#641D1D#641D1D

#641D1D is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.5% C 0.102 H 24.2°. Best body text is #FFFFFF at 12.10:1 contrast (WCAG AA passes).

Color values

HEX	#641D1D
RGB	rgb(100, 29, 29)
HSL	hsl(0, 55%, 25%)
HSV	hsv(0, 71%, 39%)
CMYK	cmyk(0%, 71%, 71%, 60.8%)
CIE-LAB	lab(22.58, 31.89, 17.93)
CIE-LCH	lch(22.58, 36.59, 29.34°)
OKLab	oklab(34.48% 0.0935 0.0421)
OKLCH	oklch(34.48% 0.102 24.2)
XYZ	xyz(5.9173, 3.6776, 1.5604)
Luminance	0.0368 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641D1D #1D6464

analogous

#641D40 #641D1D #64401D

triadic

#641D1D #1D641D #1D1D64

tetradic

#641D1D #40641D #1D6464 #401D64

square

#641D1D #40641D #1D6464 #401D64

split-complementary

#641D1D #1D6440 #1D4064

monochromatic

#180707 #350F0F #641D1D #932B2B #C33939

Accessibility & contrast

On white

12.10

#641D1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#641D1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641D1D

12.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641D1D	#FFFFFF	#000000	##FFFFFF
##641D1D	1.00	12.10	1.74	12.10
#FFFFFF	12.10	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302C1C

Deuteranopia (green-blind)

#423C1B

Tritanopia (blue-blind)

#6E0B1E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641d1d;
/* rgb */ color: rgb(100, 29, 29);
/* oklch */ color: oklch(34.5% 0.102 24.2);

Tailwind

colors: {
  custom: {
    50: '#965e59',
    500: '#641d1d',
    950: '#000000',
  },
}

SCSS

$custom: #641d1d;
$custom-light: #965e59;
$custom-dark: #000000;

JSON

{
  "hex": "#641d1d",
  "rgb": {
    "r": 100,
    "g": 29,
    "b": 29
  },
  "hsl": {
    "h": 0,
    "s": 55.039,
    "l": 25.294
  },
  "oklch": {
    "l": 0.34483,
    "c": 0.10249,
    "h": 24.2
  },
  "luminance": 0.03677
}

Semantic roles & 50–950 ramp

primary

#641D1D

secondary

#449999

accent

#DEDE49

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #641D1D

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

Preview Lab → · Contrast checker → · Palette generator →