#641D21#641D21

#641D21 is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.6% C 0.102 H 21.1°. Best body text is #FFFFFF at 12.07:1 contrast (WCAG AA passes).

Color values

HEX	#641D21
RGB	rgb(100, 29, 33)
HSL	hsl(357, 55%, 25%)
HSV	hsv(357, 71%, 39%)
CMYK	cmyk(0%, 71%, 67%, 60.8%)
CIE-LAB	lab(22.65, 32.16, 15.33)
CIE-LCH	lch(22.65, 35.63, 25.49°)
OKLab	oklab(34.56% 0.0952 0.0368)
OKLCH	oklch(34.56% 0.102 21.1)
XYZ	xyz(5.9700, 3.6987, 1.8381)
Luminance	0.0370 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641D21 #1D6460

analogous

#641D44 #641D21 #643D1D

triadic

#641D21 #21641D #1D2164

tetradic

#641D21 #44641D #1D6460 #3D1D64

square

#641D21 #44641D #1D6460 #3D1D64

split-complementary

#641D21 #1D643D #1D4464

monochromatic

#180708 #350F11 #641D21 #932B31 #C33940

Accessibility & contrast

On white

12.07

#641D21 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#641D21 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641D21

12.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641D21	#FFFFFF	#000000	##FFFFFF
##641D21	1.00	12.07	1.74	12.07
#FFFFFF	12.07	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302D21

Deuteranopia (green-blind)

#423C1F

Tritanopia (blue-blind)

#6E0C1F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641d21;
/* rgb */ color: rgb(100, 29, 33);
/* oklch */ color: oklch(34.6% 0.102 21.1);

Tailwind

colors: {
  custom: {
    50: '#955e5c',
    500: '#641d21',
    950: '#000000',
  },
}

SCSS

$custom: #641d21;
$custom-light: #955e5c;
$custom-dark: #000000;

JSON

{
  "hex": "#641d21",
  "rgb": {
    "r": 100,
    "g": 29,
    "b": 33
  },
  "hsl": {
    "h": 356.62,
    "s": 55.039,
    "l": 25.294
  },
  "oklch": {
    "l": 0.34562,
    "c": 0.10203,
    "h": 21.1
  },
  "luminance": 0.03698
}

Semantic roles & 50–950 ramp

primary

#641D21

secondary

#449994

accent

#DED649

background

#F9F5F5

surface

#F2E9E9

border

#CCC5C5

text

#0E0404

muted

#7E7979

Preview Lab

Preview with #641D21

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

Preview Lab → · Contrast checker → · Palette generator →