#641B15#641B15

#641B15 is a dark, moderate red. Relative luminance 0.035; OKLCH L 34.1% C 0.106 H 28.6°. Best body text is #FFFFFF at 12.29:1 contrast (WCAG AA passes).

Color values

HEX	#641B15
RGB	rgb(100, 27, 21)
HSL	hsl(5, 65%, 24%)
HSV	hsv(5, 79%, 39%)
CMYK	cmyk(0%, 73%, 79%, 60.8%)
CIE-LAB	lab(22.12, 32.36, 22.62)
CIE-LCH	lch(22.12, 39.48, 34.95°)
OKLab	oklab(34.1% 0.0931 0.0508)
OKLCH	oklch(34.1% 0.106 28.6)
XYZ	xyz(5.7835, 3.5482, 1.0897)
Luminance	0.0355 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B15 #155E64

analogous

#641536 #641B15 #644215

triadic

#641B15 #15641B #1B1564

tetradic

#641B15 #366415 #155E64 #421564

square

#641B15 #366415 #155E64 #421564

split-complementary

#641B15 #156442 #153664

monochromatic

#190705 #310D0A #641B15 #972920 #C9362A

Accessibility & contrast

On white

12.29

#641B15 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#641B15 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B15

12.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B15	#FFFFFF	#000000	##FFFFFF
##641B15	1.00	12.29	1.71	12.29
#FFFFFF	12.29	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302B14

Deuteranopia (green-blind)

#423B12

Tritanopia (blue-blind)

#6F041A

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #641b15;
/* rgb */ color: rgb(100, 27, 21);
/* oklch */ color: oklch(34.1% 0.106 28.6);

Tailwind

colors: {
  custom: {
    50: '#975c52',
    500: '#641b15',
    950: '#000000',
  },
}

SCSS

$custom: #641b15;
$custom-light: #975c52;
$custom-dark: #000000;

JSON

{
  "hex": "#641b15",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 21
  },
  "hsl": {
    "h": 4.557,
    "s": 65.289,
    "l": 23.725
  },
  "oklch": {
    "l": 0.34101,
    "c": 0.10601,
    "h": 28.6
  },
  "luminance": 0.03547
}

Semantic roles & 50–950 ramp

primary

#641B15

secondary

#3A949B

accent

#DBE840

background

#F9F5F4

surface

#F2E9E7

border

#CCC5C3

text

#0F0402

muted

#7E7978

Preview Lab

Preview with #641B15

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

Preview Lab → · Contrast checker → · Palette generator →