What color is #10348D?

#10348D is a dark, vivid blue. In RGB it is rgb(16, 52, 141), and in HSL hsl(223, 80%, 31%).

Is #10348D accessible as text?

On white, #10348D has a contrast ratio of 11.07:1 (passes WCAG AA for body text); on black it is 1.90:1 (fails). For text placed on #10348D, use white for the best readability.

What is the closest Tailwind color to #10348D?

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

What colors go well with #10348D?

#10348D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #8E6A10. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #10348D below.

Is #10348D good for buttons?

#10348D works well for buttons and highlights, but use white text on #10348D — black text only reaches 1.90:1, below the 4.5:1 needed for normal-size labels.

Is #10348D the same as CSS darkslateblue?

No — #10348D is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#10348D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #10348D

Not just a swatch — here's how #10348D works with other colors. Named schemes with #10348D in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #10348D Anchor #141210 Accent #ACAE53 Secondary #242933 Surface #F0EEE3

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 #10348D Anchor #2A2A2E Secondary #6E6E74 Surface #E9E7DA Accent #1C1251

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.

Coastal Morning Lead · 5 colors

Lead #10348D Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

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 #10348D Secondary #7F4536 Surface #EED7C2 Accent #375246 Anchor #57223A

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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #10348D Secondary #556484 Support #9D8F88 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.

Build a working theme in the generator →

Color Lab

How #10348D 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 12/100

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 30/100

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 59/100

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 72/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #10348D

For UI

For branding

For interior

For fashion

People also use #10348D with

Bondi Blue Indigo Olive Brown Gainsboro Charcoal

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 11.1:1. Use

Subtle surface Use #C8D3F0 for cards and hover fills. Tint 80

Avoid beside #16108E — 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 #10348D 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: #10348D;
  --color-base-rgb: 16 52 141;
  --color-base-oklch: oklch(36.4% 0.153 263.7);
  --color-50: #F1F4FE;
  --color-100: #D9E3FC;
  --color-200: #B6C8F7;
  --color-300: #84A1EB;
  --color-400: #577CDB;
  --color-500: #345CC1;
  --color-600: #2F4B93;
  --color-700: #273968;
  --color-800: #1D2844;
  --color-900: #141A29;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  egyptian-blue: {
    50: '#F1F4FE',
    100: '#D9E3FC',
    200: '#B6C8F7',
    300: '#84A1EB',
    400: '#577CDB',
    500: '#345CC1',
    600: '#2F4B93',
    700: '#273968',
    800: '#1D2844',
    900: '#141A29',
  },
}

$base: #10348D;
$base-ink: #FFFFFF;
$base-50: #F1F4FE;
$base-100: #D9E3FC;
$base-200: #B6C8F7;
$base-300: #84A1EB;
$base-400: #577CDB;
$base-500: #345CC1;
$base-600: #2F4B93;
$base-700: #273968;
$base-800: #1D2844;
$base-900: #141A29;
$base-hover: #0D2972;
$base-subtle: #AABCEA;

{
    "color": {
        "base": {
            "value": "#10348D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F4FE",
                "type": "color"
            },
            "100": {
                "value": "#D9E3FC",
                "type": "color"
            },
            "200": {
                "value": "#B6C8F7",
                "type": "color"
            },
            "300": {
                "value": "#84A1EB",
                "type": "color"
            },
            "400": {
                "value": "#577CDB",
                "type": "color"
            },
            "500": {
                "value": "#345CC1",
                "type": "color"
            },
            "600": {
                "value": "#2F4B93",
                "type": "color"
            },
            "700": {
                "value": "#273968",
                "type": "color"
            },
            "800": {
                "value": "#1D2844",
                "type": "color"
            },
            "900": {
                "value": "#141A29",
                "type": "color"
            }
        }
    }
}

Palettes built on #10348D

Color Lab

Pairs with #10348D

UI roles & guardrails

In real applications

Scales

Every model

Export