#638D23#638D23

#638D23 is a mid, vivid yellow-green. Relative luminance 0.218; OKLCH L 59.2% C 0.140 H 129.1°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#638D23
RGB	rgb(99, 141, 35)
HSL	hsl(84, 60%, 35%)
HSV	hsv(84, 75%, 55%)
CMYK	cmyk(29.8%, 0%, 75.2%, 44.7%)
CIE-LAB	lab(53.84, -30.99, 48.73)
CIE-LCH	lch(53.84, 57.75, 122.45°)
OKLab	oklab(59.16% -0.0884 0.1089)
OKLCH	oklch(59.16% 0.14 129.1)
XYZ	xyz(14.9738, 21.8233, 5.0132)
Luminance	0.2182 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638D23 #4D238D

analogous

#8D8223 #638D23 #2E8D23

triadic

#638D23 #23638D #8D2363

tetradic

#638D23 #238D82 #4D238D #8D232E

square

#638D23 #238D82 #4D238D #8D232E

split-complementary

#638D23 #232E8D #82238D

monochromatic

#1E2B0B #415C17 #638D23 #85BE2F #A2D555

Accessibility & contrast

On white

3.91

#638D23 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#638D23 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638D23

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638D23	#FFFFFF	#000000	##000000
##638D23	1.00	3.91	5.36	5.36
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94830E

Deuteranopia (green-blind)

#8E802D

Tritanopia (blue-blind)

#668779

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #638d23;
/* rgb */ color: rgb(99, 141, 35);
/* oklch */ color: oklch(59.2% 0.140 129.1);

Tailwind

colors: {
  custom: {
    50: '#93ae66',
    500: '#638d23',
    950: '#000000',
  },
}

SCSS

$custom: #638d23;
$custom-light: #93ae66;
$custom-dark: #000000;

JSON

{
  "hex": "#638d23",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 35
  },
  "hsl": {
    "h": 83.774,
    "s": 60.227,
    "l": 34.51
  },
  "oklch": {
    "l": 0.59159,
    "c": 0.14024,
    "h": 129.1
  },
  "luminance": 0.21824
}

Semantic roles & 50–950 ramp

primary

#638D23

secondary

#7B53B9

accent

#44E383

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638D23

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

Preview Lab → · Contrast checker → · Palette generator →