#638D19#638D19

#638D19 is a mid, vivid yellow-green. Relative luminance 0.218; OKLCH L 59.1% C 0.146 H 128.5°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX#638D19
RGBrgb(99, 141, 25)
HSLhsl(82, 70%, 33%)
HSVhsv(82, 82%, 55%)
CMYKcmyk(29.8%, 0%, 82.3%, 44.7%)
CIE-LABlab(53.78, -31.52, 52.00)
CIE-LCHlch(53.78, 60.81, 121.22°)
OKLaboklab(59.1% -0.0906 0.1141)
OKLCHoklch(59.1% 0.146 128.5)
XYZxyz(14.8459, 21.7722, 4.3398)
Luminance0.2177 (WCAG relative)
Temperaturewarm
Familyyellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#638D19 #43198D
analogous
#8D7D19 #638D19 #298D19
triadic
#638D19 #19638D #8D1963
tetradic
#638D19 #198D7D #43198D #8D1929
square
#638D19 #198D7D #43198D #8D1929
split-complementary
#638D19 #19298D #7D198D
monochromatic
#1A2507 #3F5910 #638D19 #87C122 #A6DE43

Accessibility & contrast

On white

3.92
#638D19 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.35
#638D19 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638D19
5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##638D19#FFFFFF#000000##000000
##638D191.003.925.355.35
#FFFFFF3.921.0021.0021.00
#0000005.3521.001.001.00
##0000005.3521.001.001.00

Color blindness preview

Protanopia (red-blind)
#948200
Deuteranopia (green-blind)
#8F8026
Tritanopia (blue-blind)
#678678
Achromatopsia (no color)
#818181

Design tokens & code

CSS
--color: #638d19;
/* rgb */ color: rgb(99, 141, 25);
/* oklch */ color: oklch(59.1% 0.146 128.5);
Tailwind
colors: {
  custom: {
    50: '#94ae61',
    500: '#638d19',
    950: '#000000',
  },
}
SCSS
$custom: #638d19;
$custom-light: #94ae61;
$custom-dark: #000000;
JSON
{
  "hex": "#638d19",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 25
  },
  "hsl": {
    "h": 81.724,
    "s": 69.88,
    "l": 32.549
  },
  "oklch": {
    "l": 0.59097,
    "c": 0.14569,
    "h": 128.5
  },
  "luminance": 0.21773
}

Semantic roles & 50–950 ramp

primary
#638D19
secondary
#7043BF
accent
#3BED7B
background
#F9FAF6
surface
#F2F4EB
border
#CCCEC6
text
#0E1005
muted
#7E7F7A

Preview Lab

Preview with #638D19

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

Preview Lab → · Contrast checker → · Palette generator →

#638D19 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva