What color is #102F9D?

#102F9D is a dark, vivid blue. In RGB it is rgb(16, 47, 157), and in HSL hsl(227, 82%, 34%).

Is #102F9D accessible as text?

On white, #102F9D has a contrast ratio of 10.96:1 (passes WCAG AA for body text); on black it is 1.92:1 (fails). For text placed on #102F9D, use white for the best readability.

What is the closest Tailwind color to #102F9D?

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

What colors go well with #102F9D?

#102F9D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #9E7F10. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #102F9D below.

Is #102F9D good for buttons?

#102F9D works well for buttons and highlights, but use white text on #102F9D — black text only reaches 1.92:1, below the 4.5:1 needed for normal-size labels.

Is #102F9D the same as CSS darkblue?

No — #102F9D is not the CSS named color darkblue, but darkblue (#00008B) is the closest CSS named color.

#102F9D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #102F9D

Not just a swatch — here's how #102F9D works with other colors. Named schemes with #102F9D in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #102F9D 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.

Moody Editorial Color · 5 colors

Color #102F9D Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #1F0D5B

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 #102F9D 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.

Vintage Leather Lead · 5 colors

Lead #102F9D Secondary #7F4536 Surface #EED7C2 Accent #365246 Anchor #58223A

Klein 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 #102F9D Secondary #55668B 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 #102F9D 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 26/100

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 24/100

Low

Clean and current — no dusty, aged cast.

Luxury 63/100

High

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

Brand distinctiveness 70/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 61/100

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 67/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #102F9D

For UI

For branding

For interior

For fashion

People also use #102F9D 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 11.0:1. Use

Subtle surface Use #C9D2F1 for cards and hover fills. Tint 80

Avoid beside #20109E — 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 #102F9D 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: #102F9D;
  --color-base-rgb: 16 47 157;
  --color-base-oklch: oklch(37.1% 0.180 265.2);
  --color-50: #F0F3FE;
  --color-100: #D9E1FC;
  --color-200: #B5C3F8;
  --color-300: #839AED;
  --color-400: #5573DD;
  --color-500: #3251C3;
  --color-600: #2E4494;
  --color-700: #263569;
  --color-800: #1D2544;
  --color-900: #14182A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  klein-blue: {
    50: '#F0F3FE',
    100: '#D9E1FC',
    200: '#B5C3F8',
    300: '#839AED',
    400: '#5573DD',
    500: '#3251C3',
    600: '#2E4494',
    700: '#263569',
    800: '#1D2544',
    900: '#14182A',
  },
}

$base: #102F9D;
$base-ink: #FFFFFF;
$base-50: #F0F3FE;
$base-100: #D9E1FC;
$base-200: #B5C3F8;
$base-300: #839AED;
$base-400: #5573DD;
$base-500: #3251C3;
$base-600: #2E4494;
$base-700: #263569;
$base-800: #1D2544;
$base-900: #14182A;
$base-hover: #0C257E;
$base-subtle: #ADBBEC;

{
    "color": {
        "base": {
            "value": "#102F9D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F3FE",
                "type": "color"
            },
            "100": {
                "value": "#D9E1FC",
                "type": "color"
            },
            "200": {
                "value": "#B5C3F8",
                "type": "color"
            },
            "300": {
                "value": "#839AED",
                "type": "color"
            },
            "400": {
                "value": "#5573DD",
                "type": "color"
            },
            "500": {
                "value": "#3251C3",
                "type": "color"
            },
            "600": {
                "value": "#2E4494",
                "type": "color"
            },
            "700": {
                "value": "#263569",
                "type": "color"
            },
            "800": {
                "value": "#1D2544",
                "type": "color"
            },
            "900": {
                "value": "#14182A",
                "type": "color"
            }
        }
    }
}

Palettes built on #102F9D

Color Lab

Pairs with #102F9D

UI roles & guardrails

In real applications

Scales

Every model

Export