#644B1C#644B1C

#644B1C is a dark, moderate orange. Relative luminance 0.078; OKLCH L 43.0% C 0.072 H 80.4°. Best body text is #FFFFFF at 8.19:1 contrast (WCAG AA passes).

Color values

HEX#644B1C
RGBrgb(100, 75, 28)
HSLhsl(39, 56%, 25%)
HSVhsv(39, 72%, 39%)
CMYKcmyk(0%, 25%, 72%, 60.8%)
CIE-LABlab(33.62, 5.09, 31.17)
CIE-LCHlch(33.62, 31.58, 80.73°)
OKLaboklab(42.96% 0.0119 0.0706)
OKLCHoklch(42.96% 0.072 80.4)
XYZxyz(7.9817, 7.8259, 2.1885)
Luminance0.0783 (WCAG relative)
Temperaturewarm
Familyorange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#644B1C #1C3564
analogous
#64271C #644B1C #59641C
triadic
#644B1C #1C644B #4B1C64
tetradic
#644B1C #1C6427 #1C3564 #641C59
square
#644B1C #1C6427 #1C3564 #641C59
split-complementary
#644B1C #1C5964 #271C64
monochromatic
#181207 #34270F #644B1C #946F29 #C49337

Accessibility & contrast

On white

8.19
#644B1C on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.57
#644B1C on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #644B1C
8.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##644B1C#FFFFFF#000000##FFFFFF
##644B1C1.008.192.578.19
#FFFFFF8.191.0021.001.00
#0000002.5721.001.0021.00
##FFFFFF8.191.0021.001.00

Color blindness preview

Protanopia (red-blind)
#554B17
Deuteranopia (green-blind)
#5B521E
Tritanopia (blue-blind)
#6D4441
Achromatopsia (no color)
#4F4F4F

Design tokens & code

CSS
--color: #644b1c;
/* rgb */ color: rgb(100, 75, 28);
/* oklch */ color: oklch(43.0% 0.072 80.4);
Tailwind
colors: {
  custom: {
    50: '#937d5b',
    500: '#644b1c',
    950: '#000000',
  },
}
SCSS
$custom: #644b1c;
$custom-light: #937d5b;
$custom-dark: #000000;
JSON
{
  "hex": "#644b1c",
  "rgb": {
    "r": 100,
    "g": 75,
    "b": 28
  },
  "hsl": {
    "h": 39.167,
    "s": 56.25,
    "l": 25.098
  },
  "oklch": {
    "l": 0.42962,
    "c": 0.07162,
    "h": 80.4
  },
  "luminance": 0.07825
}

Semantic roles & 50–950 ramp

primary
#644B1C
secondary
#436199
accent
#7DE048
background
#F9F7F5
surface
#F2EEE9
border
#CCC9C5
text
#0D0904
muted
#7E7B79

Preview Lab

Preview with #644B1C

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

Preview Lab → · Contrast checker → · Palette generator →

#644B1C Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva