#280603#280603

#280603 is a very dark, muted red. Relative luminance 0.006; OKLCH L 18.7% C 0.059 H 31.1°. Best body text is #FFFFFF at 18.79:1 contrast (WCAG AA passes).

Color values

HEX	#280603
RGB	rgb(40, 6, 3)
HSL	hsl(5, 86%, 8%)
HSV	hsv(5, 93%, 16%)
CMYK	cmyk(0%, 85%, 92.5%, 84.3%)
CIE-LAB	lab(5.31, 16.09, 7.02)
CIE-LCH	lch(5.31, 17.56, 23.58°)
OKLab	oklab(18.73% 0.0504 0.0303)
OKLCH	oklch(18.73% 0.059 31.1)
XYZ	xyz(0.9567, 0.5881, 0.1493)
Luminance	0.0059 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#280603 #032528

analogous

#280312 #280603 #281803

triadic

#280603 #032806 #060328

tetradic

#280603 #122803 #032528 #180328

square

#280603 #122803 #032528 #180328

split-complementary

#280603 #032818 #031228

monochromatic

#1C0402 #1C0402 #280603 #610F07 #9A170C

Accessibility & contrast

On white

18.79

#280603 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#280603 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #280603

18.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##280603	#FFFFFF	#000000	##FFFFFF
##280603	1.00	18.79	1.12	18.79
#FFFFFF	18.79	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F0D03

Deuteranopia (green-blind)

#181402

Tritanopia (blue-blind)

#2D0105

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #280603;
/* rgb */ color: rgb(40, 6, 3);
/* oklch */ color: oklch(18.7% 0.059 31.1);

Tailwind

colors: {
  custom: {
    50: '#634948',
    500: '#280603',
    950: '#000000',
  },
}

SCSS

$custom: #280603;
$custom-light: #634948;
$custom-dark: #000000;

JSON

{
  "hex": "#280603",
  "rgb": {
    "r": 40,
    "g": 6,
    "b": 3
  },
  "hsl": {
    "h": 4.865,
    "s": 86.047,
    "l": 8.431
  },
  "oklch": {
    "l": 0.18727,
    "c": 0.0588,
    "h": 31.1
  },
  "luminance": 0.00588
}

Semantic roles & 50–950 ramp

primary

#280603

secondary

#1B656C

accent

#EBFC2C

background

#F6F4F4

surface

#EBE6E6

border

#C6C2C2

text

#060000

muted

#7A7777

Preview Lab

Preview with #280603

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

Preview Lab → · Contrast checker → · Palette generator →