What color is #102D40?

#102D40 is a very dark cyan-blue. In RGB it is rgb(16, 45, 64), and in HSL hsl(204, 60%, 16%).

Is #102D40 accessible as text?

On white, #102D40 has a contrast ratio of 14.27:1 (passes WCAG AA for body text); on black it is 1.47:1 (fails). For text placed on #102D40, use white for the best readability.

What is the closest Tailwind color to #102D40?

The nearest Tailwind CSS token is sky-950 (#052F4A).

What colors go well with #102D40?

#102D40 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #412410. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #102D40 below.

Is #102D40 good for buttons?

#102D40 works well for buttons and highlights, but use white text on #102D40 — black text only reaches 1.47:1, below the 4.5:1 needed for normal-size labels.

Is #102D40 the same as CSS midnightblue?

No — #102D40 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#102D40 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #102D40

Not just a swatch — here's how #102D40 works with other colors. Named schemes with #102D40 in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #102D40 Accent #A5C4C0 Surface #DEDABF Secondary #9AA0A0 Anchor #1F344A

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

Nordic Calm Accent · 5 colors

Accent #102D40 Secondary #AEB4B8 Surface #F1F2F0 Support #7C93A6 Anchor #2E3236

Prussian Blue keeps this Nordic scheme quiet — cool greys and a soft white around it, a muted-blue support and a charcoal anchor.

Tech Product Signal · 5 colors

Signal #102D40 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #334C5F

Prussian 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 Prussian Blue.

Vintage Leather Lead · 5 colors

Lead #102D40 Secondary #7F4439 Surface #E2DDC0 Accent #385245 Anchor #57233C

Prussian 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 #102D40 Secondary #465057 Support #969386 Ink #16140F

Prussian 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 Prussian Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #102D40 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 36/100

Cool

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

Softness 29/100

Low

Firm and assertive — carries weight and contrast.

Depth 68/100

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 29/100

Low

A faint retro warmth without tipping into sepia.

Luxury 71/100

High

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

Brand distinctiveness 19/100

Very low

Quiet and neutral — a supporting tone, not a signature.

UI accent fit 25/100

Low

Weak as an action color — too pale, too dark or too muted to signal.

Surface fit 52/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 88/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #102D40

For UI

For branding

For interior

For fashion

People also use #102D40 with

Hunter Green Navy Bistre Platinum 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 14.3:1. Use

Subtle surface Use #C2D8E7 for cards and hover fills. Tint 80

Avoid beside #101D41 — 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 #102D40 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: #102D40;
  --color-base-rgb: 16 45 64;
  --color-base-oklch: oklch(28.5% 0.049 240.3);
  --color-50: #F2F8FC;
  --color-100: #DEEDF8;
  --color-200: #BEDBEF;
  --color-300: #91BFDE;
  --color-400: #67A3CB;
  --color-500: #4685AF;
  --color-600: #3C6886;
  --color-700: #2F4C60;
  --color-800: #22333F;
  --color-900: #162027;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  prussian-blue: {
    50: '#F2F8FC',
    100: '#DEEDF8',
    200: '#BEDBEF',
    300: '#91BFDE',
    400: '#67A3CB',
    500: '#4685AF',
    600: '#3C6886',
    700: '#2F4C60',
    800: '#22333F',
    900: '#162027',
  },
}

$base: #102D40;
$base-ink: #FFFFFF;
$base-50: #F2F8FC;
$base-100: #DEEDF8;
$base-200: #BEDBEF;
$base-300: #91BFDE;
$base-400: #67A3CB;
$base-500: #4685AF;
$base-600: #3C6886;
$base-700: #2F4C60;
$base-800: #22333F;
$base-900: #162027;
$base-hover: #0D2534;
$base-subtle: #A1C5DC;

{
    "color": {
        "base": {
            "value": "#102D40",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F8FC",
                "type": "color"
            },
            "100": {
                "value": "#DEEDF8",
                "type": "color"
            },
            "200": {
                "value": "#BEDBEF",
                "type": "color"
            },
            "300": {
                "value": "#91BFDE",
                "type": "color"
            },
            "400": {
                "value": "#67A3CB",
                "type": "color"
            },
            "500": {
                "value": "#4685AF",
                "type": "color"
            },
            "600": {
                "value": "#3C6886",
                "type": "color"
            },
            "700": {
                "value": "#2F4C60",
                "type": "color"
            },
            "800": {
                "value": "#22333F",
                "type": "color"
            },
            "900": {
                "value": "#162027",
                "type": "color"
            }
        }
    }
}