#638C23#638C23

#638C23 is a mid, vivid yellow-green. Relative luminance 0.215; OKLCH L 58.9% C 0.139 H 128.8°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#638C23
RGB	rgb(99, 140, 35)
HSL	hsl(83, 60%, 34%)
HSV	hsv(83, 75%, 55%)
CMYK	cmyk(29.3%, 0%, 75%, 45.1%)
CIE-LAB	lab(53.52, -30.52, 48.42)
CIE-LCH	lch(53.52, 57.23, 122.22°)
OKLab	oklab(58.9% -0.0871 0.1082)
OKLCH	oklch(58.9% 0.139 128.8)
XYZ	xyz(14.8270, 21.5298, 4.9643)
Luminance	0.2153 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638C23 #4C238C

analogous

#8C8123 #638C23 #2E8C23

triadic

#638C23 #23638C #8C2363

tetradic

#638C23 #238C81 #4C238C #8C232E

square

#638C23 #238C81 #4C238C #8C232E

split-complementary

#638C23 #232E8C #81238C

monochromatic

#1E2A0B #405B17 #638C23 #86BD2F #A3D455

Accessibility & contrast

On white

3.96

#638C23 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#638C23 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638C23

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638C23	#FFFFFF	#000000	##000000
##638C23	1.00	3.96	5.31	5.31
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#93820E

Deuteranopia (green-blind)

#8D7F2D

Tritanopia (blue-blind)

#668678

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #638c23;
/* rgb */ color: rgb(99, 140, 35);
/* oklch */ color: oklch(58.9% 0.139 128.8);

Tailwind

colors: {
  custom: {
    50: '#93ae66',
    500: '#638c23',
    950: '#000000',
  },
}

SCSS

$custom: #638c23;
$custom-light: #93ae66;
$custom-dark: #000000;

JSON

{
  "hex": "#638c23",
  "rgb": {
    "r": 99,
    "g": 140,
    "b": 35
  },
  "hsl": {
    "h": 83.429,
    "s": 60,
    "l": 34.314
  },
  "oklch": {
    "l": 0.58903,
    "c": 0.13894,
    "h": 128.8
  },
  "luminance": 0.2153
}

Semantic roles & 50–950 ramp

primary

#638C23

secondary

#7A52B8

accent

#45E383

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #638C23

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

Preview Lab → · Contrast checker → · Palette generator →