#280B03#280B03

#280B03 is a very dark, muted red. Relative luminance 0.007; OKLCH L 19.6% C 0.052 H 39.3°. Best body text is #FFFFFF at 18.43:1 contrast (WCAG AA passes).

Color values

HEX	#280B03
RGB	rgb(40, 11, 3)
HSL	hsl(13, 86%, 8%)
HSV	hsv(13, 93%, 16%)
CMYK	cmyk(0%, 72.5%, 92.5%, 84.3%)
CIE-LAB	lab(6.30, 13.86, 8.46)
CIE-LCH	lch(6.30, 16.24, 31.41°)
OKLab	oklab(19.65% 0.0403 0.033)
OKLCH	oklch(19.65% 0.052 39.3)
XYZ	xyz(1.0113, 0.6972, 0.1674)
Luminance	0.0070 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280B03 #032028

analogous

#28030D #280B03 #281D03

triadic

#280B03 #03280B #0B0328

tetradic

#280B03 #0D2803 #032028 #1D0328

square

#280B03 #0D2803 #032028 #1D0328

split-complementary

#280B03 #03281D #030D28

monochromatic

#1C0802 #1C0802 #280B03 #611B07 #9A2A0C

Accessibility & contrast

On white

18.43

#280B03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#280B03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280B03

18.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280B03	#FFFFFF	#000000	##FFFFFF
##280B03	1.00	18.43	1.14	18.43
#FFFFFF	18.43	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131002

Deuteranopia (green-blind)

#1A1603

Tritanopia (blue-blind)

#2D0509

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #280b03;
/* rgb */ color: rgb(40, 11, 3);
/* oklch */ color: oklch(19.6% 0.052 39.3);

Tailwind

colors: {
  custom: {
    50: '#634b48',
    500: '#280b03',
    950: '#000000',
  },
}

SCSS

$custom: #280b03;
$custom-light: #634b48;
$custom-dark: #000000;

JSON

{
  "hex": "#280b03",
  "rgb": {
    "r": 40,
    "g": 11,
    "b": 3
  },
  "hsl": {
    "h": 12.973,
    "s": 86.047,
    "l": 8.431
  },
  "oklch": {
    "l": 0.19649,
    "c": 0.05211,
    "h": 39.3
  },
  "luminance": 0.00697
}

Semantic roles & 50–950 ramp

primary

#280B03

secondary

#1B5A6C

accent

#CFFC2C

background

#F6F4F4

surface

#EBE7E6

border

#C6C3C2

text

#060100

muted

#7A7777

Preview Lab

Preview with #280B03

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

Preview Lab → · Contrast checker → · Palette generator →