mediumblue

#0000CD

CSS color

Medium Blue (#0000CD) is a deep, rich pure blue CSS named color, slightly lighter than dark blue but still with high saturation and substantial depth. It is often described as the classic 'royal blue' adjacent—bold and commanding, used in government identity, academic branding, and digital interfaces requiring strong, authoritative blue energy.

カラー値

HEX

#0000CD

RGB

0, 0, 205

HSL

240.0, 100.0%, 40.2%

HSV

240.0, 100.0%, 80.4%

CMYK

100.0%, 100.0%, 0.0%, 19.6%

OKLCH

0.3835 0.2657 264.1

プロパティ

色彩心理学

True blue is the world's most popular favorite color, representing trust, competence, and stability. It suppresses appetite and promotes productivity, making it ideal for work environments. Blue is the dominant color in corporate branding because it communicates reliability without emotional excess.

Design Usage

Medium blue is the default choice for primary buttons, navigation bars, and link text across the web. It forms the foundation of design systems for banking, insurance, and enterprise SaaS products. While universally safe, it benefits from a distinctive hue angle or saturation to avoid blending into the sea of blue brands.

カラーハーモニー

色覚異常シミュレーション

CSS使用法

background-color: #0000CD;
color: #0000CD;
border-color: #0000CD;
最も近いTailwind: Violet 700 #6D28D9

Tailwindシェード

コントラストチェッカー

白背景のテキスト

11.16:1

AA Pass AAA Pass

黒背景のテキスト

1.88:1

AA Fail AAA Fail

比較する

よくある質問

What are the RGB, HSL, and CMYK values of #0000CD?

RGB(0, 0, 205) · HSL(240.0, 100.0%, 40.2%) · CMYK(100.0%, 100.0%, 0.0%, 19.6%)

Does #0000CD meet WCAG contrast on white?

11.16:1 — WCAG AA 合格, AAA 合格 for normal text.

What text color is readable on #0000CD?

Use FFFFFF text on a #0000CD background; contrast on black is 1.88:1.