What color is #021E99?

#021E99 is a dark, vivid blue. In RGB it is rgb(2, 30, 153), and in HSL hsl(229, 97%, 30%).

Is #021E99 accessible as text?

On white, #021E99 has a contrast ratio of 12.74:1 (passes WCAG AA for body text); on black it is 1.65:1 (fails). For text placed on #021E99, use white for the best readability.

What is the closest Tailwind color to #021E99?

The nearest Tailwind CSS token is blue-900 (#1C398E).

What colors go well with #021E99?

#021E99 pairs cleanly with neutrals — cream, taupe, charcoal and cool grays — and with its complementary #977B02. In UI, a softer accent is often easier to use than the exact complement. Explore the harmonies, shades, tints and ready-made palettes for #021E99 below.

Is #021E99 good for buttons?

#021E99 works well for buttons and highlights, but use white text on #021E99 — black text only reaches 1.65:1, below the 4.5:1 needed for normal-size labels.

Is #021E99 the same as CSS darkblue?

No — #021E99 is not the CSS named color darkblue, but darkblue (#00008B) is the closest CSS named color.

#021E99 Color — HEX, RGB, HSL, Palette & Shades

Palettes built on #021E99

Not just a swatch — here's how #021E99 works with other colors. Named schemes with #021E99 in its natural role, and a note on why the supporting colors balance it.

Luxury Packaging Feature · 5 colors

Feature #021E99 Anchor #141210 Accent #ACAE53 Secondary #242933 Surface #F0EEE3

Zaffre 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.

Tech Product Signal · 5 colors

Signal #021E99 Surface #14161A Highlight #F4F6F8 Secondary #5A6672 Accent #234CB7

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

Moody Editorial Color · 5 colors

Color #021E99 Anchor #2A2A2E Secondary #6E6E74 Surface #E9E7DA Accent #180055

Zaffre 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 Zaffre.

Coastal Morning Lead · 5 colors

Lead #021E99 Accent #A5C4C2 Surface #DDDBBF Secondary #9AA0A1 Anchor #21344A

Zaffre 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 #F8F4EF Accent #021E99 Secondary #495C83 Support #9D8F88 Ink #18140F

Zaffre 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 Zaffre carrying the quiet middle.

Build a working theme in the generator →

Color Lab

How #021E99 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 9/100

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 18/100

Very low

Clean and current — no dusty, aged cast.

Luxury 65/100

High

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

Brand distinctiveness 75/100

High

Bold and ownable — memorable as a primary brand color.

UI accent fit 46/100

Moderate

Workable accent with care around contrast.

Surface fit 18/100

Very low

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

Print safety 64/100

High

Prints close, with a slight loss of vibrancy.

Pairs with #021E99

For UI

For branding

For interior

For fashion

People also use #021E99 with

Bondi Blue Indigo Olive Brown Gainsboro Gunmetal Gray

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 12.7:1. Use

Subtle surface Use #C2CCF4 for cards and hover fills. Tint 80

Avoid beside #190297 — 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 #021E99 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: #021E99;
  --color-base-rgb: 2 30 153;
  --color-base-oklch: oklch(33.6% 0.195 264.4);
  --color-50: #F0F3FE;
  --color-100: #D8DFFD;
  --color-200: #B1BEFC;
  --color-300: #7990F6;
  --color-400: #4966E9;
  --color-500: #2544D0;
  --color-600: #253B9D;
  --color-700: #202F6F;
  --color-800: #192248;
  --color-900: #11162C;
  --color-on-base: #FFFFFF;
}

// tailwind.config.js
colors: {
  zaffre: {
    50: '#F0F3FE',
    100: '#D8DFFD',
    200: '#B1BEFC',
    300: '#7990F6',
    400: '#4966E9',
    500: '#2544D0',
    600: '#253B9D',
    700: '#202F6F',
    800: '#192248',
    900: '#11162C',
  },
}

$base: #021E99;
$base-ink: #FFFFFF;
$base-50: #F0F3FE;
$base-100: #D8DFFD;
$base-200: #B1BEFC;
$base-300: #7990F6;
$base-400: #4966E9;
$base-500: #2544D0;
$base-600: #253B9D;
$base-700: #202F6F;
$base-800: #192248;
$base-900: #11162C;
$base-hover: #021879;
$base-subtle: #A2B0F1;

{
    "color": {
        "base": {
            "value": "#021E99",
            "type": "color"
        },
        "onBase": {
            "value": "#FFFFFF",
            "type": "color"
        },
        "scale": {
            "50": {
                "value": "#F0F3FE",
                "type": "color"
            },
            "100": {
                "value": "#D8DFFD",
                "type": "color"
            },
            "200": {
                "value": "#B1BEFC",
                "type": "color"
            },
            "300": {
                "value": "#7990F6",
                "type": "color"
            },
            "400": {
                "value": "#4966E9",
                "type": "color"
            },
            "500": {
                "value": "#2544D0",
                "type": "color"
            },
            "600": {
                "value": "#253B9D",
                "type": "color"
            },
            "700": {
                "value": "#202F6F",
                "type": "color"
            },
            "800": {
                "value": "#192248",
                "type": "color"
            },
            "900": {
                "value": "#11162C",
                "type": "color"
            }
        }
    }
}

Palettes built on #021E99

Color Lab

Pairs with #021E99

UI roles & guardrails

In real applications

Scales

Every model

Export