What color is #1B152B?

#1B152B is a very dark, muted indigo. In RGB it is rgb(27, 21, 43), and in HSL hsl(256, 34%, 13%).

Is #1B152B accessible as text?

On white, #1B152B has a contrast ratio of 17.67:1 (passes WCAG AA for body text); on black it is 1.19:1 (fails). For text placed on #1B152B, use white for the best readability.

What is the closest Tailwind color to #1B152B?

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

What colors go well with #1B152B?

#1B152B pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #262C16. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #1B152B below.

Is #1B152B good for buttons?

#1B152B works well for buttons and highlights, but use white text on #1B152B — black text only reaches 1.19:1, below the 4.5:1 needed for normal-size labels.

Is #1B152B the same as CSS midnightblue?

No — #1B152B is not the CSS named color midnightblue, but midnightblue (#191970) is the closest CSS named color by perceptual color distance — it sits in a different color family, so treat it as a rough reference, not a match.

#1B152B Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #1B152B

Not just a swatch — here's how #1B152B works with other colors. Named schemes with #1B152B in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #1B152B Secondary #7E4632 Surface #EDD8C2 Accent #355248 Anchor #582237

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.

Japanese Sand Base · 5 colors

Base #1B152B Surface #F2E8DD Highlight #F8F0E7 Secondary #BDADA1 Ink #2C2724

Graphite sets a calm, sun-bleached base here, wrapped in bone and paper off-whites and a soft greige, with a single ink accent for wabi-sabi restraint.

Luxury Packaging Feature · 5 colors

Feature #1B152B Anchor #141210 Accent #DA9856 Secondary #292732 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 #1B152B Secondary #3C3A43 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.

Berry & Cream Lead · 5 colors

Lead #1B152B Surface #F5E5D7 Anchor #5C2141 Accent #E5C2C8 Secondary #332B2F

Graphite sits between cream and a deep berry here, softened by a blush accent and grounded by charcoal.

Build a working theme in the generator →

Color Lab

How #1B152B 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 45/100

Neutral

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

Softness 23/100

Low

Firm and assertive — carries weight and contrast.

Depth 75/100

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 27/100

Low

A faint retro warmth without tipping into sepia.

Luxury 75/100

High

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

Brand distinctiveness 17/100

Very low

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

UI accent fit 12/100

Very low

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

Surface fit 58/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 94/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #1B152B

For UI

For branding

For interior

For fashion

People also use #1B152B with

Prussian Blue Graphite Bistre Gainsboro Russian Violet

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 #CEC8DD for cards and hover fills. Tint 80

Avoid beside #23162C — 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 #1B152B 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: #1B152B;
  --color-base-rgb: 27 21 43;
  --color-base-oklch: oklch(21.5% 0.043 295.1);
  --color-50: #F6F4FA;
  --color-100: #E7E3F2;
  --color-200: #D0C8E4;
  --color-300: #ADA2CE;
  --color-400: #8C7DB5;
  --color-500: #6C5C98;
  --color-600: #574C76;
  --color-700: #413A55;
  --color-800: #2D2839;
  --color-900: #1C1A23;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  graphite: {
    50: '#F6F4FA',
    100: '#E7E3F2',
    200: '#D0C8E4',
    300: '#ADA2CE',
    400: '#8C7DB5',
    500: '#6C5C98',
    600: '#574C76',
    700: '#413A55',
    800: '#2D2839',
    900: '#1C1A23',
  },
}

$base: #1B152B;
$base-ink: #FFFFFF;
$base-50: #F6F4FA;
$base-100: #E7E3F2;
$base-200: #D0C8E4;
$base-300: #ADA2CE;
$base-400: #8C7DB5;
$base-500: #6C5C98;
$base-600: #574C76;
$base-700: #413A55;
$base-800: #2D2839;
$base-900: #1C1A23;
$base-hover: #161224;
$base-subtle: #B4ABCE;

{
    "color": {
        "base": {
            "value": "#1B152B",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F4FA",
                "type": "color"
            },
            "100": {
                "value": "#E7E3F2",
                "type": "color"
            },
            "200": {
                "value": "#D0C8E4",
                "type": "color"
            },
            "300": {
                "value": "#ADA2CE",
                "type": "color"
            },
            "400": {
                "value": "#8C7DB5",
                "type": "color"
            },
            "500": {
                "value": "#6C5C98",
                "type": "color"
            },
            "600": {
                "value": "#574C76",
                "type": "color"
            },
            "700": {
                "value": "#413A55",
                "type": "color"
            },
            "800": {
                "value": "#2D2839",
                "type": "color"
            },
            "900": {
                "value": "#1C1A23",
                "type": "color"
            }
        }
    }
}

Palettes built on #1B152B

Color Lab

Pairs with #1B152B

UI roles & guardrails

In real applications

Scales

Every model

Export