#641E1B#641E1B

#641E1B is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.6% C 0.102 H 26.3°. Best body text is #FFFFFF at 12.05:1 contrast (WCAG AA passes).

Color values

HEX	#641E1B
RGB	rgb(100, 30, 27)
HSL	hsl(2, 57%, 25%)
HSV	hsv(2, 73%, 39%)
CMYK	cmyk(0%, 70%, 73%, 60.8%)
CIE-LAB	lab(22.72, 31.30, 19.42)
CIE-LCH	lch(22.72, 36.84, 31.82°)
OKLab	oklab(34.58% 0.0911 0.0451)
OKLCH	oklch(34.58% 0.102 26.3)
XYZ	xyz(5.9183, 3.7178, 1.4427)
Luminance	0.0372 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641E1B #1B6164

analogous

#641B3C #641E1B #64431B

triadic

#641E1B #1B641E #1E1B64

tetradic

#641E1B #3C641B #1B6164 #431B64

square

#641E1B #3C641B #1B6164 #431B64

split-complementary

#641E1B #1B6443 #1B3C64

monochromatic

#180707 #34100E #641E1B #942C28 #C43B35

Accessibility & contrast

On white

12.05

#641E1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#641E1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641E1B

12.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641E1B	#FFFFFF	#000000	##FFFFFF
##641E1B	1.00	12.05	1.74	12.05
#FFFFFF	12.05	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#312D1A

Deuteranopia (green-blind)

#433C19

Tritanopia (blue-blind)

#6E0C1E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641e1b;
/* rgb */ color: rgb(100, 30, 27);
/* oklch */ color: oklch(34.6% 0.102 26.3);

Tailwind

colors: {
  custom: {
    50: '#965e57',
    500: '#641e1b',
    950: '#000000',
  },
}

SCSS

$custom: #641e1b;
$custom-light: #965e57;
$custom-dark: #000000;

JSON

{
  "hex": "#641e1b",
  "rgb": {
    "r": 100,
    "g": 30,
    "b": 27
  },
  "hsl": {
    "h": 2.466,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34578,
    "c": 0.10166,
    "h": 26.3
  },
  "luminance": 0.03717
}

Semantic roles & 50–950 ramp

primary

#641E1B

secondary

#419699

accent

#DAE147

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0503

muted

#7E7978

Preview Lab

Preview with #641E1B

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

Preview Lab → · Contrast checker → · Palette generator →