What color is #102EA5?

#102EA5 is a dark, vivid blue. In RGB it is rgb(16, 46, 165), and in HSL hsl(228, 82%, 35%).

Is #102EA5 accessible as text?

On white, #102EA5 has a contrast ratio of 10.74:1 (passes WCAG AA for body text); on black it is 1.96:1 (fails). For text placed on #102EA5, use white for the best readability.

What is the closest Tailwind color to #102EA5?

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

What colors go well with #102EA5?

#102EA5 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #A28510. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #102EA5 below.

Is #102EA5 good for buttons?

#102EA5 works well for buttons and highlights, but use white text on #102EA5 — black text only reaches 1.96:1, below the 4.5:1 needed for normal-size labels.

Is #102EA5 the same as CSS mediumblue?

No — #102EA5 is not the CSS named color mediumblue, but mediumblue (#0000CD) is the closest CSS named color.

#102EA5 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #102EA5

Not just a swatch — here's how #102EA5 works with other colors. Named schemes with #102EA5 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #102EA5 Anchor #141210 Accent #DD965A Secondary #242933 Surface #F4ECE3

Klein 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.

Tech Product Signal · 5 colors

Signal #102EA5 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #3259C3

Klein 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 Klein Blue.

Moody Editorial Color · 5 colors

Color #102EA5 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #210C60

Klein 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 Klein Blue.

Coastal Morning Lead · 5 colors

Lead #102EA5 Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Klein Blue opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #102EA5 Secondary #56688F Support #9D8F88 Ink #18140F

Klein 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 Klein Blue carrying the quiet middle.

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Color Lab

How #102EA5 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 9/100

Cool

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

Softness 25/100

Low

Firm and assertive — carries weight and contrast.

Depth 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 21/100

Low

Clean and current — no dusty, aged cast.

Luxury 62/100

High

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

Brand distinctiveness 74/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 60/100

High

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

Surface fit 15/100

Very low

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

Print safety 65/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #102EA5

For UI

For branding

For interior

For fashion

People also use #102EA5 with

Bondi Blue Indigo 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 10.7:1. Use

Subtle surface Use #CAD2F1 for cards and hover fills. Tint 80

Avoid beside #2410A2 — 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 #102EA5 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: #102EA5;
  --color-base-rgb: 16 46 165;
  --color-base-oklch: oklch(37.8% 0.192 265.4);
  --color-50: #F0F3FE;
  --color-100: #D9E0FC;
  --color-200: #B5C2F8;
  --color-300: #8398ED;
  --color-400: #5570DD;
  --color-500: #324FC3;
  --color-600: #2E4294;
  --color-700: #263469;
  --color-800: #1D2544;
  --color-900: #14182A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  klein-blue: {
    50: '#F0F3FE',
    100: '#D9E0FC',
    200: '#B5C2F8',
    300: '#8398ED',
    400: '#5570DD',
    500: '#324FC3',
    600: '#2E4294',
    700: '#263469',
    800: '#1D2544',
    900: '#14182A',
  },
}

$base: #102EA5;
$base-ink: #FFFFFF;
$base-50: #F0F3FE;
$base-100: #D9E0FC;
$base-200: #B5C2F8;
$base-300: #8398ED;
$base-400: #5570DD;
$base-500: #324FC3;
$base-600: #2E4294;
$base-700: #263469;
$base-800: #1D2544;
$base-900: #14182A;
$base-hover: #0D2482;
$base-subtle: #AEBBEC;

{
    "color": {
        "base": {
            "value": "#102EA5",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F3FE",
                "type": "color"
            },
            "100": {
                "value": "#D9E0FC",
                "type": "color"
            },
            "200": {
                "value": "#B5C2F8",
                "type": "color"
            },
            "300": {
                "value": "#8398ED",
                "type": "color"
            },
            "400": {
                "value": "#5570DD",
                "type": "color"
            },
            "500": {
                "value": "#324FC3",
                "type": "color"
            },
            "600": {
                "value": "#2E4294",
                "type": "color"
            },
            "700": {
                "value": "#263469",
                "type": "color"
            },
            "800": {
                "value": "#1D2544",
                "type": "color"
            },
            "900": {
                "value": "#14182A",
                "type": "color"
            }
        }
    }
}

Palettes built on #102EA5

Color Lab

Pairs with #102EA5

UI roles & guardrails

In real applications

Scales

Every model

Export