#641B16#641B16

#641B16 is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.1% C 0.106 H 28.0°. Best body text is #FFFFFF at 12.28:1 contrast (WCAG AA passes).

Color values

HEX	#641B16
RGB	rgb(100, 27, 22)
HSL	hsl(4, 64%, 24%)
HSV	hsv(4, 78%, 39%)
CMYK	cmyk(0%, 73%, 78%, 60.8%)
CIE-LAB	lab(22.13, 32.41, 22.00)
CIE-LCH	lch(22.13, 39.17, 34.17°)
OKLab	oklab(34.12% 0.0935 0.0497)
OKLCH	oklch(34.12% 0.106 28)
XYZ	xyz(5.7929, 3.5520, 1.1395)
Luminance	0.0355 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B16 #165F64

analogous

#641638 #641B16 #644216

triadic

#641B16 #16641B #1B1664

tetradic

#641B16 #386416 #165F64 #421664

square

#641B16 #386416 #165F64 #421664

split-complementary

#641B16 #166442 #163864

monochromatic

#190706 #320D0B #641B16 #962921 #C8362C

Accessibility & contrast

On white

12.28

#641B16 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#641B16 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B16

12.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B16	#FFFFFF	#000000	##FFFFFF
##641B16	1.00	12.28	1.71	12.28
#FFFFFF	12.28	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302B15

Deuteranopia (green-blind)

#423B13

Tritanopia (blue-blind)

#6F051A

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #641b16;
/* rgb */ color: rgb(100, 27, 22);
/* oklch */ color: oklch(34.1% 0.106 28.0);

Tailwind

colors: {
  custom: {
    50: '#975c53',
    500: '#641b16',
    950: '#000000',
  },
}

SCSS

$custom: #641b16;
$custom-light: #975c53;
$custom-dark: #000000;

JSON

{
  "hex": "#641b16",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 22
  },
  "hsl": {
    "h": 3.846,
    "s": 63.934,
    "l": 23.922
  },
  "oklch": {
    "l": 0.34116,
    "c": 0.10583,
    "h": 28
  },
  "luminance": 0.03551
}

Semantic roles & 50–950 ramp

primary

#641B16

secondary

#3B959B

accent

#DCE741

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #641B16

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

Preview Lab → · Contrast checker → · Palette generator →