#641F1B#641F1B

#641F1B is a dark, moderate red. Relative luminance 0.038; OKLCH L 34.7% C 0.101 H 26.9°. Best body text is #FFFFFF at 11.98:1 contrast (WCAG AA passes).

Color values

HEX	#641F1B
RGB	rgb(100, 31, 27)
HSL	hsl(3, 57%, 25%)
HSV	hsv(3, 73%, 39%)
CMYK	cmyk(0%, 69%, 73%, 60.8%)
CIE-LAB	lab(22.89, 30.82, 19.64)
CIE-LCH	lch(22.89, 36.55, 32.51°)
OKLab	oklab(34.71% 0.0896 0.0455)
OKLCH	oklch(34.71% 0.101 26.9)
XYZ	xyz(5.9440, 3.7693, 1.4512)
Luminance	0.0377 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641F1B #1B6064

analogous

#641B3B #641F1B #64441B

triadic

#641F1B #1B641F #1F1B64

tetradic

#641F1B #3B641B #1B6064 #441B64

square

#641F1B #3B641B #1B6064 #441B64

split-complementary

#641F1B #1B6444 #1B3B64

monochromatic

#180707 #34100E #641F1B #942E28 #C43D35

Accessibility & contrast

On white

11.98

#641F1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#641F1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641F1B

11.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641F1B	#FFFFFF	#000000	##FFFFFF
##641F1B	1.00	11.98	1.75	11.98
#FFFFFF	11.98	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#322D1A

Deuteranopia (green-blind)

#433C19

Tritanopia (blue-blind)

#6E0E1F

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #641f1b;
/* rgb */ color: rgb(100, 31, 27);
/* oklch */ color: oklch(34.7% 0.101 26.9);

Tailwind

colors: {
  custom: {
    50: '#965f57',
    500: '#641f1b',
    950: '#000000',
  },
}

SCSS

$custom: #641f1b;
$custom-light: #965f57;
$custom-dark: #000000;

JSON

{
  "hex": "#641f1b",
  "rgb": {
    "r": 100,
    "g": 31,
    "b": 27
  },
  "hsl": {
    "h": 3.288,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34711,
    "c": 0.10052,
    "h": 26.9
  },
  "luminance": 0.03768
}

Semantic roles & 50–950 ramp

primary

#641F1B

secondary

#419599

accent

#D8E147

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0503

muted

#7E7978

Preview Lab

Preview with #641F1B

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

Preview Lab → · Contrast checker → · Palette generator →