#641B0F#641B0F

#641B0F is a dark, moderate red. Relative luminance 0.035; OKLCH L 34.0% C 0.107 H 31.9°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX	#641B0F
RGB	rgb(100, 27, 15)
HSL	hsl(8, 74%, 23%)
HSV	hsv(8, 85%, 39%)
CMYK	cmyk(0%, 73%, 85%, 60.8%)
CIE-LAB	lab(22.05, 32.11, 26.13)
CIE-LCH	lch(22.05, 41.39, 39.14°)
OKLab	oklab(34.03% 0.0909 0.0567)
OKLCH	oklch(34.03% 0.107 31.9)
XYZ	xyz(5.7343, 3.5285, 0.8310)
Luminance	0.0353 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B0F #0F5864

analogous

#640F2D #641B0F #64460F

triadic

#641B0F #0F641B #1B0F64

tetradic

#641B0F #2D640F #0F5864 #460F64

square

#641B0F #2D640F #0F5864 #460F64

split-complementary

#641B0F #0F6446 #0F2D64

monochromatic

#1B0704 #2F0D07 #641B0F #992917 #CE381F

Accessibility & contrast

On white

12.31

#641B0F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#641B0F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B0F

12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B0F	#FFFFFF	#000000	##FFFFFF
##641B0F	1.00	12.31	1.71	12.31
#FFFFFF	12.31	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302B0D

Deuteranopia (green-blind)

#423B0C

Tritanopia (blue-blind)

#6F0319

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #641b0f;
/* rgb */ color: rgb(100, 27, 15);
/* oklch */ color: oklch(34.0% 0.107 31.9);

Tailwind

colors: {
  custom: {
    50: '#975c4e',
    500: '#641b0f',
    950: '#000000',
  },
}

SCSS

$custom: #641b0f;
$custom-light: #975c4e;
$custom-dark: #000000;

JSON

{
  "hex": "#641b0f",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 15
  },
  "hsl": {
    "h": 8.471,
    "s": 73.913,
    "l": 22.549
  },
  "oklch": {
    "l": 0.34026,
    "c": 0.10717,
    "h": 31.9
  },
  "luminance": 0.03528
}

Semantic roles & 50–950 ramp

primary

#641B0F

secondary

#328E9D

accent

#D6F137

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0401

muted

#7F7977

Preview Lab

Preview with #641B0F

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

Preview Lab → · Contrast checker → · Palette generator →