#641D18#641D18

#641D18 is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.4% C 0.103 H 27.8°. Best body text is #FFFFFF at 12.13:1 contrast (WCAG AA passes).

Color values

HEX	#641D18
RGB	rgb(100, 29, 24)
HSL	hsl(4, 61%, 24%)
HSV	hsv(4, 76%, 39%)
CMYK	cmyk(0%, 71%, 76%, 60.8%)
CIE-LAB	lab(22.50, 31.60, 21.13)
CIE-LCH	lch(22.50, 38.01, 33.76°)
OKLab	oklab(34.4% 0.0914 0.0482)
OKLCH	oklch(34.4% 0.103 27.8)
XYZ	xyz(5.8604, 3.6549, 1.2608)
Luminance	0.0365 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641D18 #185F64

analogous

#641839 #641D18 #644318

triadic

#641D18 #18641D #1D1864

tetradic

#641D18 #396418 #185F64 #431864

square

#641D18 #396418 #185F64 #431864

split-complementary

#641D18 #186443 #183964

monochromatic

#190706 #330F0C #641D18 #952B24 #C73A30

Accessibility & contrast

On white

12.13

#641D18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#641D18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641D18

12.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641D18	#FFFFFF	#000000	##FFFFFF
##641D18	1.00	12.13	1.73	12.13
#FFFFFF	12.13	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312C17

Deuteranopia (green-blind)

#433B16

Tritanopia (blue-blind)

#6E091C

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641d18;
/* rgb */ color: rgb(100, 29, 24);
/* oklch */ color: oklch(34.4% 0.103 27.8);

Tailwind

colors: {
  custom: {
    50: '#965e55',
    500: '#641d18',
    950: '#000000',
  },
}

SCSS

$custom: #641d18;
$custom-light: #965e55;
$custom-dark: #000000;

JSON

{
  "hex": "#641d18",
  "rgb": {
    "r": 100,
    "g": 29,
    "b": 24
  },
  "hsl": {
    "h": 3.947,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.34398,
    "c": 0.10331,
    "h": 27.8
  },
  "luminance": 0.03654
}

Semantic roles & 50–950 ramp

primary

#641D18

secondary

#3E949A

accent

#DAE443

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0403

muted

#7E7978

Preview Lab

Preview with #641D18

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

Preview Lab → · Contrast checker → · Palette generator →