#641B24#641B24

#641B24 is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.4% C 0.104 H 17.6°. Best body text is #FFFFFF at 12.18:1 contrast (WCAG AA passes).

Color values

HEX	#641B24
RGB	rgb(100, 27, 36)
HSL	hsl(353, 57%, 25%)
HSV	hsv(353, 73%, 39%)
CMYK	cmyk(0%, 73%, 64%, 60.8%)
CIE-LAB	lab(22.38, 33.29, 12.93)
CIE-LCH	lch(22.38, 35.72, 21.23°)
OKLab	oklab(34.38% 0.0994 0.0315)
OKLCH	oklch(34.38% 0.104 17.6)
XYZ	xyz(5.9665, 3.6214, 2.0535)
Luminance	0.0362 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B24 #1B645B

analogous

#641B48 #641B24 #64371B

triadic

#641B24 #24641B #1B2464

tetradic

#641B24 #48641B #1B645B #371B64

square

#641B24 #48641B #1B645B #371B64

split-complementary

#641B24 #1B6437 #1B4864

monochromatic

#180709 #340E13 #641B24 #942835 #C43547

Accessibility & contrast

On white

12.18

#641B24 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#641B24 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B24

12.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B24	#FFFFFF	#000000	##FFFFFF
##641B24	1.00	12.18	1.72	12.18
#FFFFFF	12.18	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E2C24

Deuteranopia (green-blind)

#413B22

Tritanopia (blue-blind)

#6E091F

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #641b24;
/* rgb */ color: rgb(100, 27, 36);
/* oklch */ color: oklch(34.4% 0.104 17.6);

Tailwind

colors: {
  custom: {
    50: '#955d5e',
    500: '#641b24',
    950: '#000000',
  },
}

SCSS

$custom: #641b24;
$custom-light: #955d5e;
$custom-dark: #000000;

JSON

{
  "hex": "#641b24",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 36
  },
  "hsl": {
    "h": 352.603,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.3438,
    "c": 0.10428,
    "h": 17.6
  },
  "luminance": 0.03621
}

Semantic roles & 50–950 ramp

primary

#641B24

secondary

#41998F

accent

#E1CE47

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0404

muted

#7E7979

Preview Lab

Preview with #641B24

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

Preview Lab → · Contrast checker → · Palette generator →