What color is #263B7F?

#263B7F is a dark blue. In RGB it is rgb(38, 59, 127), and in HSL hsl(226, 54%, 32%).

Is #263B7F accessible as text?

On white, #263B7F has a contrast ratio of 10.42:1 (passes WCAG AA for body text); on black it is 2.01:1 (fails). For text placed on #263B7F, use white for the best readability.

What is the closest Tailwind color to #263B7F?

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

What colors go well with #263B7F?

#263B7F pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #7E6926. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #263B7F below.

Is #263B7F good for buttons?

#263B7F works well for buttons and highlights, but use white text on #263B7F — black text only reaches 2.01:1, below the 4.5:1 needed for normal-size labels.

Is #263B7F the same as CSS darkslateblue?

No — #263B7F is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#263B7F Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #263B7F

Not just a swatch — here's how #263B7F works with other colors. Named schemes with #263B7F in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #263B7F Anchor #141210 Accent #DD965A Secondary #242933 Surface #F4ECE3

Classic 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 #263B7F Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #211A48

Classic 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 Classic Blue.

Coastal Morning Lead · 5 colors

Lead #263B7F Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Classic 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 #263B7F Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #58223A

Classic 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 #263B7F Secondary #5D6780 Support #9D8F88 Ink #18140F

Classic 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 Classic Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #263B7F 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 22/100

Cool

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

Softness 32/100

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 40/100

Low

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

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

Brand distinctiveness 46/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 65/100

High

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

Surface fit 25/100

Low

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

Print safety 79/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #263B7F

For UI

For branding

For interior

For fashion

People also use #263B7F with

Dark Cyan 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 10.4:1. Use

Subtle surface Use #CFD5EA for cards and hover fills. Tint 80

Avoid beside #2E267E — 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 #263B7F 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: #263B7F;
  --color-base-rgb: 38 59 127;
  --color-base-oklch: oklch(37.6% 0.118 267.5);
  --color-50: #F3F5FC;
  --color-100: #DFE4F6;
  --color-200: #C0CAEC;
  --color-300: #95A5DA;
  --color-400: #6C81C6;
  --color-500: #4B61AA;
  --color-600: #3F4F83;
  --color-700: #323C5D;
  --color-800: #232A3D;
  --color-900: #171B26;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F3F5FC',
    100: '#DFE4F6',
    200: '#C0CAEC',
    300: '#95A5DA',
    400: '#6C81C6',
    500: '#4B61AA',
    600: '#3F4F83',
    700: '#323C5D',
    800: '#232A3D',
    900: '#171B26',
  },
}

$base: #263B7F;
$base-ink: #FFFFFF;
$base-50: #F3F5FC;
$base-100: #DFE4F6;
$base-200: #C0CAEC;
$base-300: #95A5DA;
$base-400: #6C81C6;
$base-500: #4B61AA;
$base-600: #3F4F83;
$base-700: #323C5D;
$base-800: #232A3D;
$base-900: #171B26;
$base-hover: #1E2E65;
$base-subtle: #B6C0E0;

{
    "color": {
        "base": {
            "value": "#263B7F",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F3F5FC",
                "type": "color"
            },
            "100": {
                "value": "#DFE4F6",
                "type": "color"
            },
            "200": {
                "value": "#C0CAEC",
                "type": "color"
            },
            "300": {
                "value": "#95A5DA",
                "type": "color"
            },
            "400": {
                "value": "#6C81C6",
                "type": "color"
            },
            "500": {
                "value": "#4B61AA",
                "type": "color"
            },
            "600": {
                "value": "#3F4F83",
                "type": "color"
            },
            "700": {
                "value": "#323C5D",
                "type": "color"
            },
            "800": {
                "value": "#232A3D",
                "type": "color"
            },
            "900": {
                "value": "#171B26",
                "type": "color"
            }
        }
    }
}

Palettes built on #263B7F

Color Lab

Pairs with #263B7F

UI roles & guardrails

In real applications

Scales

Every model

Export