What color is #100B4D?

#100B4D is a very dark, vivid blue-violet. In RGB it is rgb(16, 11, 77), and in HSL hsl(245, 75%, 17%).

Is #100B4D accessible as text?

On white, #100B4D has a contrast ratio of 17.84:1 (passes WCAG AA for body text); on black it is 1.18:1 (fails). For text placed on #100B4D, use white for the best readability.

What is the closest Tailwind color to #100B4D?

The nearest Tailwind CSS token is indigo-950 (#1E1A4D).

What colors go well with #100B4D?

#100B4D pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #464C0B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #100B4D below.

Is #100B4D good for buttons?

#100B4D works well for buttons and highlights, but use white text on #100B4D — black text only reaches 1.18:1, below the 4.5:1 needed for normal-size labels.

Is #100B4D the same as CSS midnightblue?

No — #100B4D is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#100B4D Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #100B4D

Not just a swatch — here's how #100B4D works with other colors. Named schemes with #100B4D in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #100B4D Anchor #141210 Accent #DC9659 Secondary #262833 Surface #F3ECE3

Navy 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 #100B4D Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #06001B

Navy 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 Navy.

Coastal Morning Lead · 5 colors

Lead #100B4D Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Navy 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 #100B4D Secondary #7F4535 Surface #EED7C2 Accent #365247 Anchor #582239

Navy 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 #100B4D Secondary #363B52 Support #9D9088 Ink #18140F

Navy 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 Navy carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #100B4D 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 26/100

Cool

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

Softness 20/100

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 29/100

Low

A faint retro warmth without tipping into sepia.

Luxury 82/100

Very high

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

Brand distinctiveness 44/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 18/100

Very low

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

Surface fit 36/100

Low

Usable as a tinted surface in measured doses.

Print safety 82/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #100B4D

For UI

For branding

For interior

For fashion

People also use #100B4D with

Yale Blue Russian Violet Army Green Gainsboro Prussian Blue

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 17.8:1. Use

Subtle surface Use #C2BEEC for cards and hover fills. Tint 80

Avoid beside #260B4C — 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 #100B4D 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: #100B4D;
  --color-base-rgb: 16 11 77;
  --color-base-oklch: oklch(21.8% 0.114 274.9);
  --color-50: #F2F1FE;
  --color-100: #DDDAFB;
  --color-200: #BDB8F5;
  --color-300: #8F87E8;
  --color-400: #655BD7;
  --color-500: #4338BC;
  --color-600: #3A3290;
  --color-700: #2E2966;
  --color-800: #211E42;
  --color-900: #161429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  navy: {
    50: '#F2F1FE',
    100: '#DDDAFB',
    200: '#BDB8F5',
    300: '#8F87E8',
    400: '#655BD7',
    500: '#4338BC',
    600: '#3A3290',
    700: '#2E2966',
    800: '#211E42',
    900: '#161429',
  },
}

$base: #100B4D;
$base-ink: #FFFFFF;
$base-50: #F2F1FE;
$base-100: #DDDAFB;
$base-200: #BDB8F5;
$base-300: #8F87E8;
$base-400: #655BD7;
$base-500: #4338BC;
$base-600: #3A3290;
$base-700: #2E2966;
$base-800: #211E42;
$base-900: #161429;
$base-hover: #0D093D;
$base-subtle: #A19BE4;

{
    "color": {
        "base": {
            "value": "#100B4D",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F1FE",
                "type": "color"
            },
            "100": {
                "value": "#DDDAFB",
                "type": "color"
            },
            "200": {
                "value": "#BDB8F5",
                "type": "color"
            },
            "300": {
                "value": "#8F87E8",
                "type": "color"
            },
            "400": {
                "value": "#655BD7",
                "type": "color"
            },
            "500": {
                "value": "#4338BC",
                "type": "color"
            },
            "600": {
                "value": "#3A3290",
                "type": "color"
            },
            "700": {
                "value": "#2E2966",
                "type": "color"
            },
            "800": {
                "value": "#211E42",
                "type": "color"
            },
            "900": {
                "value": "#161429",
                "type": "color"
            }
        }
    }
}

Palettes built on #100B4D

Color Lab

Pairs with #100B4D

UI roles & guardrails

In real applications

Scales

Every model

Export