#641B2A#641B2A

#641B2A is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.5% C 0.105 H 12.5°. Best body text is #FFFFFF at 12.12:1 contrast (WCAG AA passes).

Color values

HEX	#641B2A
RGB	rgb(100, 27, 42)
HSL	hsl(348, 57%, 25%)
HSV	hsv(348, 73%, 39%)
CMYK	cmyk(0%, 73%, 58%, 60.8%)
CIE-LAB	lab(22.52, 33.79, 8.99)
CIE-LCH	lch(22.52, 34.96, 14.89°)
OKLab	oklab(34.53% 0.1021 0.0226)
OKLCH	oklch(34.53% 0.105 12.5)
XYZ	xyz(6.0659, 3.6612, 2.5773)
Luminance	0.0366 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B2A #1B6455

analogous

#641B4F #641B2A #64301B

triadic

#641B2A #2A641B #1B2A64

tetradic

#641B2A #4F641B #1B6455 #301B64

square

#641B2A #4F641B #1B6455 #301B64

split-complementary

#641B2A #1B6430 #1B4F64

monochromatic

#18070A #340E16 #641B2A #94283E #C43552

Accessibility & contrast

On white

12.12

#641B2A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#641B2A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B2A

12.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B2A	#FFFFFF	#000000	##FFFFFF
##641B2A	1.00	12.12	1.73	12.12
#FFFFFF	12.12	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D2C2A

Deuteranopia (green-blind)

#403B28

Tritanopia (blue-blind)

#6E0C21

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641b2a;
/* rgb */ color: rgb(100, 27, 42);
/* oklch */ color: oklch(34.5% 0.105 12.5);

Tailwind

colors: {
  custom: {
    50: '#955d63',
    500: '#641b2a',
    950: '#000000',
  },
}

SCSS

$custom: #641b2a;
$custom-light: #955d63;
$custom-dark: #000000;

JSON

{
  "hex": "#641b2a",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 42
  },
  "hsl": {
    "h": 347.671,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34529,
    "c": 0.10453,
    "h": 12.5
  },
  "luminance": 0.0366
}

Semantic roles & 50–950 ramp

primary

#641B2A

secondary

#419987

accent

#E1C147

background

#F9F5F5

surface

#F2E9EA

border

#CCC5C6

text

#0E0405

muted

#7E7979

Preview Lab

Preview with #641B2A

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

Preview Lab → · Contrast checker → · Palette generator →