#641B10#641B10

#641B10 is a dark, moderate red. Relative luminance 0.035; OKLCH L 34.0% C 0.107 H 31.4°. Best body text is #FFFFFF at 12.31:1 contrast (WCAG AA passes).

Color values

HEX#641B10
RGBrgb(100, 27, 16)
HSLhsl(8, 72%, 23%)
HSVhsv(8, 84%, 39%)
CMYKcmyk(0%, 73%, 84%, 60.8%)
CIE-LABlab(22.06, 32.14, 25.60)
CIE-LCHlch(22.06, 41.09, 38.53°)
OKLaboklab(34.04% 0.0913 0.0558)
OKLCHoklch(34.04% 0.107 31.4)
XYZxyz(5.7416, 3.5315, 0.8694)
Luminance0.0353 (WCAG relative)
Temperaturewarm
Familyred

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#641B10 #105964
analogous
#64102F #641B10 #644510
triadic
#641B10 #10641B #1B1064
tetradic
#641B10 #2F6410 #105964 #451064
square
#641B10 #2F6410 #105964 #451064
split-complementary
#641B10 #106445 #102F64
monochromatic
#1A0704 #2F0D08 #641B10 #992918 #CE3721

Accessibility & contrast

On white

12.31
#641B10 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.71
#641B10 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #641B10
12.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##641B10#FFFFFF#000000##FFFFFF
##641B101.0012.311.7112.31
#FFFFFF12.311.0021.001.00
#0000001.7121.001.0021.00
##FFFFFF12.311.0021.001.00

Color blindness preview

Protanopia (red-blind)
#302B0E
Deuteranopia (green-blind)
#423B0D
Tritanopia (blue-blind)
#6F0319
Achromatopsia (no color)
#353535

Design tokens & code

CSS
--color: #641b10;
/* rgb */ color: rgb(100, 27, 16);
/* oklch */ color: oklch(34.0% 0.107 31.4);
Tailwind
colors: {
  custom: {
    50: '#975c4f',
    500: '#641b10',
    950: '#000000',
  },
}
SCSS
$custom: #641b10;
$custom-light: #975c4f;
$custom-dark: #000000;
JSON
{
  "hex": "#641b10",
  "rgb": {
    "r": 100,
    "g": 27,
    "b": 16
  },
  "hsl": {
    "h": 7.857,
    "s": 72.414,
    "l": 22.745
  },
  "oklch": {
    "l": 0.34037,
    "c": 0.10698,
    "h": 31.4
  },
  "luminance": 0.03531
}

Semantic roles & 50–950 ramp

primary
#641B10
secondary
#338F9D
accent
#D7EF39
background
#FAF5F4
surface
#F3E9E7
border
#CDC5C3
text
#0F0402
muted
#7F7978

Preview Lab

Preview with #641B10

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

Preview Lab → · Contrast checker → · Palette generator →

#641B10 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva