#641B2C#641B2C

#641B2C is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.6% C 0.105 H 10.7°. Best body text is #FFFFFF at 12.10:1 contrast (WCAG AA passes).

Color values

HEX	#641B2C
RGB	rgb(100, 27, 44)
HSL	hsl(346, 57%, 25%)
HSV	hsv(346, 73%, 39%)
CMYK	cmyk(0%, 73%, 56%, 60.8%)
CIE-LAB	lab(22.57, 33.97, 7.67)
CIE-LCH	lch(22.57, 34.82, 12.73°)
OKLab	oklab(34.58% 0.1029 0.0195)
OKLCH	oklch(34.58% 0.105 10.7)
XYZ	xyz(6.1026, 3.6759, 2.7705)
Luminance	0.0367 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B2C #1B6453

analogous

#641B51 #641B2C #642E1B

triadic

#641B2C #2C641B #1B2C64

tetradic

#641B2C #51641B #1B6453 #2E1B64

square

#641B2C #51641B #1B6453 #2E1B64

split-complementary

#641B2C #1B642E #1B5164

monochromatic

#18070B #340E17 #641B2C #942841 #C43556

Accessibility & contrast

On white

12.10

#641B2C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#641B2C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B2C

12.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B2C	#FFFFFF	#000000	##FFFFFF
##641B2C	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)

#2D2C2C

Deuteranopia (green-blind)

#403B2A

Tritanopia (blue-blind)

#6E0D22

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641b2c;
/* rgb */ color: rgb(100, 27, 44);
/* oklch */ color: oklch(34.6% 0.105 10.7);

Tailwind

colors: {
  custom: {
    50: '#955d64',
    500: '#641b2c',
    950: '#000000',
  },
}

SCSS

$custom: #641b2c;
$custom-light: #955d64;
$custom-dark: #000000;

JSON

{
  "hex": "#641b2c",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 44
  },
  "hsl": {
    "h": 346.027,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34584,
    "c": 0.10476,
    "h": 10.7
  },
  "luminance": 0.03675
}

Semantic roles & 50–950 ramp

primary

#641B2C

secondary

#419985

accent

#E1BD47

background

#F9F5F6

surface

#F2E9EB

border

#CCC5C6

text

#0E0405

muted

#7E797A

Preview Lab

Preview with #641B2C

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

Preview Lab → · Contrast checker → · Palette generator →