#637817#637817

#637817 is a mid, vivid yellow-green. Relative luminance 0.161; OKLCH L 53.7% C 0.120 H 121.6°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX#637817
RGBrgb(99, 120, 23)
HSLhsl(73, 68%, 28%)
HSVhsv(73, 81%, 47%)
CMYKcmyk(17.5%, 0%, 80.8%, 52.9%)
CIE-LABlab(47.17, -21.32, 46.59)
CIE-LCHlch(47.17, 51.24, 114.59°)
OKLaboklab(53.73% -0.063 0.1023)
OKLCHoklch(53.73% 0.12 121.6)
XYZxyz(12.0169, 16.1474, 3.2941)
Luminance0.1615 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#637817 #2C1778
analogous
#785C17 #637817 #327817
triadic
#637817 #176378 #781763
tetradic
#637817 #17785C #2C1778 #781732
square
#637817 #17785C #2C1778 #781732
split-complementary
#637817 #173278 #5C1778
monochromatic
#151A05 #39450D #637817 #8DAB21 #B4D832

Accessibility & contrast

On white

4.97
#637817 on #FFFFFF
AA ✓AA large ✓AAA ✗

On black

4.23
#637817 on #000000
AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #637817
4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##637817#FFFFFF#000000##FFFFFF
##6378171.004.974.234.97
#FFFFFF4.971.0021.001.00
#0000004.2321.001.0021.00
##FFFFFF4.971.0021.001.00

Color blindness preview

Protanopia (red-blind)
#807000
Deuteranopia (green-blind)
#7D7021
Tritanopia (blue-blind)
#697166
Achromatopsia (no color)
#707070

Design tokens & code

CSS
--color: #637817;
/* rgb */ color: rgb(99, 120, 23);
/* oklch */ color: oklch(53.7% 0.120 121.6);
Tailwind
colors: {
  custom: {
    50: '#939f5d',
    500: '#637817',
    950: '#000000',
  },
}
SCSS
$custom: #637817;
$custom-light: #939f5d;
$custom-dark: #000000;
JSON
{
  "hex": "#637817",
  "rgb": {
    "r": 99,
    "g": 120,
    "b": 23
  },
  "hsl": {
    "h": 72.99,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.53729,
    "c": 0.12015,
    "h": 121.6
  },
  "luminance": 0.16147
}

Semantic roles & 50–950 ramp

primary
#637817
secondary
#563EAD
accent
#3DEB63
background
#F9F9F5
surface
#F2F2E9
border
#CCCCC5
text
#0D0E05
muted
#7E7E79

Preview Lab

Preview with #637817

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

Preview Lab → · Contrast checker → · Palette generator →

#637817 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva