#641A1B#641A1B

#641A1B is a dark, moderate red. Relative luminance 0.035; OKLCH L 34.1% C 0.106 H 24.1°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#641A1B
RGB	rgb(100, 26, 27)
HSL	hsl(359, 59%, 25%)
HSV	hsv(359, 74%, 39%)
CMYK	cmyk(0%, 74%, 73%, 60.8%)
CIE-LAB	lab(22.05, 33.12, 18.62)
CIE-LCH	lch(22.05, 38.00, 29.34°)
OKLab	oklab(34.08% 0.0969 0.0433)
OKLCH	oklch(34.08% 0.106 24.1)
XYZ	xyz(5.8234, 3.5281, 1.4111)
Luminance	0.0353 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641A1B #1A6463

analogous

#641A40 #641A1B #643E1A

triadic

#641A1B #1B641A #1A1B64

tetradic

#641A1B #40641A #1A6463 #3E1A64

square

#641A1B #40641A #1A6463 #3E1A64

split-complementary

#641A1B #1A643E #1A4064

monochromatic

#180607 #330D0E #641A1B #952728 #C53335

Accessibility & contrast

On white

12.31

#641A1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#641A1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641A1B

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641A1B	#FFFFFF	#000000	##FFFFFF
##641A1B	1.00	12.31	1.71	12.31
#FFFFFF	12.31	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F2B1A

Deuteranopia (green-blind)

#413B19

Tritanopia (blue-blind)

#6E041B

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #641a1b;
/* rgb */ color: rgb(100, 26, 27);
/* oklch */ color: oklch(34.1% 0.106 24.1);

Tailwind

colors: {
  custom: {
    50: '#965c57',
    500: '#641a1b',
    950: '#000000',
  },
}

SCSS

$custom: #641a1b;
$custom-light: #965c57;
$custom-dark: #000000;

JSON

{
  "hex": "#641a1b",
  "rgb": {
    "r": 100,
    "g": 26,
    "b": 27
  },
  "hsl": {
    "h": 359.189,
    "s": 58.73,
    "l": 24.706
  },
  "oklch": {
    "l": 0.34076,
    "c": 0.10611,
    "h": 24.1
  },
  "luminance": 0.03527
}

Semantic roles & 50–950 ramp

primary

#641A1B

secondary

#409A98

accent

#E2E046

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #641A1B

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

Preview Lab → · Contrast checker → · Palette generator →