What color is #100B1E?

#100B1E is a very dark indigo. In RGB it is rgb(16, 11, 30), and in HSL hsl(256, 46%, 8%).

Is #100B1E accessible as text?

On white, #100B1E has a contrast ratio of 19.29:1 (passes WCAG AA for body text); on black it is 1.09:1 (fails). For text placed on #100B1E, use white for the best readability.

What is the closest Tailwind color to #100B1E?

The nearest Tailwind CSS token is mauve-950 (#0C090C).

What colors go well with #100B1E?

#100B1E pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #191E0B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #100B1E below.

Is #100B1E good for buttons?

#100B1E works well for buttons and highlights, but use white text on #100B1E — black text only reaches 1.09:1, below the 4.5:1 needed for normal-size labels.

Is #100B1E the same as CSS midnightblue?

No — #100B1E 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.

#100B1E Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #100B1E

Not just a swatch — here's how #100B1E works with other colors. Named schemes with #100B1E in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #100B1E Secondary #7E4632 Surface #EDD8C2 Accent #355248 Anchor #582237

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.

Japanese Sand Base · 5 colors

Base #100B1E Surface #F2E8DD Highlight #F8F0E7 Secondary #BDADA1 Ink #2C2724

Jet Black sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Luxury Packaging Feature · 5 colors

Feature #100B1E Anchor #141210 Accent #DA9856 Secondary #292732 Surface #F3ECE3

Jet Black 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.

Minimal Editorial Surface · 5 colors

Surface #F8F4EF Accent #100B1E Secondary #302F36 Support #9D9088 Ink #18140F

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.

Berry & Cream Lead · 5 colors

Lead #100B1E Surface #F5E5D7 Anchor #5C2141 Accent #E5C2C8 Secondary #332B2F

Jet Black sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Build a working theme in the generator →

Color Lab

How #100B1E 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 45/100

Neutral

Balanced temperature — flexible, sits between warm and cool schemes.

Softness 18/100

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 22/100

Low

Clean and current — no dusty, aged cast.

Luxury 79/100

High

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

Brand distinctiveness 15/100

Very low

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

UI accent fit 7/100

Very low

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

Surface fit 62/100

High

Calm enough for large fills — backgrounds, cards, sections.

Print safety 95/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #100B1E

For UI

For branding

For interior

For fashion

People also use #100B1E with

Navy Jet Black Graphite Gainsboro Russian Violet

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 19.3:1. Use

Subtle surface Use #C9C1E0 for cards and hover fills. Tint 80

Avoid beside #160B1E — 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 #100B1E at work across the surfaces designers actually ship.

Website / UI

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Dashboard

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$48.2k ▲ 12%

Brand

AVELINE

Studio

Poster

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NIGHT
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Packaging

BLOOM

Botanical Wash

250 ml

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Export

:root {
  --color-base: #100B1E;
  --color-base-rgb: 16 11 30;
  --color-base-oklch: oklch(16.8% 0.039 293.9);
  --color-50: #F6F3FB;
  --color-100: #E6E1F5;
  --color-200: #CDC4E9;
  --color-300: #AA9AD5;
  --color-400: #8773BF;
  --color-500: #6852A3;
  --color-600: #54447E;
  --color-700: #3F355A;
  --color-800: #2B253C;
  --color-900: #1C1825;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F6F3FB',
    100: '#E6E1F5',
    200: '#CDC4E9',
    300: '#AA9AD5',
    400: '#8773BF',
    500: '#6852A3',
    600: '#54447E',
    700: '#3F355A',
    800: '#2B253C',
    900: '#1C1825',
  },
}

$base: #100B1E;
$base-ink: #FFFFFF;
$base-50: #F6F3FB;
$base-100: #E6E1F5;
$base-200: #CDC4E9;
$base-300: #AA9AD5;
$base-400: #8773BF;
$base-500: #6852A3;
$base-600: #54447E;
$base-700: #3F355A;
$base-800: #2B253C;
$base-900: #1C1825;
$base-hover: #0D0918;
$base-subtle: #ADA0D1;

{
    "color": {
        "base": {
            "value": "#100B1E",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F3FB",
                "type": "color"
            },
            "100": {
                "value": "#E6E1F5",
                "type": "color"
            },
            "200": {
                "value": "#CDC4E9",
                "type": "color"
            },
            "300": {
                "value": "#AA9AD5",
                "type": "color"
            },
            "400": {
                "value": "#8773BF",
                "type": "color"
            },
            "500": {
                "value": "#6852A3",
                "type": "color"
            },
            "600": {
                "value": "#54447E",
                "type": "color"
            },
            "700": {
                "value": "#3F355A",
                "type": "color"
            },
            "800": {
                "value": "#2B253C",
                "type": "color"
            },
            "900": {
                "value": "#1C1825",
                "type": "color"
            }
        }
    }
}

Palettes built on #100B1E

Color Lab

Pairs with #100B1E

UI roles & guardrails

In real applications

Scales

Every model

Export