What color is #10427A?

#10427A is a dark, vivid blue. In RGB it is rgb(16, 66, 122), and in HSL hsl(212, 77%, 27%).

Is #10427A accessible as text?

On white, #10427A has a contrast ratio of 10.08:1 (passes WCAG AA for body text); on black it is 2.08:1 (fails). For text placed on #10427A, use white for the best readability.

What is the closest Tailwind color to #10427A?

The nearest Tailwind CSS token is sky-900 (#024A70).

What colors go well with #10427A?

#10427A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #7A4810. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #10427A below.

Is #10427A good for buttons?

#10427A works well for buttons and highlights, but use white text on #10427A — black text only reaches 2.08:1, below the 4.5:1 needed for normal-size labels.

Is #10427A the same as CSS darkslateblue?

No — #10427A is not the CSS named color darkslateblue, but darkslateblue (#483D8B) is the closest CSS named color.

#10427A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #10427A

Not just a swatch — here's how #10427A works with other colors. Named schemes with #10427A in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #10427A Anchor #141210 Accent #AEAE52 Secondary #222933 Surface #F0EEE3

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 #10427A Anchor #2A2A2E Secondary #6E6E74 Surface #E9E7DA Accent #181F48

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 #10427A Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

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 #10427A Secondary #7F4537 Surface #E1DDC1 Accent #375246 Anchor #57233B

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 #F6F4EF Accent #10427A Secondary #5A6A7F Support #9D8F89 Ink #16140F

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 #10427A 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 21/100

Cool

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

Softness 33/100

Low

Middle-weight — neither delicate nor heavy.

Depth 62/100

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 41/100

Moderate

A faint retro warmth without tipping into sepia.

Luxury 68/100

High

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

Brand distinctiveness 42/100

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 27/100

Low

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

Print safety 78/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #10427A

For UI

For branding

For interior

For fashion

People also use #10427A with

Persian Green Midnight Blue Sepia 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 10.1:1. Use

Subtle surface Use #C5D8EE for cards and hover fills. Tint 80

Avoid beside #101E7A — 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 #10427A 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: #10427A;
  --color-base-rgb: 16 66 122;
  --color-base-oklch: oklch(38.0% 0.108 254.6);
  --color-50: #F1F7FE;
  --color-100: #DAE9FB;
  --color-200: #B7D4F5;
  --color-300: #86B4E9;
  --color-400: #5995D9;
  --color-500: #3776BE;
  --color-600: #315E91;
  --color-700: #284566;
  --color-800: #1E2F43;
  --color-900: #141E29;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  classic-blue: {
    50: '#F1F7FE',
    100: '#DAE9FB',
    200: '#B7D4F5',
    300: '#86B4E9',
    400: '#5995D9',
    500: '#3776BE',
    600: '#315E91',
    700: '#284566',
    800: '#1E2F43',
    900: '#141E29',
  },
}

$base: #10427A;
$base-ink: #FFFFFF;
$base-50: #F1F7FE;
$base-100: #DAE9FB;
$base-200: #B7D4F5;
$base-300: #86B4E9;
$base-400: #5995D9;
$base-500: #3776BE;
$base-600: #315E91;
$base-700: #284566;
$base-800: #1E2F43;
$base-900: #141E29;
$base-hover: #0D3461;
$base-subtle: #A6C5E8;

{
    "color": {
        "base": {
            "value": "#10427A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F7FE",
                "type": "color"
            },
            "100": {
                "value": "#DAE9FB",
                "type": "color"
            },
            "200": {
                "value": "#B7D4F5",
                "type": "color"
            },
            "300": {
                "value": "#86B4E9",
                "type": "color"
            },
            "400": {
                "value": "#5995D9",
                "type": "color"
            },
            "500": {
                "value": "#3776BE",
                "type": "color"
            },
            "600": {
                "value": "#315E91",
                "type": "color"
            },
            "700": {
                "value": "#284566",
                "type": "color"
            },
            "800": {
                "value": "#1E2F43",
                "type": "color"
            },
            "900": {
                "value": "#141E29",
                "type": "color"
            }
        }
    }
}

Palettes built on #10427A

Color Lab

Pairs with #10427A

UI roles & guardrails

In real applications

Scales

Every model

Export