#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
RGBrgb(100, 27, 17)
HSLhsl(7, 71%, 23%)
HSVhsv(7, 83%, 39%)
CMYKcmyk(0%, 73%, 83%, 60.8%)
CIE-LABlab(22.07, 32.18, 25.04)
CIE-LCHlch(22.07, 40.78, 37.88°)
OKLaboklab(34.05% 0.0916 0.0549)
OKLCHoklch(34.05% 0.107 30.9)
XYZxyz(5.7493, 3.5345, 0.9097)
Luminance0.0353 (WCAG relative)
Temperaturewarm
Familyred

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
##641B111.0012.301.7112.30
#FFFFFF12.301.0021.001.00
#0000001.7121.001.0021.00
##FFFFFF12.301.0021.001.00

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 →

#641B11 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva