What color is #100B61?

#100B61 is a dark, vivid blue. In RGB it is rgb(16, 11, 97), and in HSL hsl(243, 80%, 21%).

Is #100B61 accessible as text?

On white, #100B61 has a contrast ratio of 16.90:1 (passes WCAG AA for body text); on black it is 1.24:1 (fails). For text placed on #100B61, use white for the best readability.

What is the closest Tailwind color to #100B61?

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

What colors go well with #100B61?

#100B61 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #5C600B. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #100B61 below.

Is #100B61 good for buttons?

#100B61 works well for buttons and highlights, but use white text on #100B61 — black text only reaches 1.24:1, below the 4.5:1 needed for normal-size labels.

Is #100B61 the same as CSS midnightblue?

No — #100B61 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#100B61 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #100B61

Not just a swatch — here's how #100B61 works with other colors. Named schemes with #100B61 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #100B61 Anchor #141210 Accent #DC9659 Secondary #252833 Surface #F3ECE3

Midnight Blue 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 #100B61 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #0A0029

Midnight Blue 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 Midnight Blue.

Coastal Morning Lead · 5 colors

Lead #100B61 Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Midnight Blue 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 #100B61 Secondary #7F4535 Surface #EED7C2 Accent #365247 Anchor #582239

Midnight 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 #F8F4EF Accent #100B61 Secondary #3A425E Support #9D8F88 Ink #18140F

Midnight 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 Midnight Blue carrying the quiet middle.

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Color Lab

How #100B61 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 19/100

Cool

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

Softness 20/100

Low

Firm and assertive — carries weight and contrast.

Depth 77/100

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 26/100

Low

A faint retro warmth without tipping into sepia.

Luxury 77/100

High

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

Brand distinctiveness 54/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 24/100

Low

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

Surface fit 27/100

Low

Too saturated or mid-toned for big areas — keep it to accents.

Print safety 77/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #100B61

For UI

For branding

For interior

For fashion

People also use #100B61 with

Classic 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 16.9:1. Use

Subtle surface Use #C2C0EE for cards and hover fills. Tint 80

Avoid beside #2C0B60 — 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 #100B61 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: #100B61;
  --color-base-rgb: 16 11 97;
  --color-base-oklch: oklch(24.5% 0.140 271.7);
  --color-50: #F1F1FE;
  --color-100: #DBD9FC;
  --color-200: #B9B6F7;
  --color-300: #8984EB;
  --color-400: #5D57DB;
  --color-500: #3B34C1;
  --color-600: #342F93;
  --color-700: #2A2768;
  --color-800: #1F1D44;
  --color-900: #151429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  midnight-blue: {
    50: '#F1F1FE',
    100: '#DBD9FC',
    200: '#B9B6F7',
    300: '#8984EB',
    400: '#5D57DB',
    500: '#3B34C1',
    600: '#342F93',
    700: '#2A2768',
    800: '#1F1D44',
    900: '#151429',
  },
}

$base: #100B61;
$base-ink: #FFFFFF;
$base-50: #F1F1FE;
$base-100: #DBD9FC;
$base-200: #B9B6F7;
$base-300: #8984EB;
$base-400: #5D57DB;
$base-500: #3B34C1;
$base-600: #342F93;
$base-700: #2A2768;
$base-800: #1F1D44;
$base-900: #151429;
$base-hover: #0C094D;
$base-subtle: #A19EE7;

{
    "color": {
        "base": {
            "value": "#100B61",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F1FE",
                "type": "color"
            },
            "100": {
                "value": "#DBD9FC",
                "type": "color"
            },
            "200": {
                "value": "#B9B6F7",
                "type": "color"
            },
            "300": {
                "value": "#8984EB",
                "type": "color"
            },
            "400": {
                "value": "#5D57DB",
                "type": "color"
            },
            "500": {
                "value": "#3B34C1",
                "type": "color"
            },
            "600": {
                "value": "#342F93",
                "type": "color"
            },
            "700": {
                "value": "#2A2768",
                "type": "color"
            },
            "800": {
                "value": "#1F1D44",
                "type": "color"
            },
            "900": {
                "value": "#151429",
                "type": "color"
            }
        }
    }
}

Palettes built on #100B61

Color Lab

Pairs with #100B61

UI roles & guardrails

In real applications

Scales

Every model

Export