Bright Orange#FF5B00

#FF5B00 is a light, highly saturated orange. Relative luminance 0.287; OKLCH L 68.3% C 0.213 H 40.3°. Best body text is #000000 at 6.75:1 contrast (WCAG AA passes).

Bright Orange — editorial page

Color values

HEX	#FF5B00
RGB	rgb(255, 91, 0)
HSL	hsl(21, 100%, 50%)
HSV	hsv(21, 100%, 100%)
CMYK	cmyk(0%, 64.3%, 100%, 0%)
CIE-LAB	lab(60.56, 59.66, 70.41)
CIE-LCH	lch(60.56, 92.28, 49.72°)
OKLab	oklab(68.26% 0.1623 0.1377)
OKLCH	oklch(68.26% 0.213 40.3)
XYZ	xyz(44.9865, 28.7490, 3.1803)
Luminance	0.2874 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#FF5B00 #00A4FF

analogous

#FF0024 #FF5B00 #FFDB00

triadic

#FF5B00 #00FF5B #5B00FF

tetradic

#FF5B00 #24FF00 #00A4FF #DB00FF

square

#FF5B00 #24FF00 #00A4FF #DB00FF

split-complementary

#FF5B00 #00FFDB #0024FF

monochromatic

#852F00 #C24500 #FF5B00 #FF823D #FFAA7A

Accessibility & contrast

On white

3.11

#FF5B00 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.75

#FF5B00 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #FF5B00

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##FF5B00	#FFFFFF	#000000	##000000
##FF5B00	1.00	3.11	6.75	6.75
#FFFFFF	3.11	1.00	21.00	21.00
#000000	6.75	21.00	1.00	1.00
##000000	6.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8C7B00

Deuteranopia (green-blind)

#B4A000

Tritanopia (blue-blind)

#FF264E

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #ff5b00;
/* rgb */ color: rgb(255, 91, 0);
/* oklch */ color: oklch(68.3% 0.213 40.3);

Tailwind

colors: {
  custom: {
    50: '#ff9059',
    500: '#ff5b00',
    950: '#000000',
  },
}

SCSS

$custom: #ff5b00;
$custom-light: #ff9059;
$custom-dark: #000000;

JSON

{
  "hex": "#ff5b00",
  "rgb": {
    "r": 255,
    "g": 91,
    "b": 0
  },
  "hsl": {
    "h": 21.412,
    "s": 100,
    "l": 50
  },
  "oklch": {
    "l": 0.68255,
    "c": 0.21282,
    "h": 40.3
  },
  "luminance": 0.28742
}

Semantic roles & 50–950 ramp

primary

#FF5B00

secondary

#74BEE7

accent

#B3FF29

background

#FFF9F5

surface

#FFF1E9

border

#D7CBC5

text

#1B0D04

muted

#887E79

Preview Lab

Preview with #FF5B00

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →