#638E17#638E17

#638E17 is a mid, vivid yellow-green. Relative luminance 0.221; OKLCH L 59.3% C 0.148 H 128.6°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#638E17
RGB	rgb(99, 142, 23)
HSL	hsl(82, 72%, 32%)
HSV	hsv(82, 84%, 56%)
CMYK	cmyk(30.3%, 0%, 83.8%, 44.3%)
CIE-LAB	lab(54.09, -32.07, 52.85)
CIE-LCH	lch(54.09, 61.82, 121.26°)
OKLab	oklab(59.34% -0.0922 0.1156)
OKLCH	oklch(59.34% 0.148 128.6)
XYZ	xyz(14.9732, 22.0601, 4.2796)
Luminance	0.2206 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638E17 #42178E

analogous

#8E7E17 #638E17 #278E17

triadic

#638E17 #17638E #8E1763

tetradic

#638E17 #178E7E #42178E #8E1727

square

#638E17 #178E7E #42178E #8E1727

split-complementary

#638E17 #17278E #7E178E

monochromatic

#1A2506 #3E590E #638E17 #88C320 #A6E03F

Accessibility & contrast

On white

3.88

#638E17 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#638E17 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638E17

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638E17	#FFFFFF	#000000	##000000
##638E17	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#958300

Deuteranopia (green-blind)

#8F8025

Tritanopia (blue-blind)

#678779

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #638e17;
/* rgb */ color: rgb(99, 142, 23);
/* oklch */ color: oklch(59.3% 0.148 128.6);

Tailwind

colors: {
  custom: {
    50: '#94af61',
    500: '#638e17',
    950: '#000000',
  },
}

SCSS

$custom: #638e17;
$custom-light: #94af61;
$custom-dark: #000000;

JSON

{
  "hex": "#638e17",
  "rgb": {
    "r": 99,
    "g": 142,
    "b": 23
  },
  "hsl": {
    "h": 81.681,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.59343,
    "c": 0.14785,
    "h": 128.6
  },
  "luminance": 0.22061
}

Semantic roles & 50–950 ramp

primary

#638E17

secondary

#6F40C0

accent

#39EF7B

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0E1005

muted

#7E7F7A

Preview Lab

Preview with #638E17

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

Preview Lab → · Contrast checker → · Palette generator →