brown 1

#FF4040

X11 color

Brown 1 (#FF4040) is a striking paradox in the X11 naming system—it appears as a vivid, fully saturated coral red, not what most people would call brown. This naming reflects X11's mathematical approach to color variants rather than perceptual naming. In practice, it functions as a bright red-orange accent color suitable for alerts and vibrant designs.

カラー値

HEX

#FF4040

RGB

255, 64, 64

HSL

0.0, 100.0%, 62.5%

HSV

0.0, 74.9%, 100.0%

CMYK

0.0%, 74.9%, 74.9%, 0.0%

OKLCH

0.6597 0.2267 26.0

プロパティ

暖色 明るい 最も近い: brown 1

色彩心理学

Vivid pinks project confidence, playfulness, and bold self-expression. They challenge traditional associations, carrying both the warmth of red and the creativity of violet. Hot pink in particular signals rebellion against conventions and unapologetic individuality.

Design Usage

Medium pink is effective for fashion brands, social media platforms, and marketing campaigns targeting Gen Z audiences. It makes impactful gradient elements when blended with purple or orange. Use it for accent buttons and promotional banners where energy and excitement should override corporate formality.

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: #FF4040;
color: #FF4040;
border-color: #FF4040;
最も近いTailwind: Red 500 #EF4444

Tailwindシェード

コントラストチェッカー

白背景のテキスト

3.47:1

AA Fail AAA Fail

黒背景のテキスト

6.06:1

AA Pass AAA Fail

比較する

よくある質問

What are the RGB, HSL, and CMYK values of #FF4040?

RGB(255, 64, 64) · HSL(0.0, 100.0%, 62.5%) · CMYK(0.0%, 74.9%, 74.9%, 0.0%)

Does #FF4040 meet WCAG contrast on white?

3.47:1 — WCAG AA 不合格, AAA 不合格 for normal text.

What text color is readable on #FF4040?

Use 000000 text on a #FF4040 background; contrast on black is 6.06:1.