#280300#280300

#280300 is a very dark, moderate red. Relative luminance 0.005; OKLCH L 18.0% C 0.065 H 33.6°. Best body text is #FFFFFF at 19.04:1 contrast (WCAG AA passes).

Color values

HEX	#280300
RGB	rgb(40, 3, 0)
HSL	hsl(5, 100%, 8%)
HSV	hsv(5, 100%, 16%)
CMYK	cmyk(0%, 92.5%, 100%, 84.3%)
CIE-LAB	lab(4.66, 17.01, 7.30)
CIE-LCH	lch(4.66, 18.51, 23.22°)
OKLab	oklab(18.04% 0.0545 0.0363)
OKLCH	oklch(18.04% 0.065 33.6)
XYZ	xyz(0.9078, 0.5164, 0.0519)
Luminance	0.0052 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280300 #002528

analogous

#280011 #280300 #281700

triadic

#280300 #002803 #030028

tetradic

#280300 #112800 #002528 #170028

square

#280300 #112800 #002528 #170028

split-complementary

#280300 #002817 #001128

monochromatic

#1F0200 #1F0200 #280300 #650800 #A20C00

Accessibility & contrast

On white

19.04

#280300 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#280300 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280300

19.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280300	#FFFFFF	#000000	##FFFFFF
##280300	1.00	19.04	1.10	19.04
#FFFFFF	19.04	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D0A00

Deuteranopia (green-blind)

#171300

Tritanopia (blue-blind)

#2D0002

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #280300;
/* rgb */ color: rgb(40, 3, 0);
/* oklch */ color: oklch(18.0% 0.065 33.6);

Tailwind

colors: {
  custom: {
    50: '#634747',
    500: '#280300',
    950: '#000000',
  },
}

SCSS

$custom: #280300;
$custom-light: #634747;
$custom-dark: #000000;

JSON

{
  "hex": "#280300",
  "rgb": {
    "r": 40,
    "g": 3,
    "b": 0
  },
  "hsl": {
    "h": 4.5,
    "s": 100,
    "l": 7.843
  },
  "oklch": {
    "l": 0.18038,
    "c": 0.06546,
    "h": 33.6
  },
  "luminance": 0.00516
}

Semantic roles & 50–950 ramp

primary

#280300

secondary

#146970

accent

#EFFF29

background

#F6F4F3

surface

#EBE6E5

border

#C6C2C1

text

#060000

muted

#7A7777

Preview Lab

Preview with #280300

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

Preview Lab → · Contrast checker → · Palette generator →