What color is #150421?

#150421 is a very dark, vivid violet. In RGB it is rgb(21, 4, 33), and in HSL hsl(275, 78%, 7%).

Is #150421 accessible as text?

On white, #150421 has a contrast ratio of 19.60:1 (passes WCAG AA for body text); on black it is 1.07:1 (fails). For text placed on #150421, use white for the best readability.

What is the closest Tailwind color to #150421?

The nearest Tailwind CSS token is mauve-950 (#0C090C).

What colors go well with #150421?

#150421 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #102004. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #150421 below.

Is #150421 good for buttons?

#150421 works well for buttons and highlights, but use white text on #150421 — black text only reaches 1.07:1, below the 4.5:1 needed for normal-size labels.

Is #150421 the same as CSS midnightblue?

No — #150421 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.

#150421 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #150421

Not just a swatch — here's how #150421 works with other colors. Named schemes with #150421 in its natural role, and a note on why the supporting colors balance it.

Vintage Leather Lead · 5 colors

Lead #150421 Secondary #7E4630 Surface #EDD8C1 Accent #355249 Anchor #592236

Jet Black 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 #150421 Surface #F1E8DC Highlight #F8F0E7 Secondary #BDADA1 Ink #2C2723

Jet Black 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 #150421 Anchor #141210 Accent #D99955 Secondary #2C2631 Surface #F3ECE3

Jet Black 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 #150421 Secondary #312B36 Support #9C9088 Ink #18140F

Jet Black 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 Jet Black carrying the quiet middle.

Berry & Cream Lead · 5 colors

Lead #150421 Surface #F5E6D7 Anchor #5C213F Accent #E5C2C7 Secondary #332B2F

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

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Color Lab

How #150421 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 17/100

Very low

Firm and assertive — carries weight and contrast.

Depth 81/100

Very 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 82/100

Very high

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

Brand distinctiveness 24/100

Low

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

UI accent fit 7/100

Very low

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

Surface fit 56/100

Moderate

Usable as a tinted surface in measured doses.

Print safety 93/100

Very high

Reproduces faithfully in CMYK — safe for packaging and print.

Pairs with #150421

For UI

For branding

For interior

For fashion

People also use #150421 with

Navy Jet Black Graphite Gainsboro Onyx

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 19.6:1. Use

Subtle surface Use #D4B5EA for cards and hover fills. Tint 80

Avoid beside #1D0420 — 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 #150421 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: #150421;
  --color-base-rgb: 21 4 33;
  --color-base-oklch: oklch(16.0% 0.062 308.8);
  --color-50: #F8F1FE;
  --color-100: #EDDAFB;
  --color-200: #DBB6F6;
  --color-300: #C085EA;
  --color-400: #A458DA;
  --color-500: #8636BF;
  --color-600: #693091;
  --color-700: #4D2867;
  --color-800: #341E43;
  --color-900: #201429;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  jet-black: {
    50: '#F8F1FE',
    100: '#EDDAFB',
    200: '#DBB6F6',
    300: '#C085EA',
    400: '#A458DA',
    500: '#8636BF',
    600: '#693091',
    700: '#4D2867',
    800: '#341E43',
    900: '#201429',
  },
}

$base: #150421;
$base-ink: #FFFFFF;
$base-50: #F8F1FE;
$base-100: #EDDAFB;
$base-200: #DBB6F6;
$base-300: #C085EA;
$base-400: #A458DA;
$base-500: #8636BF;
$base-600: #693091;
$base-700: #4D2867;
$base-800: #341E43;
$base-900: #201429;
$base-hover: #100319;
$base-subtle: #BF8EE2;

{
    "color": {
        "base": {
            "value": "#150421",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F8F1FE",
                "type": "color"
            },
            "100": {
                "value": "#EDDAFB",
                "type": "color"
            },
            "200": {
                "value": "#DBB6F6",
                "type": "color"
            },
            "300": {
                "value": "#C085EA",
                "type": "color"
            },
            "400": {
                "value": "#A458DA",
                "type": "color"
            },
            "500": {
                "value": "#8636BF",
                "type": "color"
            },
            "600": {
                "value": "#693091",
                "type": "color"
            },
            "700": {
                "value": "#4D2867",
                "type": "color"
            },
            "800": {
                "value": "#341E43",
                "type": "color"
            },
            "900": {
                "value": "#201429",
                "type": "color"
            }
        }
    }
}

Palettes built on #150421

Color Lab

Pairs with #150421

UI roles & guardrails

In real applications

Scales

Every model

Export