International Orange sits in the warm orange family, with the hex code #FF4F00 mapping to rgb(255, 79, 0) in RGB and hsl(18.6, 100%, 50%) in HSL. In OKLCH it carries 67% perceptual lightness and 0.222 chroma — a highly saturated, dark reading that behaves well as a primary, accent or decisive colour in modern interfaces. Orange combines red's urgency with yellow's optimism, landing on a hue that feels friendly without losing energy. It is the colour of recommendations, "+1" social signals and sunsets — inviting rather than aggressive.
Orange combines red's urgency with yellow's optimism, landing on a hue that feels friendly without losing energy. It is the colour of recommendations, "+1" social signals and sunsets — inviting rather than aggressive.
Pure orange rarely passes WCAG AA against white at body sizes — reserve it for headings, icons or buttons with explicit ≥4.5:1 fallback text colour.
#FF4F00rgb(255, 79, 0)hsl(18.6, 100%, 50%)hsv(18.6, 100%, 100%)lch(59.76% 97.08 47.27)oklch(66.96% 0.222 37.42)lab(59.76% 65.88 71.31):root {
--color: #ff4f00;
--color-rgb: rgb(255, 79, 0);
--color-hsl: hsl(18.6, 100%, 50%);
--color-oklch: oklch(66.96% 0.222 37.42);
}How international orange performs as foreground text on common surfaces, scored with WCAG 2.1.
Tints are produced by mixing international orange with progressively more white.
Shades are produced by mixing international orange with progressively more black.
Tones are produced by mixing international orange with progressively more gray, lowering chroma while keeping lightness.