color to #372A89?

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

What colors go well with #372A89?

#372A89 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #7C892A. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #372A89 below.

Is #372A89 good for buttons?

#372A89 works well for buttons and highlights, but use white text on #372A89 — black text only reaches 1.85:1, below the 4.5:1 needed for normal-size labels.

Is #372A89 the same as CSS darkslateblue?

No — #372A89 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#372A89 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #372A89

Not just a swatch — here's how #372A89 works with other colors. Named schemes with #372A89 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #372A89 Anchor #141210 Accent #DB9758 Secondary #272833 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 #372A89 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DA Accent #290C49

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 #372A89 Accent #A5C4C3 Surface #EAD5BF 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.

Vintage Leather Lead · 5 colors

Lead #372A89 Secondary #7F4534 Surface #EDD7C2 Accent #365247 Anchor #582238

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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #372A89 Secondary #5F6182 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.

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Color Lab

How #372A89 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 23/100

Cool

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

Softness 28/100

Low

Firm and assertive — carries weight and contrast.

Depth 66/100

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 33/100

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 58/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 62/100

High

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

Surface fit 16/100

Very low

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

Print safety 78/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #372A89

For UI

For branding

For interior

For fashion

People also use #372A89 with

Lapis Lazuli Eminence 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 11.3:1. Use

Subtle surface Use #D5D1EB for cards and hover fills. Tint 80

Avoid beside #562A89 — 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 #372A89 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: #372A89;
  --color-base-rgb: 55 42 137;
  --color-base-oklch: oklch(36.4% 0.150 282.1);
  --color-50: #F4F3FC;
  --color-100: #E2DFF6;
  --color-200: #C6C1EC;
  --color-300: #9F95DA;
  --color-400: #796DC5;
  --color-500: #584CA9;
  --color-600: #494082;
  --color-700: #38325D;
  --color-800: #27243D;
  --color-900: #191726;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  dark-slate-blue: {
    50: '#F4F3FC',
    100: '#E2DFF6',
    200: '#C6C1EC',
    300: '#9F95DA',
    400: '#796DC5',
    500: '#584CA9',
    600: '#494082',
    700: '#38325D',
    800: '#27243D',
    900: '#191726',
  },
}

$base: #372A89;
$base-ink: #FFFFFF;
$base-50: #F4F3FC;
$base-100: #E2DFF6;
$base-200: #C6C1EC;
$base-300: #9F95DA;
$base-400: #796DC5;
$base-500: #584CA9;
$base-600: #494082;
$base-700: #38325D;
$base-800: #27243D;
$base-900: #191726;
$base-hover: #2C226D;
$base-subtle: #BFB9E1;

{
    "color": {
        "base": {
            "value": "#372A89",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F3FC",
                "type": "color"
            },
            "100": {
                "value": "#E2DFF6",
                "type": "color"
            },
            "200": {
                "value": "#C6C1EC",
                "type": "color"
            },
            "300": {
                "value": "#9F95DA",
                "type": "color"
            },
            "400": {
                "value": "#796DC5",
                "type": "color"
            },
            "500": {
                "value": "#584CA9",
                "type": "color"
            },
            "600": {
                "value": "#494082",
                "type": "color"
            },
            "700": {
                "value": "#38325D",
                "type": "color"
            },
            "800": {
                "value": "#27243D",
                "type": "color"
            },
            "900": {
                "value": "#191726",
                "type": "color"
            }
        }
    }
}

Palettes built on #372A89

Color Lab

Pairs with #372A89

UI roles & guardrails

In real applications

Scales

Every model

Export