#280308#280308

#280308 is a very dark, moderate red. Relative luminance 0.005; OKLCH L 18.3% C 0.063 H 16.5°. Best body text is #FFFFFF at 18.97:1 contrast (WCAG AA passes).

Color values

HEX	#280308
RGB	rgb(40, 3, 8)
HSL	hsl(352, 86%, 8%)
HSV	hsv(352, 93%, 16%)
CMYK	cmyk(0%, 92.5%, 80%, 84.3%)
CIE-LAB	lab(4.82, 18.01, 4.27)
CIE-LCH	lch(4.82, 18.51, 13.35°)
OKLab	oklab(18.28% 0.0608 0.018)
OKLCH	oklch(18.28% 0.063 16.5)
XYZ	xyz(0.9516, 0.5339, 0.2826)
Luminance	0.0053 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280308 #032823

analogous

#28031A #280308 #281003

triadic

#280308 #082803 #030828

tetradic

#280308 #1A2803 #032823 #100328

square

#280308 #1A2803 #032823 #100328

split-complementary

#280308 #032810 #031A28

monochromatic

#1C0206 #1C0206 #280308 #610713 #9A0C1F

Accessibility & contrast

On white

18.97

#280308 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#280308 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280308

18.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280308	#FFFFFF	#000000	##FFFFFF
##280308	1.00	18.97	1.11	18.97
#FFFFFF	18.97	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C0B08

Deuteranopia (green-blind)

#161307

Tritanopia (blue-blind)

#2D0005

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #280308;
/* rgb */ color: rgb(40, 3, 8);
/* oklch */ color: oklch(18.3% 0.063 16.5);

Tailwind

colors: {
  custom: {
    50: '#64474a',
    500: '#280308',
    950: '#000000',
  },
}

SCSS

$custom: #280308;
$custom-light: #64474a;
$custom-dark: #000000;

JSON

{
  "hex": "#280308",
  "rgb": {
    "r": 40,
    "g": 3,
    "b": 8
  },
  "hsl": {
    "h": 351.892,
    "s": 86.047,
    "l": 8.431
  },
  "oklch": {
    "l": 0.18276,
    "c": 0.06343,
    "h": 16.5
  },
  "luminance": 0.00534
}

Semantic roles & 50–950 ramp

primary

#280308

secondary

#1B6C61

accent

#FCE02C

background

#F6F4F4

surface

#EBE6E7

border

#C6C2C3

text

#060001

muted

#7A7777

Preview Lab

Preview with #280308

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

Preview Lab → · Contrast checker → · Palette generator →