#641018#641018

#641018 is a dark, moderate red. Relative luminance 0.031; OKLCH L 33.0% C 0.116 H 21.9°. Best body text is #FFFFFF at 12.89:1 contrast (WCAG AA passes).

Color values

HEX	#641018
RGB	rgb(100, 16, 24)
HSL	hsl(354, 72%, 23%)
HSV	hsv(354, 84%, 39%)
CMYK	cmyk(0%, 84%, 76%, 60.8%)
CIE-LAB	lab(20.62, 36.78, 18.93)
CIE-LCH	lch(20.62, 41.36, 27.23°)
OKLab	oklab(33% 0.1078 0.0434)
OKLCH	oklch(33% 0.116 21.9)
XYZ	xyz(5.6063, 3.1467, 1.1762)
Luminance	0.0315 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641018 #10645C

analogous

#641042 #641018 #643210

triadic

#641018 #186410 #101864

tetradic

#641018 #426410 #10645C #321064

square

#641018 #426410 #10645C #321064

split-complementary

#641018 #106432 #104264

monochromatic

#1A0406 #2F080B #641018 #991825 #CE2131

Accessibility & contrast

On white

12.89

#641018 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#641018 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641018

12.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641018	#FFFFFF	#000000	##FFFFFF
##641018	1.00	12.89	1.63	12.89
#FFFFFF	12.89	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A2618

Deuteranopia (green-blind)

#3F3815

Tritanopia (blue-blind)

#6F0014

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #641018;
/* rgb */ color: rgb(100, 16, 24);
/* oklch */ color: oklch(33.0% 0.116 21.9);

Tailwind

colors: {
  custom: {
    50: '#975854',
    500: '#641018',
    950: '#000000',
  },
}

SCSS

$custom: #641018;
$custom-light: #975854;
$custom-dark: #000000;

JSON

{
  "hex": "#641018",
  "rgb": {
    "r": 100,
    "g": 16,
    "b": 24
  },
  "hsl": {
    "h": 354.286,
    "s": 72.414,
    "l": 22.745
  },
  "oklch": {
    "l": 0.33001,
    "c": 0.11619,
    "h": 21.9
  },
  "luminance": 0.03146
}

Semantic roles & 50–950 ramp

primary

#641018

secondary

#339D93

accent

#EFDE39

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0402

muted

#7F7978

Preview Lab

Preview with #641018

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

Preview Lab → · Contrast checker → · Palette generator →