#280501#280501

#280501 is a very dark, moderate red. Relative luminance 0.006; OKLCH L 18.5% C 0.061 H 34.2°. Best body text is #FFFFFF at 18.88:1 contrast (WCAG AA passes).

Color values

HEX	#280501
RGB	rgb(40, 5, 1)
HSL	hsl(6, 95%, 8%)
HSV	hsv(6, 98%, 16%)
CMYK	cmyk(0%, 87.5%, 97.5%, 84.3%)
CIE-LAB	lab(5.08, 16.28, 7.49)
CIE-LCH	lch(5.08, 17.93, 24.71°)
OKLab	oklab(18.48% 0.0508 0.0346)
OKLCH	oklch(18.48% 0.061 34.2)
XYZ	xyz(0.9349, 0.5620, 0.0880)
Luminance	0.0056 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280501 #012428

analogous

#280110 #280501 #281801

triadic

#280501 #012805 #050128

tetradic

#280501 #102801 #012428 #180128

square

#280501 #102801 #012428 #180128

split-complementary

#280501 #012818 #011028

monochromatic

#1E0401 #1E0401 #280501 #640C02 #9F1404

Accessibility & contrast

On white

18.88

#280501 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#280501 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280501

18.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280501	#FFFFFF	#000000	##FFFFFF
##280501	1.00	18.88	1.11	18.88
#FFFFFF	18.88	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F0C01

Deuteranopia (green-blind)

#181400

Tritanopia (blue-blind)

#2D0004

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #280501;
/* rgb */ color: rgb(40, 5, 1);
/* oklch */ color: oklch(18.5% 0.061 34.2);

Tailwind

colors: {
  custom: {
    50: '#634847',
    500: '#280501',
    950: '#000000',
  },
}

SCSS

$custom: #280501;
$custom-light: #634847;
$custom-dark: #000000;

JSON

{
  "hex": "#280501",
  "rgb": {
    "r": 40,
    "g": 5,
    "b": 1
  },
  "hsl": {
    "h": 6.154,
    "s": 95.122,
    "l": 8.039
  },
  "oklch": {
    "l": 0.18475,
    "c": 0.06147,
    "h": 34.2
  },
  "luminance": 0.00562
}

Semantic roles & 50–950 ramp

primary

#280501

secondary

#16666F

accent

#E9FF29

background

#F6F4F3

surface

#EBE6E5

border

#C6C2C1

text

#060000

muted

#7A7777

Preview Lab

Preview with #280501

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

Preview Lab → · Contrast checker → · Palette generator →