What color is #100657?

#100657 is a dark, vivid indigo. In RGB it is rgb(16, 6, 87), and in HSL hsl(247, 87%, 18%).

Is #100657 accessible as text?

On white, #100657 has a contrast ratio of 17.71:1 (passes WCAG AA for body text); on black it is 1.19:1 (fails). For text placed on #100657, use white for the best readability.

What is the closest Tailwind color to #100657?

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

What colors go well with #100657?

#100657 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #4D5606. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #100657 below.

Is #100657 good for buttons?

#100657 works well for buttons and highlights, but use white text on #100657 — black text only reaches 1.19:1, below the 4.5:1 needed for normal-size labels.

Is #100657 the same as CSS midnightblue?

No — #100657 is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#100657 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #100657

Not just a swatch — here's how #100657 works with other colors. Named schemes with #100657 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #100657 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 #100657 Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #070021

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 #100657 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 #100657 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 #100657 Secondary #373D57 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.

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Color Lab

How #100657 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 22/100

Cool

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

Softness 19/100

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 26/100

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 51/100

Moderate

Recognisable but shares space with nearby hues.

UI accent fit 20/100

Very low

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

Surface fit 30/100

Low

Usable as a tinted surface in measured doses.

Print safety 79/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #100657

For UI

For branding

For interior

For fashion

People also use #100657 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 17.7:1. Use

Subtle surface Use #C1BBEF for cards and hover fills. Tint 80

Avoid beside #2A0656 — 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 #100657 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: #100657;
  --color-base-rgb: 16 6 87;
  --color-base-oklch: oklch(22.5% 0.131 273.7);
  --color-50: #F2F0FE;
  --color-100: #DCD8FD;
  --color-200: #BBB3FA;
  --color-300: #8D7FF0;
  --color-400: #6251E1;
  --color-500: #402EC7;
  --color-600: #372B97;
  --color-700: #2C246B;
  --color-800: #201C45;
  --color-900: #16132A;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  navy: {
    50: '#F2F0FE',
    100: '#DCD8FD',
    200: '#BBB3FA',
    300: '#8D7FF0',
    400: '#6251E1',
    500: '#402EC7',
    600: '#372B97',
    700: '#2C246B',
    800: '#201C45',
    900: '#16132A',
  },
}

$base: #100657;
$base-ink: #FFFFFF;
$base-50: #F2F0FE;
$base-100: #DCD8FD;
$base-200: #BBB3FA;
$base-300: #8D7FF0;
$base-400: #6251E1;
$base-500: #402EC7;
$base-600: #372B97;
$base-700: #2C246B;
$base-800: #201C45;
$base-900: #16132A;
$base-hover: #0C0545;
$base-subtle: #A097EA;

{
    "color": {
        "base": {
            "value": "#100657",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F0FE",
                "type": "color"
            },
            "100": {
                "value": "#DCD8FD",
                "type": "color"
            },
            "200": {
                "value": "#BBB3FA",
                "type": "color"
            },
            "300": {
                "value": "#8D7FF0",
                "type": "color"
            },
            "400": {
                "value": "#6251E1",
                "type": "color"
            },
            "500": {
                "value": "#402EC7",
                "type": "color"
            },
            "600": {
                "value": "#372B97",
                "type": "color"
            },
            "700": {
                "value": "#2C246B",
                "type": "color"
            },
            "800": {
                "value": "#201C45",
                "type": "color"
            },
            "900": {
                "value": "#16132A",
                "type": "color"
            }
        }
    }
}

Palettes built on #100657

Color Lab

Pairs with #100657

UI roles & guardrails

In real applications

Scales

Every model

Export