Color detail

Dark Vibrant Blue
#0021B3

Centered around #0021B3, this dark blue palette offers a premium, high-trust visual foundation. The interaction between these deep tones creates a luxury aesthetic suitable for high-end digital products. A strong choice for heritage brands looking to modernize their digital presence.

BlueDarkcool

Generate harmony

Interactive

UI Sandbox

Project Dashboard

Active theme: Dark Vibrant Blue

Values

Production-ready color values

Copy formats for CSS, handoff docs, tokens, and implementation.

HEX

#0021B3

RGB

rgb(0, 33, 179)

HSL

hsl(229, 100%, 35%)

HSV

hsv(229, 100%, 70%)

CMYK

cmyk(100%, 82%, 0%, 30%)

Decimal

8627

Contrast

Accessibility checks

On white

11.24:1

On black

1.87:1

Shades

Tonal scale

#020927 #041049 #061B79 #0926AA #0B31DA #254BF4 #5573F6 #7C93F8 #A8B7FA #D3DBFD

90080070060050040030020010050

Accessibility

Contrast Audit

On White

WCAG AA PASS

Text

11.24:1

On Black

FAIL

Text

1.87:1

Vision

Simulator

protanopia

deuteranopia

tritanopia

Harmonies

Palette combinations from this base color

Open any harmony as a shareable palette route and keep refining from there.

Complementary

Open palette

#0021B3 #B39200

Triadic

Open palette

#0021B3 #B30021 #21B300

Analogous

Open palette

#007AB3 #004DB3 #0021B3 #0C00B3 #3900B3

Split complementary

Open palette

#0021B3 #B33900 #7AB300

Tetradic

Open palette

#0021B3 #B3007A #B39200 #00B339

Monochromatic

Open palette

#001366 #0021B3 #002FFF #4D6DFF #99ACFF

Analysis

Design expert profile

Detailed psychological and professional strategy for this specific tone.

Centered around #0021B3, this dark blue palette offers a premium, high-trust visual foundation. The interaction between these deep tones creates a luxury aesthetic suitable for high-end digital products. A strong choice for heritage brands looking to modernize their digital presence.

bluedarkcoolhex-0021b3h-229s-100l-35

Region

Language

English Español

Developer Handoff

Copy for any framework

CSS

/* Dark Vibrant Blue */
color: #0021B3;
background-color: #0021B3;
border-color: #0021B3;
box-shadow: 0 4px 24px #0021b340;

Tailwind CSS

bg-[#0021B3] text-[#0021B3] border-[#0021B3] ring-[#0021B3]

SwiftUI

Color(red: 0.000, green: 0.129, blue: 0.702)

Flutter / Dart

Color(0xFF0021B3)

Android XML

<color name="dark_vibrant_blue">#0021B3</color>

React Native

{ color: '#0021B3' }

Social Media

Share this color

Beautiful swatches optimized for Pinterest, Instagram, and design moodboards.

Tip: Screenshots of this card are optimized for Pinterest (4:5 ratio).

Related colors

Nearby named colors

About

About Dark Vibrant Blue

This section gives the same kind of richer color context you’d expect from a dedicated color reference page.

Meaning

Dark Vibrant Blue sits in the blue family with a dark tone, so it holds enough weight for primary UI accents. It reads as calm, credible, and interface-friendly.

Applications

Family

Blue

Tone

Dark

Temperature

cool

Keywords

blue, dark, cool, hex-0021b3, h-229, s-100

Conversion

Color conversions

Use these values in CSS, product docs, design tokens, and print-oriented workflows.

HEX

#0021B3

RGB

rgb(0, 33, 179)

HSL

hsl(229, 100%, 35%)

HSV

hsv(229, 100%, 70%)

CMYK

cmyk(100%, 82%, 0%, 30%)

Variations

Shades and tonal variations

Build softer surfaces, deeper states, and a cleaner tonal system from the same base hue.

#020927 #041049 #061B79 #0926AA #0B31DA #254BF4 #5573F6 #7C93F8 #A8B7FA #D3DBFD

900

#020927

800

#041049

700

#061B79

600

#0926AA

500

#0B31DA

400

#254BF4

Color harmonies

Harmony-based palette routes

Move from a single color into full palette ideas based on common harmony systems.

Complementary

Open palette

#0021B3 #B39200

Triadic

Open palette

#0021B3 #B30021 #21B300

Analogous

Open palette

#007AB3 #004DB3 #0021B3 #0C00B3 #3900B3

Split complementary

Open palette

#0021B3 #B33900 #7AB300

Tetradic

Open palette

#0021B3 #B3007A #B39200 #00B339

Monochromatic

Open palette

#001366 #0021B3 #002FFF #4D6DFF #99ACFF

Blindness simulator

Color blindness preview

These simulations help you judge whether the color keeps enough identity across common color-vision variations.

Protanopia

#0E0F90

Red-sensitive cones are reduced, so warm reds and greens can collapse toward similar mid-tones.

Deuteranopia

#0C0A87

Green-sensitive cones are reduced, which often compresses green and red distinctions.

Tritanopia

#02746E

Blue-sensitive cones are reduced, which shifts blues and yellows toward flatter blends.

Contrast checker

Accessibility contrast snapshots

Use these quick checks to understand where the color is more reliable for text, icons, and UI foregrounds.

On white

11.24:1

AAA passes for normal text.

On black

1.87:1

Fails normal and large text guidance.

Similar colors

Nearby color references

Use nearby colors when you want alternatives with a similar overall feel but a different hue or intensity.

Color libraries

Library-ready mappings

These mappings help you slot the color into CSS names, Tailwind-like scales, and semantic design tokens faster.

CSS named match

Dark Vibrant Blue

Closest standard CSS name to #0021B3 for developer-friendly reference and docs.

Design token

--color-blue-dark

A token-friendly alias you can use in design systems, Tailwind maps, or CSS variables.

Tailwind-friendly scale

blue-500

A naming pattern that fits Tailwind-style scale systems and keeps #0021B3 as the core value.

HSL token

229 100% 35%

Useful when your component library or theme layer stores semantic colors in HSL channels.

Color palettes

Palette ideas related to this color

These palette routes are pulled from the curated library based on RGB similarity, so you can branch into more complete systems quickly.

stabilitytrustintellect

Dark Vibrant Blue#0021B3

UI Sandbox

Production-ready color values

Accessibility checks

Tonal scale

Contrast Audit

Simulator

Palette combinations from this base color

Design expert profile

Language

Copy for any framework

Share this color