What color is #100D65?

#100D65 is a dark, vivid blue. In RGB it is rgb(16, 13, 101), and in HSL hsl(242, 77%, 22%).

Is #100D65 accessible as text?

On white, #100D65 has a contrast ratio of 16.57:1 (passes WCAG AA for body text); on black it is 1.27:1 (fails). For text placed on #100D65, use white for the best readability.

What is the closest Tailwind color to #100D65?

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

What colors go well with #100D65?

#100D65 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #60630D. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #100D65 below.

Is #100D65 good for buttons?

#100D65 works well for buttons and highlights, but use white text on #100D65 — black text only reaches 1.27:1, below the 4.5:1 needed for normal-size labels.

Is #100D65 the same as CSS midnightblue?

No — #100D65 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#100D65 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #100D65

Not just a swatch — here's how #100D65 works with other colors. Named schemes with #100D65 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #100D65 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 #100D65 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #0B002C

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 #100D65 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 #100D65 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 #100D65 Secondary #3C4461 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 #100D65 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 18/100

Cool

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

Softness 21/100

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 25/100

Low

A faint retro warmth without tipping into sepia.

Luxury 76/100

High

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

Brand distinctiveness 55/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 26/100

Low

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

Surface fit 25/100

Low

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

Print safety 76/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #100D65

For UI

For branding

For interior

For fashion

People also use #100D65 with

Classic Blue Russian Violet Dark Olive 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 16.6:1. Use

Subtle surface Use #C3C1ED for cards and hover fills. Tint 80

Avoid beside #2D0D63 — 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 #100D65 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: #100D65;
  --color-base-rgb: 16 13 101;
  --color-base-oklch: oklch(25.2% 0.143 271.0);
  --color-50: #F1F1FE;
  --color-100: #DBDAFB;
  --color-200: #B9B7F5;
  --color-300: #8986E9;
  --color-400: #5E59D9;
  --color-500: #3B37BE;
  --color-600: #343191;
  --color-700: #2A2866;
  --color-800: #1F1E43;
  --color-900: #151429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  midnight-blue: {
    50: '#F1F1FE',
    100: '#DBDAFB',
    200: '#B9B7F5',
    300: '#8986E9',
    400: '#5E59D9',
    500: '#3B37BE',
    600: '#343191',
    700: '#2A2866',
    800: '#1F1E43',
    900: '#151429',
  },
}

$base: #100D65;
$base-ink: #FFFFFF;
$base-50: #F1F1FE;
$base-100: #DBDAFB;
$base-200: #B9B7F5;
$base-300: #8986E9;
$base-400: #5E59D9;
$base-500: #3B37BE;
$base-600: #343191;
$base-700: #2A2866;
$base-800: #1F1E43;
$base-900: #151429;
$base-hover: #0D0A4F;
$base-subtle: #A3A0E6;

{
    "color": {
        "base": {
            "value": "#100D65",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F1F1FE",
                "type": "color"
            },
            "100": {
                "value": "#DBDAFB",
                "type": "color"
            },
            "200": {
                "value": "#B9B7F5",
                "type": "color"
            },
            "300": {
                "value": "#8986E9",
                "type": "color"
            },
            "400": {
                "value": "#5E59D9",
                "type": "color"
            },
            "500": {
                "value": "#3B37BE",
                "type": "color"
            },
            "600": {
                "value": "#343191",
                "type": "color"
            },
            "700": {
                "value": "#2A2866",
                "type": "color"
            },
            "800": {
                "value": "#1F1E43",
                "type": "color"
            },
            "900": {
                "value": "#151429",
                "type": "color"
            }
        }
    }
}

Palettes built on #100D65

Color Lab

Pairs with #100D65

UI roles & guardrails

In real applications

Scales

Every model

Export