#641D1F#641D1F

#641D1F is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.5% C 0.102 H 22.7°. Best body text is #FFFFFF at 12.09:1 contrast (WCAG AA passes).

Color values

HEX	#641D1F
RGB	rgb(100, 29, 31)
HSL	hsl(358, 55%, 25%)
HSV	hsv(358, 71%, 39%)
CMYK	cmyk(0%, 71%, 69%, 60.8%)
CIE-LAB	lab(22.61, 32.02, 16.63)
CIE-LCH	lch(22.61, 36.09, 27.45°)
OKLab	oklab(34.52% 0.0943 0.0395)
OKLCH	oklch(34.52% 0.102 22.7)
XYZ	xyz(5.9428, 3.6878, 1.6949)
Luminance	0.0369 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641D1F #1D6462

analogous

#641D42 #641D1F #643E1D

triadic

#641D1F #1F641D #1D1F64

tetradic

#641D1F #42641D #1D6462 #3E1D64

square

#641D1F #42641D #1D6462 #3E1D64

split-complementary

#641D1F #1D643E #1D4264

monochromatic

#180707 #350F10 #641D1F #932B2E #C3393C

Accessibility & contrast

On white

12.09

#641D1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#641D1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641D1F

12.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641D1F	#FFFFFF	#000000	##FFFFFF
##641D1F	1.00	12.09	1.74	12.09
#FFFFFF	12.09	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302C1E

Deuteranopia (green-blind)

#423C1D

Tritanopia (blue-blind)

#6E0B1E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641d1f;
/* rgb */ color: rgb(100, 29, 31);
/* oklch */ color: oklch(34.5% 0.102 22.7);

Tailwind

colors: {
  custom: {
    50: '#965e5a',
    500: '#641d1f',
    950: '#000000',
  },
}

SCSS

$custom: #641d1f;
$custom-light: #965e5a;
$custom-dark: #000000;

JSON

{
  "hex": "#641d1f",
  "rgb": {
    "r": 100,
    "g": 29,
    "b": 31
  },
  "hsl": {
    "h": 358.31,
    "s": 55.039,
    "l": 25.294
  },
  "oklch": {
    "l": 0.34522,
    "c": 0.10223,
    "h": 22.7
  },
  "luminance": 0.03687
}

Semantic roles & 50–950 ramp

primary

#641D1F

secondary

#449997

accent

#DEDA49

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0403

muted

#7E7978

Preview Lab

Preview with #641D1F

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

Preview Lab → · Contrast checker → · Palette generator →