#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
RGB	rgb(99, 143, 25)
HSL	hsl(82, 70%, 33%)
HSV	hsv(82, 83%, 56%)
CMYK	cmyk(30.8%, 0%, 82.5%, 43.9%)
CIE-LAB	lab(54.41, -32.45, 52.57)
CIE-LCH	lch(54.41, 61.78, 121.69°)
OKLab	oklab(59.61% -0.0931 0.1153)
OKLCH	oklch(59.61% 0.148 128.9)
XYZ	xyz(15.1435, 22.3673, 4.4390)
Luminance	0.2237 (WCAG relative)
Temperature	warm
Family	yellow-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
##638F19	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

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 →