What color is #331EA6?

#331EA6 is a dark indigo. In RGB it is rgb(51, 30, 166), and in HSL hsl(249, 69%, 38%).

Is #331EA6 accessible as text?

On white, #331EA6 has a contrast ratio of 11.19:1 (passes WCAG AA for body text); on black it is 1.88:1 (fails). For text placed on #331EA6, use white for the best readability.

What is the closest Tailwind color to #331EA6?

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

What colors go well with #331EA6?

#331EA6 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #90A41E. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #331EA6 below.

Is #331EA6 good for buttons?

#331EA6 works well for buttons and highlights, but use white text on #331EA6 — black text only reaches 1.88:1, below the 4.5:1 needed for normal-size labels.

Is #331EA6 the same as CSS mediumblue?

No — #331EA6 is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#331EA6 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #331EA6

Not just a swatch — here's how #331EA6 works with other colors. Named schemes with #331EA6 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #331EA6 Anchor #141210 Accent #DC9758 Secondary #262833 Surface #F3ECE3

Egyptian 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 #331EA6 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #2C005C

Egyptian 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 Egyptian Blue.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #331EA6 Secondary #5E648F 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.

Coastal Morning Lead · 5 colors

Lead #331EA6 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.

Sunset Warmth Glow · 5 colors

Glow #331EA6 Secondary #E86A71 Accent #F6934E Anchor #583B57 Surface #F7E7D7

Egyptian Blue glows at the center of this sunset palette, joined by coral and gold, deepened by a plum anchor and cooled with cream.

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Color Lab

How #331EA6 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 16/100

Cool

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

Softness 25/100

Low

Firm and assertive — carries weight and contrast.

Depth 67/100

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 20/100

Very low

Clean and current — no dusty, aged cast.

Luxury 61/100

High

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

Brand distinctiveness 77/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 57/100

Moderate

Workable accent with care around contrast.

Surface fit 16/100

Very low

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

Print safety 69/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #331EA6

For UI

For branding

For interior

For fashion

People also use #331EA6 with

Denim Blue Grape Citron 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 11.2:1. Use

Subtle surface Use #D4D0EF for cards and hover fills. Tint 80

Avoid beside #5F1EA4 — 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 #331EA6 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: #331EA6;
  --color-base-rgb: 51 30 166;
  --color-base-oklch: oklch(37.5% 0.199 277.7);
  --color-50: #F3F2FD;
  --color-100: #E0DCF9;
  --color-200: #C3BAF2;
  --color-300: #988BE4;
  --color-400: #7160D2;
  --color-500: #503EB7;
  --color-600: #43368C;
  --color-700: #342C63;
  --color-800: #252041;
  --color-900: #181528;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  egyptian-blue: {
    50: '#F3F2FD',
    100: '#E0DCF9',
    200: '#C3BAF2',
    300: '#988BE4',
    400: '#7160D2',
    500: '#503EB7',
    600: '#43368C',
    700: '#342C63',
    800: '#252041',
    900: '#181528',
  },
}

$base: #331EA6;
$base-ink: #FFFFFF;
$base-50: #F3F2FD;
$base-100: #E0DCF9;
$base-200: #C3BAF2;
$base-300: #988BE4;
$base-400: #7160D2;
$base-500: #503EB7;
$base-600: #43368C;
$base-700: #342C63;
$base-800: #252041;
$base-900: #181528;
$base-hover: #281883;
$base-subtle: #BEB7E8;

{
    "color": {
        "base": {
            "value": "#331EA6",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F2FD",
                "type": "color"
            },
            "100": {
                "value": "#E0DCF9",
                "type": "color"
            },
            "200": {
                "value": "#C3BAF2",
                "type": "color"
            },
            "300": {
                "value": "#988BE4",
                "type": "color"
            },
            "400": {
                "value": "#7160D2",
                "type": "color"
            },
            "500": {
                "value": "#503EB7",
                "type": "color"
            },
            "600": {
                "value": "#43368C",
                "type": "color"
            },
            "700": {
                "value": "#342C63",
                "type": "color"
            },
            "800": {
                "value": "#252041",
                "type": "color"
            },
            "900": {
                "value": "#181528",
                "type": "color"
            }
        }
    }
}

Palettes built on #331EA6

Color Lab

Pairs with #331EA6

UI roles & guardrails

In real applications

Scales

Every model

Export