What color is #02102B?

#02102B is a very dark, vivid blue. In RGB it is rgb(2, 16, 43), and in HSL hsl(220, 91%, 9%).

Is #02102B accessible as text?

On white, #02102B has a contrast ratio of 18.89:1 (passes WCAG AA for body text); on black it is 1.11:1 (fails). For text placed on #02102B, use white for the best readability.

What is the closest Tailwind color to #02102B?

The nearest Tailwind CSS token is mauve-900 (#1D161E).

What colors go well with #02102B?

#02102B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #2C1E02. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #02102B below.

Is #02102B good for buttons?

#02102B works well for buttons and highlights, but use white text on #02102B — black text only reaches 1.11:1, below the 4.5:1 needed for normal-size labels.

Is #02102B the same as CSS midnightblue?

No — #02102B is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#02102B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #02102B

Not just a swatch — here's how #02102B works with other colors. Named schemes with #02102B in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #02102B Accent #A5C4C1 Surface #DDDBBF Secondary #9AA0A1 Anchor #20344A

Jet Black 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 #02102B Secondary #AEB4B8 Surface #F1F2F0 Support #7D93A6 Anchor #2E3236

Jet Black 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 #02102B Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #1D2E48

Jet Black is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Jet Black.

Vintage Leather Lead · 5 colors

Lead #02102B Secondary #7F4536 Surface #E1DDC1 Accent #375246 Anchor #57223A

Jet Black 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 #02102B Secondary #2C333D Support #9D8F89 Ink #16140F

Jet Black 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 Jet Black carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #02102B 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 35/100

Cool

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

Softness 19/100

Very low

Firm and assertive — carries weight and contrast.

Depth 79/100

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 23/100

Low

Clean and current — no dusty, aged cast.

Luxury 80/100

High

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

Brand distinctiveness 23/100

Low

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

UI accent fit 9/100

Very low

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

Surface fit 55/100

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 #02102B

For UI

For branding

For interior

For fashion

People also use #02102B with

Dark Slate Gray Jet Black Graphite 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 18.9:1. Use

Subtle surface Use #B2C6EF for cards and hover fills. Tint 80

Avoid beside #02022C — 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 #02102B 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: #02102B;
  --color-base-rgb: 2 16 43;
  --color-base-oklch: oklch(17.9% 0.059 259.2);
  --color-50: #F0F5FE;
  --color-100: #D8E4FD;
  --color-200: #B1CAFB;
  --color-300: #7DA4F2;
  --color-400: #4E80E4;
  --color-500: #2A60CB;
  --color-600: #284E9A;
  --color-700: #233B6C;
  --color-800: #1B2946;
  --color-900: #121A2B;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F0F5FE',
    100: '#D8E4FD',
    200: '#B1CAFB',
    300: '#7DA4F2',
    400: '#4E80E4',
    500: '#2A60CB',
    600: '#284E9A',
    700: '#233B6C',
    800: '#1B2946',
    900: '#121A2B',
  },
}

$base: #02102B;
$base-ink: #FFFFFF;
$base-50: #F0F5FE;
$base-100: #D8E4FD;
$base-200: #B1CAFB;
$base-300: #7DA4F2;
$base-400: #4E80E4;
$base-500: #2A60CB;
$base-600: #284E9A;
$base-700: #233B6C;
$base-800: #1B2946;
$base-900: #121A2B;
$base-hover: #020D23;
$base-subtle: #89A9EA;

{
    "color": {
        "base": {
            "value": "#02102B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F5FE",
                "type": "color"
            },
            "100": {
                "value": "#D8E4FD",
                "type": "color"
            },
            "200": {
                "value": "#B1CAFB",
                "type": "color"
            },
            "300": {
                "value": "#7DA4F2",
                "type": "color"
            },
            "400": {
                "value": "#4E80E4",
                "type": "color"
            },
            "500": {
                "value": "#2A60CB",
                "type": "color"
            },
            "600": {
                "value": "#284E9A",
                "type": "color"
            },
            "700": {
                "value": "#233B6C",
                "type": "color"
            },
            "800": {
                "value": "#1B2946",
                "type": "color"
            },
            "900": {
                "value": "#121A2B",
                "type": "color"
            }
        }
    }
}

Palettes built on #02102B

Color Lab

Pairs with #02102B

UI roles & guardrails

In real applications

Scales

Every model

Export