#280B05#280B05

#280B05 is a very dark, muted red. Relative luminance 0.007; OKLCH L 19.7% C 0.051 H 34.9°. Best body text is #FFFFFF at 18.42:1 contrast (WCAG AA passes).

Color values

HEX	#280B05
RGB	rgb(40, 11, 5)
HSL	hsl(10, 78%, 9%)
HSV	hsv(10, 88%, 16%)
CMYK	cmyk(0%, 72.5%, 87.5%, 84.3%)
CIE-LAB	lab(6.34, 14.08, 7.71)
CIE-LCH	lch(6.34, 16.05, 28.69°)
OKLab	oklab(19.7% 0.0417 0.0291)
OKLCH	oklch(19.7% 0.051 34.9)
XYZ	xyz(1.0222, 0.7016, 0.2251)
Luminance	0.0070 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280B05 #052228

analogous

#280511 #280B05 #281D05

triadic

#280B05 #05280B #0B0528

tetradic

#280B05 #112805 #052228 #1D0528

square

#280B05 #112805 #052228 #1D0528

split-complementary

#280B05 #05281D #051128

monochromatic

#1B0703 #1B0703 #280B05 #5E1A0C #952913

Accessibility & contrast

On white

18.42

#280B05 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#280B05 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280B05

18.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280B05	#FFFFFF	#000000	##FFFFFF
##280B05	1.00	18.42	1.14	18.42
#FFFFFF	18.42	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131004

Deuteranopia (green-blind)

#1A1604

Tritanopia (blue-blind)

#2D0609

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #280b05;
/* rgb */ color: rgb(40, 11, 5);
/* oklch */ color: oklch(19.7% 0.051 34.9);

Tailwind

colors: {
  custom: {
    50: '#634b49',
    500: '#280b05',
    950: '#000000',
  },
}

SCSS

$custom: #280b05;
$custom-light: #634b49;
$custom-dark: #000000;

JSON

{
  "hex": "#280b05",
  "rgb": {
    "r": 40,
    "g": 11,
    "b": 5
  },
  "hsl": {
    "h": 10.286,
    "s": 77.778,
    "l": 8.824
  },
  "oklch": {
    "l": 0.19698,
    "c": 0.05088,
    "h": 34.9
  },
  "luminance": 0.00701
}

Semantic roles & 50–950 ramp

primary

#280B05

secondary

#1F5D6A

accent

#D3F434

background

#F6F4F4

surface

#EBE7E6

border

#C6C3C2

text

#060100

muted

#7A7777

Preview Lab

Preview with #280B05

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

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