#638D2B#638D2B

#638D2B is a mid, vivid yellow-green. Relative luminance 0.219; OKLCH L 59.2% C 0.135 H 129.8°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#638D2B
RGB	rgb(99, 141, 43)
HSL	hsl(86, 53%, 36%)
HSV	hsv(86, 70%, 55%)
CMYK	cmyk(29.8%, 0%, 69.5%, 44.7%)
CIE-LAB	lab(53.90, -30.44, 45.64)
CIE-LCH	lch(53.90, 54.86, 123.70°)
OKLab	oklab(59.22% -0.0862 0.1036)
OKLCH	oklch(59.22% 0.135 129.8)
XYZ	xyz(15.1064, 21.8764, 5.7117)
Luminance	0.2188 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#638D2B #552B8D

analogous

#8D862B #638D2B #328D2B

triadic

#638D2B #2B638D #8D2B63

tetradic

#638D2B #2B8D86 #552B8D #8D2B32

square

#638D2B #2B8D86 #552B8D #8D2B32

split-complementary

#638D2B #2B328D #862B8D

monochromatic

#212F0E #425E1D #638D2B #84BC39 #A1CF63

Accessibility & contrast

On white

3.91

#638D2B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#638D2B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #638D2B

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##638D2B	#FFFFFF	#000000	##000000
##638D2B	1.00	3.91	5.38	5.38
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#94831D

Deuteranopia (green-blind)

#8E8033

Tritanopia (blue-blind)

#668779

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #638d2b;
/* rgb */ color: rgb(99, 141, 43);
/* oklch */ color: oklch(59.2% 0.135 129.8);

Tailwind

colors: {
  custom: {
    50: '#93ae6a',
    500: '#638d2b',
    950: '#000000',
  },
}

SCSS

$custom: #638d2b;
$custom-light: #93ae6a;
$custom-dark: #000000;

JSON

{
  "hex": "#638d2b",
  "rgb": {
    "r": 99,
    "g": 141,
    "b": 43
  },
  "hsl": {
    "h": 85.714,
    "s": 53.261,
    "l": 36.078
  },
  "oklch": {
    "l": 0.59223,
    "c": 0.13481,
    "h": 129.8
  },
  "luminance": 0.21877
}

Semantic roles & 50–950 ramp

primary

#638D2B

secondary

#845EB6

accent

#4BDD8A

background

#F9FAF6

surface

#F2F4EB

border

#CCCEC6

text

#0D1007

muted

#7E7F7A

Preview Lab

Preview with #638D2B

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

Preview Lab → · Contrast checker → · Palette generator →