What color is #151B20?

#151B20 is a very dark low-chroma blue-gray with a subtle blue cast. In RGB it is rgb(21, 27, 32), and in HSL hsl(207, 21%, 10%).

Is #151B20 accessible as text?

On white, #151B20 has a contrast ratio of 17.36:1 (passes WCAG AA for body text); on black it is 1.21:1 (fails). For text placed on #151B20, use white for the best readability.

What is the closest Tailwind color to #151B20?

The nearest Tailwind CSS token is zinc-900 (#18181B).

What colors go well with #151B20?

As a neutral, #151B20 pairs cleanly with white, off-white and light grays for text, and sits under accent hues like blue, violet, emerald or warm orange — use it as a dark surface or high-contrast base and let the accent carry the color.

Is #151B20 the same as CSS midnightblue?

No — #151B20 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.

#151B20 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #151B20

Not just a swatch — here's how #151B20 works with other colors. Named schemes with #151B20 in its natural role, and a note on why the supporting colors balance it.

Tech Product Signal · 5 colors

Signal #151B20 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #32383D

Graphite is the vivid signal in this product UI — on a near-black surface with cool white, a slate grey and a lighter tint of Graphite.

Vintage Leather Lead · 5 colors

Lead #151B20 Secondary #7F4438 Surface #E1DDC0 Accent #375245 Anchor #57233C

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 #151B20 Surface #ECEADC Highlight #F4F2E7 Secondary #B2B2A0 Ink #2A2823

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.

Coastal Morning Lead · 5 colors

Lead #151B20 Accent #A5C4C0 Surface #DEDBBF Secondary #9AA0A0 Anchor #20344A

Graphite opens this coastal palette with sea-glass and warm sand alongside it, grounded by driftwood grey and a deep-navy anchor.

Minimal Editorial Surface · 5 colors

Surface #F6F4EF Accent #151B20 Secondary #3B3D3F Support #969386 Ink #16140F

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.

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Color Lab

How #151B20 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 46/100

Neutral

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

Softness 25/100

Low

Firm and assertive — carries weight and contrast.

Depth 73/100

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 18/100

Very low

Clean and current — no dusty, aged cast.

Luxury 72/100

High

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

Brand distinctiveness 5/100

Very low

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

UI accent fit 10/100

Very low

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

Surface fit 67/100

High

Calm enough for large fills — backgrounds, cards, sections.

Print safety 97/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #151B20

For UI

For branding

For interior

For fashion

People also use #151B20 with

Gunmetal Gray Graphite Gainsboro Charcoal

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 17.4:1. Use

Subtle surface Use #CAD2D8 for cards and hover fills. Tint 80

Avoid beside #14161F — 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 #151B20 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: #151B20;
  --color-base-rgb: 21 27 32;
  --color-base-oklch: oklch(21.8% 0.013 243.5);
  --color-50: #F6F8F9;
  --color-100: #E6EBEF;
  --color-200: #CED7DF;
  --color-300: #AAB9C5;
  --color-400: #889BAA;
  --color-500: #687C8D;
  --color-600: #54626E;
  --color-700: #3F4850;
  --color-800: #2B3135;
  --color-900: #1C1F21;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  graphite: {
    50: '#F6F8F9',
    100: '#E6EBEF',
    200: '#CED7DF',
    300: '#AAB9C5',
    400: '#889BAA',
    500: '#687C8D',
    600: '#54626E',
    700: '#3F4850',
    800: '#2B3135',
    900: '#1C1F21',
  },
}

$base: #151B20;
$base-ink: #FFFFFF;
$base-50: #F6F8F9;
$base-100: #E6EBEF;
$base-200: #CED7DF;
$base-300: #AAB9C5;
$base-400: #889BAA;
$base-500: #687C8D;
$base-600: #54626E;
$base-700: #3F4850;
$base-800: #2B3135;
$base-900: #1C1F21;
$base-hover: #101519;
$base-subtle: #AFBBC5;

{
    "color": {
        "base": {
            "value": "#151B20",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F6F8F9",
                "type": "color"
            },
            "100": {
                "value": "#E6EBEF",
                "type": "color"
            },
            "200": {
                "value": "#CED7DF",
                "type": "color"
            },
            "300": {
                "value": "#AAB9C5",
                "type": "color"
            },
            "400": {
                "value": "#889BAA",
                "type": "color"
            },
            "500": {
                "value": "#687C8D",
                "type": "color"
            },
            "600": {
                "value": "#54626E",
                "type": "color"
            },
            "700": {
                "value": "#3F4850",
                "type": "color"
            },
            "800": {
                "value": "#2B3135",
                "type": "color"
            },
            "900": {
                "value": "#1C1F21",
                "type": "color"
            }
        }
    }
}

Palettes built on #151B20

Color Lab

Pairs with #151B20

UI roles & guardrails

In real applications

Scales

Every model

Export