#901818#901818

#901818 is a dark, vivid red. Relative luminance 0.066; OKLCH L 42.4% C 0.155 H 27.0°. Best body text is #FFFFFF at 9.01:1 contrast (WCAG AA passes).

Color values

HEX	#901818
RGB	rgb(144, 24, 24)
HSL	hsl(0, 71%, 33%)
HSV	hsv(0, 83%, 56%)
CMYK	cmyk(0%, 83.3%, 83.3%, 43.5%)
CIE-LAB	lab(31.00, 48.22, 32.91)
CIE-LCH	lch(31.00, 58.38, 34.32°)
OKLab	oklab(42.38% 0.1381 0.0703)
OKLCH	oklch(42.38% 0.155 27)
XYZ	xyz(11.9946, 6.6505, 1.5161)
Luminance	0.0665 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#901818 #189090

analogous

#901854 #901818 #905418

triadic

#901818 #189018 #181890

tetradic

#901818 #549018 #189090 #541890

square

#901818 #549018 #189090 #541890

split-complementary

#901818 #189054 #185490

monochromatic

#270707 #5C0F0F #901818 #C42121 #E04343

Accessibility & contrast

On white

9.01

#901818 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#901818 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #901818

9.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##901818	#FFFFFF	#000000	##FFFFFF
##901818	1.00	9.01	2.33	9.01
#FFFFFF	9.01	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F3816

Deuteranopia (green-blind)

#5C5212

Tritanopia (blue-blind)

#9F001A

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #901818;
/* rgb */ color: rgb(144, 24, 24);
/* oklch */ color: oklch(42.4% 0.155 27.0);

Tailwind

colors: {
  custom: {
    50: '#ba6256',
    500: '#901818',
    950: '#000000',
  },
}

SCSS

$custom: #901818;
$custom-light: #ba6256;
$custom-dark: #000000;

JSON

{
  "hex": "#901818",
  "rgb": {
    "r": 144,
    "g": 24,
    "b": 24
  },
  "hsl": {
    "h": 0,
    "s": 71.429,
    "l": 32.941
  },
  "oklch": {
    "l": 0.4238,
    "c": 0.15496,
    "h": 27
  },
  "luminance": 0.06649
}

Semantic roles & 50–950 ramp

primary

#901818

secondary

#43C0C0

accent

#EEEE3A

background

#FCF6F5

surface

#F8EBE9

border

#D1C6C5

text

#130603

muted

#827A78

Preview Lab

Preview with #901818

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

Preview Lab → · Contrast checker → · Palette generator →