#638F19#638F19

#638F19 is a mid, vivid yellow-green. Relative luminance 0.224; OKLCH L 59.6% C 0.148 H 128.9°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX#638F19
RGBrgb(99, 143, 25)
HSLhsl(82, 70%, 33%)
HSVhsv(82, 83%, 56%)
CMYKcmyk(30.8%, 0%, 82.5%, 43.9%)
CIE-LABlab(54.41, -32.45, 52.57)
CIE-LCHlch(54.41, 61.78, 121.69°)
OKLaboklab(59.61% -0.0931 0.1153)
OKLCHoklch(59.61% 0.148 128.9)
XYZxyz(15.1435, 22.3673, 4.4390)
Luminance0.2237 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#638F19 #45198F
analogous
#8F8019 #638F19 #288F19
triadic
#638F19 #19638F #8F1963
tetradic
#638F19 #198F80 #45198F #8F1928
square
#638F19 #198F80 #45198F #8F1928
split-complementary
#638F19 #19288F #80198F
monochromatic
#1B2707 #3F5B10 #638F19 #87C322 #A5DE44

Accessibility & contrast

On white

3.84
#638F19 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.47
#638F19 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638F19
5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##638F19#FFFFFF#000000##000000
##638F191.003.845.475.47
#FFFFFF3.841.0021.0021.00
#0000005.4721.001.001.00
##0000005.4721.001.001.00

Color blindness preview

Protanopia (red-blind)
#968400
Deuteranopia (green-blind)
#908126
Tritanopia (blue-blind)
#66887A
Achromatopsia (no color)
#828282

Design tokens & code

CSS
--color: #638f19;
/* rgb */ color: rgb(99, 143, 25);
/* oklch */ color: oklch(59.6% 0.148 128.9);
Tailwind
colors: {
  custom: {
    50: '#94b062',
    500: '#638f19',
    950: '#000000',
  },
}
SCSS
$custom: #638f19;
$custom-light: #94b062;
$custom-dark: #000000;
JSON
{
  "hex": "#638f19",
  "rgb": {
    "r": 99,
    "g": 143,
    "b": 25
  },
  "hsl": {
    "h": 82.373,
    "s": 70.238,
    "l": 32.941
  },
  "oklch": {
    "l": 0.5961,
    "c": 0.14821,
    "h": 128.9
  },
  "luminance": 0.22368
}

Semantic roles & 50–950 ramp

primary
#638F19
secondary
#7244BF
accent
#3BED7D
background
#F9FAF6
surface
#F2F4EB
border
#CCCEC6
text
#0E1006
muted
#7E7F7A

Preview Lab

Preview with #638F19

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

Preview Lab → · Contrast checker → · Palette generator →

#638F19 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva