#638F23#638F23

#638F23 is a mid, vivid yellow-green. Relative luminance 0.224; OKLCH L 59.7% C 0.143 H 129.5°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#638F23
RGB	rgb(99, 143, 35)
HSL	hsl(84, 61%, 35%)
HSV	hsv(84, 76%, 56%)
CMYK	cmyk(30.8%, 0%, 75.5%, 43.9%)
CIE-LAB	lab(54.47, -31.92, 49.34)
CIE-LCH	lch(54.47, 58.77, 122.90°)
OKLab	oklab(59.67% -0.0909 0.1102)
OKLCH	oklch(59.67% 0.143 129.5)
XYZ	xyz(15.2714, 22.4185, 5.1124)
Luminance	0.2242 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638F23 #4F238F

analogous

#8F8523 #638F23 #2D8F23

triadic

#638F23 #23638F #8F2363

tetradic

#638F23 #238F85 #4F238F #8F232D

square

#638F23 #238F85 #4F238F #8F232D

split-complementary

#638F23 #232D8F #85238F

monochromatic

#1F2D0B #415E17 #638F23 #85C02F #A2D657

Accessibility & contrast

On white

3.83

#638F23 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#638F23 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638F23

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638F23	#FFFFFF	#000000	##000000
##638F23	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#96840D

Deuteranopia (green-blind)

#90812D

Tritanopia (blue-blind)

#66897A

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #638f23;
/* rgb */ color: rgb(99, 143, 35);
/* oklch */ color: oklch(59.7% 0.143 129.5);

Tailwind

colors: {
  custom: {
    50: '#93b066',
    500: '#638f23',
    950: '#000000',
  },
}

SCSS

$custom: #638f23;
$custom-light: #93b066;
$custom-dark: #000000;

JSON

{
  "hex": "#638f23",
  "rgb": {
    "r": 99,
    "g": 143,
    "b": 35
  },
  "hsl": {
    "h": 84.444,
    "s": 60.674,
    "l": 34.902
  },
  "oklch": {
    "l": 0.59671,
    "c": 0.14285,
    "h": 129.5
  },
  "luminance": 0.22419
}

Semantic roles & 50–950 ramp

primary

#638F23

secondary

#7D54BA

accent

#44E485

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638F23

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

Preview Lab → · Contrast checker → · Palette generator →