#641B28#641B28

#641B28 is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.5% C 0.104 H 14.2°. Best body text is #FFFFFF at 12.14:1 contrast (WCAG AA passes).

Color values

HEX	#641B28
RGB	rgb(100, 27, 40)
HSL	hsl(349, 57%, 25%)
HSV	hsv(349, 73%, 39%)
CMYK	cmyk(0%, 73%, 60%, 60.8%)
CIE-LAB	lab(22.47, 33.61, 10.30)
CIE-LCH	lch(22.47, 35.16, 17.04°)
OKLab	oklab(34.48% 0.1012 0.0256)
OKLCH	oklch(34.48% 0.104 14.2)
XYZ	xyz(6.0310, 3.6472, 2.3935)
Luminance	0.0365 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B28 #1B6457

analogous

#641B4D #641B28 #64331B

triadic

#641B28 #28641B #1B2864

tetradic

#641B28 #4D641B #1B6457 #331B64

square

#641B28 #4D641B #1B6457 #331B64

split-complementary

#641B28 #1B6433 #1B4D64

monochromatic

#18070A #340E15 #641B28 #94283B #C4354F

Accessibility & contrast

On white

12.14

#641B28 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#641B28 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B28

12.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B28	#FFFFFF	#000000	##FFFFFF
##641B28	1.00	12.14	1.73	12.14
#FFFFFF	12.14	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D2C28

Deuteranopia (green-blind)

#403B26

Tritanopia (blue-blind)

#6E0B20

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641b28;
/* rgb */ color: rgb(100, 27, 40);
/* oklch */ color: oklch(34.5% 0.104 14.2);

Tailwind

colors: {
  custom: {
    50: '#955d61',
    500: '#641b28',
    950: '#000000',
  },
}

SCSS

$custom: #641b28;
$custom-light: #955d61;
$custom-dark: #000000;

JSON

{
  "hex": "#641b28",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 40
  },
  "hsl": {
    "h": 349.315,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34477,
    "c": 0.10437,
    "h": 14.2
  },
  "luminance": 0.03646
}

Semantic roles & 50–950 ramp

primary

#641B28

secondary

#41998A

accent

#E1C547

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0405

muted

#7E7979

Preview Lab

Preview with #641B28

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

Preview Lab → · Contrast checker → · Palette generator →