orangered 4

#8B2500

X11 color

Orangered 4 (#8B2500) is the darkest X11 OrangeRed — a deep, dark rust-maroon where the orange character has been almost entirely consumed by depth. This earthy dark tone evokes old dried blood, dark rust on iron, and antique brick. It's used as a grounding dark in warm color palettes and in historical illustration for architectural and earthy elements.

カラー値

HEX

#8B2500

RGB

139, 37, 0

HSL

16.0, 100.0%, 27.3%

HSV

16.0, 100.0%, 54.5%

CMYK

0.0%, 73.4%, 100.0%, 45.5%

OKLCH

0.4243 0.143 36.7

プロパティ

色彩心理学

Dark oranges like burnt sienna and rust evoke autumnal warmth, earthiness, and heritage. These tones connect to natural materials like terracotta and aged wood, suggesting authenticity and craftsmanship. They carry a nostalgic quality that feels grounded and trustworthy.

Design Usage

Dark oranges are effective in food and beverage branding, outdoor lifestyle products, and artisanal goods. They work as accent colors in data visualizations and infographics where warmth is needed without brightness. Combine them with deep greens or navy for a sophisticated, nature-inspired palette.

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: #8B2500;
color: #8B2500;
border-color: #8B2500;
最も近いTailwind: Orange 800 #9A3412

Tailwindシェード

コントラストチェッカー

白背景のテキスト

8.89:1

AA Pass AAA Pass

黒背景のテキスト

2.36:1

AA Fail AAA Fail

比較する

よくある質問

What are the RGB, HSL, and CMYK values of #8B2500?

RGB(139, 37, 0) · HSL(16.0, 100.0%, 27.3%) · CMYK(0.0%, 73.4%, 100.0%, 45.5%)

Does #8B2500 meet WCAG contrast on white?

8.89:1 — WCAG AA 合格, AAA 合格 for normal text.

What text color is readable on #8B2500?

Use FFFFFF text on a #8B2500 background; contrast on black is 2.36:1.