What color is #372E99?

#372E99 is a dark blue-violet. In RGB it is rgb(55, 46, 153), and in HSL hsl(245, 54%, 39%).

Is #372E99 accessible as text?

On white, #372E99 has a contrast ratio of 10.43:1 (passes WCAG AA for body text); on black it is 2.01:1 (fails). For text placed on #372E99, use white for the best readability.

What is the closest Tailwind color to #372E99?

The nearest Tailwind CSS token is indigo-800 (#372AAC).

What colors go well with #372E99?

#372E99 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #90992E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #372E99 below.

Is #372E99 good for buttons?

#372E99 works well for buttons and highlights, but use white text on #372E99 — black text only reaches 2.01:1, below the 4.5:1 needed for normal-size labels.

Is #372E99 the same as CSS darkslateblue?

No — #372E99 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#372E99 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #372E99

Not just a swatch — here's how #372E99 works with other colors. Named schemes with #372E99 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #372E99 Accent #A5C4C2 Surface #EAD5BF Secondary #9AA0A1 Anchor #22344A

Egyptian 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 #372E99 Secondary #7F4534 Surface #EDD7C2 Accent #365247 Anchor #582239

Egyptian 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.

Modern Café Dominant · 5 colors

Dominant #372E99 Anchor #3B2923 Surface #F3E1D2 Accent #769F7B Secondary #3C3734

Egyptian Blue 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.

Berry & Cream Lead · 5 colors

Lead #372E99 Surface #F6E5D8 Anchor #5B2142 Accent #E5C2C9 Secondary #322B2F

Egyptian 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 #372E99 Secondary #63678C Support #9D9088 Ink #18140F

Egyptian 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 Egyptian Blue carrying the quiet middle.

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Color Lab

How #372E99 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 17/100

Cool

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

Softness 28/100

Low

Firm and assertive — carries weight and contrast.

Depth 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 29/100

Low

A faint retro warmth without tipping into sepia.

Luxury 63/100

High

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

Brand distinctiveness 45/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 68/100

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 74/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #372E99

For UI

For branding

For interior

For fashion

People also use #372E99 with

Steel Blue Grape Moss Green 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 10.4:1. Use

Subtle surface Use #D6D4EC for cards and hover fills. Tint 80

Avoid beside #5A2E99 — 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 #372E99 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: #372E99;
  --color-base-rgb: 55 46 153;
  --color-base-oklch: oklch(38.6% 0.167 278.9);
  --color-50: #F4F3FC;
  --color-100: #E1DFF6;
  --color-200: #C4C0EC;
  --color-300: #9B95DA;
  --color-400: #746CC6;
  --color-500: #534BAA;
  --color-600: #453F83;
  --color-700: #35325D;
  --color-800: #26233D;
  --color-900: #191726;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  egyptian-blue: {
    50: '#F4F3FC',
    100: '#E1DFF6',
    200: '#C4C0EC',
    300: '#9B95DA',
    400: '#746CC6',
    500: '#534BAA',
    600: '#453F83',
    700: '#35325D',
    800: '#26233D',
    900: '#191726',
  },
}

$base: #372E99;
$base-ink: #FFFFFF;
$base-50: #F4F3FC;
$base-100: #E1DFF6;
$base-200: #C4C0EC;
$base-300: #9B95DA;
$base-400: #746CC6;
$base-500: #534BAA;
$base-600: #453F83;
$base-700: #35325D;
$base-800: #26233D;
$base-900: #191726;
$base-hover: #2C257B;
$base-subtle: #C0BDE3;

{
    "color": {
        "base": {
            "value": "#372E99",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F3FC",
                "type": "color"
            },
            "100": {
                "value": "#E1DFF6",
                "type": "color"
            },
            "200": {
                "value": "#C4C0EC",
                "type": "color"
            },
            "300": {
                "value": "#9B95DA",
                "type": "color"
            },
            "400": {
                "value": "#746CC6",
                "type": "color"
            },
            "500": {
                "value": "#534BAA",
                "type": "color"
            },
            "600": {
                "value": "#453F83",
                "type": "color"
            },
            "700": {
                "value": "#35325D",
                "type": "color"
            },
            "800": {
                "value": "#26233D",
                "type": "color"
            },
            "900": {
                "value": "#191726",
                "type": "color"
            }
        }
    }
}

Palettes built on #372E99

Color Lab

Pairs with #372E99

UI roles & guardrails

In real applications

Scales

Every model

Export