#280101#280101

#280101 is a very dark, moderate red. Relative luminance 0.005; OKLCH L 17.6% C 0.069 H 28.1°. Best body text is #FFFFFF at 19.18:1 contrast (WCAG AA passes).

Color values

HEX	#280101
RGB	rgb(40, 1, 1)
HSL	hsl(0, 95%, 8%)
HSV	hsv(0, 98%, 16%)
CMYK	cmyk(0%, 97.5%, 97.5%, 84.3%)
CIE-LAB	lab(4.29, 17.98, 6.35)
CIE-LCH	lch(4.29, 19.07, 19.45°)
OKLab	oklab(17.64% 0.0606 0.0324)
OKLCH	oklch(17.64% 0.069 28.1)
XYZ	xyz(0.8915, 0.4752, 0.0735)
Luminance	0.0047 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280101 #012828

analogous

#280114 #280101 #281401

triadic

#280101 #012801 #010128

tetradic

#280101 #142801 #012828 #140128

square

#280101 #142801 #012828 #140128

split-complementary

#280101 #012814 #011428

monochromatic

#1E0101 #1E0101 #280101 #640202 #9F0404

Accessibility & contrast

On white

19.18

#280101 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#280101 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280101

19.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280101	#FFFFFF	#000000	##FFFFFF
##280101	1.00	19.18	1.10	19.18
#FFFFFF	19.18	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B0901

Deuteranopia (green-blind)

#161200

Tritanopia (blue-blind)

#2D0001

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #280101;
/* rgb */ color: rgb(40, 1, 1);
/* oklch */ color: oklch(17.6% 0.069 28.1);

Tailwind

colors: {
  custom: {
    50: '#634647',
    500: '#280101',
    950: '#000000',
  },
}

SCSS

$custom: #280101;
$custom-light: #634647;
$custom-dark: #000000;

JSON

{
  "hex": "#280101",
  "rgb": {
    "r": 40,
    "g": 1,
    "b": 1
  },
  "hsl": {
    "h": 0,
    "s": 95.122,
    "l": 8.039
  },
  "oklch": {
    "l": 0.1764,
    "c": 0.06876,
    "h": 28.1
  },
  "luminance": 0.00475
}

Semantic roles & 50–950 ramp

primary

#280101

secondary

#166F6F

accent

#FFFF29

background

#F6F3F3

surface

#EBE5E5

border

#C6C1C1

text

#060000

muted

#7A7677

Preview Lab

Preview with #280101

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

Preview Lab → · Contrast checker → · Palette generator →