#641B11#641B11

#641B11 is a dark, moderate red. Relative luminance 0.035; OKLCH L 34.0% C 0.107 H 30.9°. Best body text is #FFFFFF at 12.30:1 contrast (WCAG AA passes).

Color values

HEX	#641B11
RGB	rgb(100, 27, 17)
HSL	hsl(7, 71%, 23%)
HSV	hsv(7, 83%, 39%)
CMYK	cmyk(0%, 73%, 83%, 60.8%)
CIE-LAB	lab(22.07, 32.18, 25.04)
CIE-LCH	lch(22.07, 40.78, 37.88°)
OKLab	oklab(34.05% 0.0916 0.0549)
OKLCH	oklch(34.05% 0.107 30.9)
XYZ	xyz(5.7493, 3.5345, 0.9097)
Luminance	0.0353 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#641B11 #115A64

analogous

#641130 #641B11 #644411

triadic

#641B11 #11641B #1B1164

tetradic

#641B11 #306411 #115A64 #441164

square

#641B11 #306411 #115A64 #441164

split-complementary

#641B11 #116444 #113064

monochromatic

#1A0704 #300D08 #641B11 #98291A #CD3723

Accessibility & contrast

On white

12.30

#641B11 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.71

#641B11 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B11

12.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##641B11	#FFFFFF	#000000	##FFFFFF
##641B11	1.00	12.30	1.71	12.30
#FFFFFF	12.30	1.00	21.00	1.00
#000000	1.71	21.00	1.00	21.00
##FFFFFF	12.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#302B0F

Deuteranopia (green-blind)

#423B0E

Tritanopia (blue-blind)

#6F0319

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #641b11;
/* rgb */ color: rgb(100, 27, 17);
/* oklch */ color: oklch(34.0% 0.107 30.9);

Tailwind

colors: {
  custom: {
    50: '#975c4f',
    500: '#641b11',
    950: '#000000',
  },
}

SCSS

$custom: #641b11;
$custom-light: #975c4f;
$custom-dark: #000000;

JSON

{
  "hex": "#641b11",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 17
  },
  "hsl": {
    "h": 7.229,
    "s": 70.94,
    "l": 22.941
  },
  "oklch": {
    "l": 0.34049,
    "c": 0.10678,
    "h": 30.9
  },
  "luminance": 0.03534
}

Semantic roles & 50–950 ramp

primary

#641B11

secondary

#35909C

accent

#D8EE3A

background

#FAF5F4

surface

#F3E9E7

border

#CDC5C3

text

#0F0402

muted

#7F7978

Preview Lab

Preview with #641B11

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

Preview Lab → · Contrast checker → · Palette generator →