#641B29#641B29

#641B29 is a dark, moderate red. Relative luminance 0.037; OKLCH L 34.5% C 0.104 H 13.4°. Best body text is #FFFFFF at 12.13:1 contrast (WCAG AA passes).

Color values

HEX	#641B29
RGB	rgb(100, 27, 41)
HSL	hsl(348, 57%, 25%)
HSV	hsv(348, 73%, 39%)
CMYK	cmyk(0%, 73%, 59%, 60.8%)
CIE-LAB	lab(22.49, 33.70, 9.64)
CIE-LCH	lch(22.49, 35.05, 15.97°)
OKLab	oklab(34.5% 0.1016 0.0241)
OKLCH	oklch(34.5% 0.104 13.4)
XYZ	xyz(6.0483, 3.6541, 2.4842)
Luminance	0.0365 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B29 #1B6456

analogous

#641B4E #641B29 #64311B

triadic

#641B29 #29641B #1B2964

tetradic

#641B29 #4E641B #1B6456 #311B64

square

#641B29 #4E641B #1B6456 #311B64

split-complementary

#641B29 #1B6431 #1B4E64

monochromatic

#18070A #340E15 #641B29 #94283D #C43551

Accessibility & contrast

On white

12.13

#641B29 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#641B29 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B29

12.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B29	#FFFFFF	#000000	##FFFFFF
##641B29	1.00	12.13	1.73	12.13
#FFFFFF	12.13	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D2C29

Deuteranopia (green-blind)

#403B27

Tritanopia (blue-blind)

#6E0B21

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #641b29;
/* rgb */ color: rgb(100, 27, 41);
/* oklch */ color: oklch(34.5% 0.104 13.4);

Tailwind

colors: {
  custom: {
    50: '#955d62',
    500: '#641b29',
    950: '#000000',
  },
}

SCSS

$custom: #641b29;
$custom-light: #955d62;
$custom-dark: #000000;

JSON

{
  "hex": "#641b29",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 41
  },
  "hsl": {
    "h": 348.493,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34503,
    "c": 0.10445,
    "h": 13.4
  },
  "luminance": 0.03653
}

Semantic roles & 50–950 ramp

primary

#641B29

secondary

#419989

accent

#E1C347

background

#F9F5F5

surface

#F2E9EA

border

#CCC5C6

text

#0E0405

muted

#7E7979

Preview Lab

Preview with #641B29

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

Preview Lab → · Contrast checker → · Palette generator →