What color is #263B90?

#263B90 is a dark blue. In RGB it is rgb(38, 59, 144), and in HSL hsl(228, 58%, 36%).

Is #263B90 accessible as text?

On white, #263B90 has a contrast ratio of 9.95:1 (passes WCAG AA for body text); on black it is 2.11:1 (fails). For text placed on #263B90, use white for the best readability.

What is the closest Tailwind color to #263B90?

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

What colors go well with #263B90?

#263B90 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #917C27. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #263B90 below.

Is #263B90 good for buttons?

#263B90 works well for buttons and highlights, but use white text on #263B90 — black text only reaches 2.11:1, below the 4.5:1 needed for normal-size labels.

Is #263B90 the same as CSS darkslateblue?

No — #263B90 is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#263B90 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #263B90

Not just a swatch — here's how #263B90 works with other colors. Named schemes with #263B90 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #263B90 Accent #A5C4C2 Surface #EAD5C0 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.

Tech Product Signal · 5 colors

Signal #263B90 Surface #14161A Highlight #F4F6F8 Secondary #5B6672 Accent #4760AF

Egyptian 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 Egyptian Blue.

Vintage Leather Lead · 5 colors

Lead #263B90 Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #58223A

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.

Berry & Cream Lead · 5 colors

Lead #263B90 Surface #F6E5D8 Anchor #5B2143 Accent #E5C2CA 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 #263B90 Secondary #606B89 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 #263B90 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 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 39/100

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 16/100

Very low

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

Print safety 75/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #263B90

For UI

For branding

For interior

For fashion

People also use #263B90 with

Bondi Blue Dark Slate Blue Olive Gainsboro Gunmetal Gray

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 9.9:1. Use

Subtle surface Use #D1D6EC for cards and hover fills. Tint 80

Avoid beside #352791 — 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 #263B90 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: #263B90;
  --color-base-rgb: 38 59 144;
  --color-base-oklch: oklch(39.0% 0.143 268.4);
  --color-50: #F2F4FC;
  --color-100: #DEE3F7;
  --color-200: #BFC8EE;
  --color-300: #92A1DD;
  --color-400: #697CC9;
  --color-500: #475CAD;
  --color-600: #3D4B85;
  --color-700: #30395F;
  --color-800: #23283E;
  --color-900: #171A26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  egyptian-blue: {
    50: '#F2F4FC',
    100: '#DEE3F7',
    200: '#BFC8EE',
    300: '#92A1DD',
    400: '#697CC9',
    500: '#475CAD',
    600: '#3D4B85',
    700: '#30395F',
    800: '#23283E',
    900: '#171A26',
  },
}

$base: #263B90;
$base-ink: #FFFFFF;
$base-50: #F2F4FC;
$base-100: #DEE3F7;
$base-200: #BFC8EE;
$base-300: #92A1DD;
$base-400: #697CC9;
$base-500: #475CAD;
$base-600: #3D4B85;
$base-700: #30395F;
$base-800: #23283E;
$base-900: #171A26;
$base-hover: #1F3074;
$base-subtle: #B8C1E4;

{
    "color": {
        "base": {
            "value": "#263B90",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F4FC",
                "type": "color"
            },
            "100": {
                "value": "#DEE3F7",
                "type": "color"
            },
            "200": {
                "value": "#BFC8EE",
                "type": "color"
            },
            "300": {
                "value": "#92A1DD",
                "type": "color"
            },
            "400": {
                "value": "#697CC9",
                "type": "color"
            },
            "500": {
                "value": "#475CAD",
                "type": "color"
            },
            "600": {
                "value": "#3D4B85",
                "type": "color"
            },
            "700": {
                "value": "#30395F",
                "type": "color"
            },
            "800": {
                "value": "#23283E",
                "type": "color"
            },
            "900": {
                "value": "#171A26",
                "type": "color"
            }
        }
    }
}

Palettes built on #263B90

Color Lab

Pairs with #263B90

UI roles & guardrails

In real applications

Scales

Every model

Export