#641B27#641B27

#641B27 is a dark, moderate red. Relative luminance 0.036; OKLCH L 34.5% C 0.104 H 15.1°. Best body text is #FFFFFF at 12.15:1 contrast (WCAG AA passes).

Color values

HEX	#641B27
RGB	rgb(100, 27, 39)
HSL	hsl(350, 57%, 25%)
HSV	hsv(350, 73%, 39%)
CMYK	cmyk(0%, 73%, 61%, 60.8%)
CIE-LAB	lab(22.45, 33.53, 10.96)
CIE-LCH	lch(22.45, 35.28, 18.10°)
OKLab	oklab(34.45% 0.1007 0.0271)
OKLCH	oklch(34.45% 0.104 15.1)
XYZ	xyz(6.0142, 3.6405, 2.3051)
Luminance	0.0364 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B27 #1B6458

analogous

#641B4C #641B27 #64341B

triadic

#641B27 #27641B #1B2764

tetradic

#641B27 #4C641B #1B6458 #341B64

square

#641B27 #4C641B #1B6458 #341B64

split-complementary

#641B27 #1B6434 #1B4C64

monochromatic

#180709 #340E14 #641B27 #94283A #C4354D

Accessibility & contrast

On white

12.15

#641B27 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#641B27 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B27

12.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B27	#FFFFFF	#000000	##FFFFFF
##641B27	1.00	12.15	1.73	12.15
#FFFFFF	12.15	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E2C27

Deuteranopia (green-blind)

#403B25

Tritanopia (blue-blind)

#6E0B20

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641b27;
/* rgb */ color: rgb(100, 27, 39);
/* oklch */ color: oklch(34.5% 0.104 15.1);

Tailwind

colors: {
  custom: {
    50: '#955d60',
    500: '#641b27',
    950: '#000000',
  },
}

SCSS

$custom: #641b27;
$custom-light: #955d60;
$custom-dark: #000000;

JSON

{
  "hex": "#641b27",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 39
  },
  "hsl": {
    "h": 350.137,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34452,
    "c": 0.10432,
    "h": 15.1
  },
  "luminance": 0.0364
}

Semantic roles & 50–950 ramp

primary

#641B27

secondary

#41998B

accent

#E1C747

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0405

muted

#7E7979

Preview Lab

Preview with #641B27

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

Preview Lab → · Contrast checker → · Palette generator →