What color is #191B8A?

#191B8A is a dark blue. In RGB it is rgb(25, 27, 138), and in HSL hsl(239, 69%, 32%).

Is #191B8A accessible as text?

On white, #191B8A has a contrast ratio of 13.42:1 (passes WCAG AA for body text); on black it is 1.57:1 (fails). For text placed on #191B8A, use white for the best readability.

What is the closest Tailwind color to #191B8A?

The nearest Tailwind CSS token is indigo-900 (#312C85).

What colors go well with #191B8A?

#191B8A pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #8A8819. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #191B8A below.

Is #191B8A good for buttons?

#191B8A works well for buttons and highlights, but use white text on #191B8A — black text only reaches 1.57:1, below the 4.5:1 needed for normal-size labels.

Is #191B8A the same as CSS midnightblue?

No — #191B8A is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color.

#191B8A Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #191B8A

Not just a swatch — here's how #191B8A works with other colors. Named schemes with #191B8A in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #191B8A Anchor #141210 Accent #DC9659 Secondary #252933 Surface #F3ECE3

Phthalo 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 #191B8A Anchor #2A2A2E Secondary #6E6E74 Surface #EEE5DB Accent #1A0049

Phthalo 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 Phthalo Blue.

Coastal Morning Lead · 5 colors

Lead #191B8A Accent #A5C4C2 Surface #EAD5C0 Secondary #9AA0A1 Anchor #21344A

Phthalo 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 #191B8A Secondary #7F4535 Surface #EED7C2 Accent #365246 Anchor #582239

Phthalo 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 #191B8A Secondary #4B577B Support #9D8F88 Ink #18140F

Phthalo 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 Phthalo Blue carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #191B8A 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 12/100

Cool

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

Softness 23/100

Low

Firm and assertive — carries weight and contrast.

Depth 71/100

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 23/100

Low

Clean and current — no dusty, aged cast.

Luxury 68/100

High

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

Brand distinctiveness 68/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 45/100

Moderate

Workable accent with care around contrast.

Surface fit 19/100

Very low

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

Print safety 70/100

High

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #191B8A

For UI

For branding

For interior

For fashion

People also use #191B8A with

Lapis Lazuli Indigo Olive 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 13.4:1. Use

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

Avoid beside #3D198A — 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 #191B8A 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: #191B8A;
  --color-base-rgb: 25 27 138;
  --color-base-oklch: oklch(32.2% 0.175 270.3);
  --color-50: #F2F2FD;
  --color-100: #DCDCF9;
  --color-200: #BABBF2;
  --color-300: #8B8DE4;
  --color-400: #6062D2;
  --color-500: #3E40B7;
  --color-600: #36378C;
  --color-700: #2C2C63;
  --color-800: #202041;
  --color-900: #151628;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  phthalo-blue: {
    50: '#F2F2FD',
    100: '#DCDCF9',
    200: '#BABBF2',
    300: '#8B8DE4',
    400: '#6062D2',
    500: '#3E40B7',
    600: '#36378C',
    700: '#2C2C63',
    800: '#202041',
    900: '#151628',
  },
}

$base: #191B8A;
$base-ink: #FFFFFF;
$base-50: #F2F2FD;
$base-100: #DCDCF9;
$base-200: #BABBF2;
$base-300: #8B8DE4;
$base-400: #6062D2;
$base-500: #3E40B7;
$base-600: #36378C;
$base-700: #2C2C63;
$base-800: #202041;
$base-900: #151628;
$base-hover: #14166E;
$base-subtle: #B0B1E6;

{
    "color": {
        "base": {
            "value": "#191B8A",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F2F2FD",
                "type": "color"
            },
            "100": {
                "value": "#DCDCF9",
                "type": "color"
            },
            "200": {
                "value": "#BABBF2",
                "type": "color"
            },
            "300": {
                "value": "#8B8DE4",
                "type": "color"
            },
            "400": {
                "value": "#6062D2",
                "type": "color"
            },
            "500": {
                "value": "#3E40B7",
                "type": "color"
            },
            "600": {
                "value": "#36378C",
                "type": "color"
            },
            "700": {
                "value": "#2C2C63",
                "type": "color"
            },
            "800": {
                "value": "#202041",
                "type": "color"
            },
            "900": {
                "value": "#151628",
                "type": "color"
            }
        }
    }
}

Palettes built on #191B8A

Color Lab

Pairs with #191B8A

UI roles & guardrails

In real applications

Scales

Every model

Export