What color is #100F2B?

#100F2B is a very dark blue-violet. In RGB it is rgb(16, 15, 43), and in HSL hsl(242, 48%, 11%).

Is #100F2B accessible as text?

On white, #100F2B has a contrast ratio of 18.66:1 (passes WCAG AA for body text); on black it is 1.13:1 (fails). For text placed on #100F2B, use white for the best readability.

What is the closest Tailwind color to #100F2B?

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

What colors go well with #100F2B?

#100F2B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #292A0F. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #100F2B below.

Is #100F2B good for buttons?

#100F2B works well for buttons and highlights, but use white text on #100F2B — black text only reaches 1.13:1, below the 4.5:1 needed for normal-size labels.

Is #100F2B the same as CSS midnightblue?

No — #100F2B is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#100F2B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #100F2B

Not just a swatch — here's how #100F2B works with other colors. Named schemes with #100F2B in its natural role, and a note on why the supporting colors balance it.

Coastal Morning Lead · 5 colors

Lead #100F2B Accent #A5C4C3 Surface #EAD5BF Secondary #9AA0A1 Anchor #22334A

Graphite 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 #100F2B Secondary #AEB4B8 Surface #F1F2F0 Support #7E92A7 Anchor #2E3236

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

Vintage Leather Lead · 5 colors

Lead #100F2B Secondary #7F4534 Surface #EDD7C2 Accent #365247 Anchor #582238

Graphite plays the worn-leather lead, deepened by saddle brown and an oxblood anchor, softened by aged cream and cooled by a muted forest green.

Luxury Packaging Feature · 5 colors

Feature #100F2B Anchor #141210 Accent #DB9758 Secondary #272833 Surface #F3ECE3

Graphite 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 #100F2B Secondary #33343F Support #9D9088 Ink #18140F

Graphite 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 Graphite carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #100F2B 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 40/100

Neutral

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

Softness 20/100

Very low

Firm and assertive — carries weight and contrast.

Depth 78/100

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 25/100

Low

A faint retro warmth without tipping into sepia.

Luxury 79/100

High

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

Brand distinctiveness 21/100

Low

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

UI accent fit 10/100

Very low

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

Surface fit 56/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 92/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #100F2B

For UI

For branding

For interior

For fashion

People also use #100F2B with

Prussian Blue Graphite Bistre Gainsboro

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 18.7:1. Use

Subtle surface Use #C3C2E1 for cards and hover fills. Tint 80

Avoid beside #180F2A — 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 #100F2B 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: #100F2B;
  --color-base-rgb: 16 15 43;
  --color-base-oklch: oklch(18.8% 0.055 281.3);
  --color-50: #F4F3FB;
  --color-100: #E1E0F5;
  --color-200: #C4C3EA;
  --color-300: #9B99D7;
  --color-400: #7471C1;
  --color-500: #5350A5;
  --color-600: #45437F;
  --color-700: #35345B;
  --color-800: #26253C;
  --color-900: #191825;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  graphite: {
    50: '#F4F3FB',
    100: '#E1E0F5',
    200: '#C4C3EA',
    300: '#9B99D7',
    400: '#7471C1',
    500: '#5350A5',
    600: '#45437F',
    700: '#35345B',
    800: '#26253C',
    900: '#191825',
  },
}

$base: #100F2B;
$base-ink: #FFFFFF;
$base-50: #F4F3FB;
$base-100: #E1E0F5;
$base-200: #C4C3EA;
$base-300: #9B99D7;
$base-400: #7471C1;
$base-500: #5350A5;
$base-600: #45437F;
$base-700: #35345B;
$base-800: #26253C;
$base-900: #191825;
$base-hover: #0C0C21;
$base-subtle: #A4A2D4;

{
    "color": {
        "base": {
            "value": "#100F2B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F4F3FB",
                "type": "color"
            },
            "100": {
                "value": "#E1E0F5",
                "type": "color"
            },
            "200": {
                "value": "#C4C3EA",
                "type": "color"
            },
            "300": {
                "value": "#9B99D7",
                "type": "color"
            },
            "400": {
                "value": "#7471C1",
                "type": "color"
            },
            "500": {
                "value": "#5350A5",
                "type": "color"
            },
            "600": {
                "value": "#45437F",
                "type": "color"
            },
            "700": {
                "value": "#35345B",
                "type": "color"
            },
            "800": {
                "value": "#26253C",
                "type": "color"
            },
            "900": {
                "value": "#191825",
                "type": "color"
            }
        }
    }
}

Palettes built on #100F2B

Color Lab

Pairs with #100F2B

UI roles & guardrails

In real applications

Scales

Every model

Export