#639740#639740

#639740 is a mid, vivid yellow-green. Relative luminance 0.252; OKLCH L 62.0% C 0.131 H 134.5°. Best body text is #000000 at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#639740
RGB	rgb(99, 151, 64)
HSL	hsl(96, 40%, 42%)
HSV	hsv(96, 58%, 59%)
CMYK	cmyk(34.4%, 0%, 57.6%, 40.8%)
CIE-LAB	lab(57.23, -33.16, 39.77)
CIE-LCH	lch(57.23, 51.79, 129.82°)
OKLab	oklab(62% -0.0919 0.0937)
OKLCH	oklch(62% 0.131 134.5)
XYZ	xyz(17.1373, 25.1553, 8.8020)
Luminance	0.2516 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#639740 #744097

analogous

#8F9740 #639740 #409749

triadic

#639740 #406397 #974063

tetradic

#639740 #408F97 #744097 #974940

square

#639740 #408F97 #744097 #974940

split-complementary

#639740 #494097 #97408F

monochromatic

#2B411C #476C2E #639740 #81B95B #A2CC86

Accessibility & contrast

On white

3.48

#639740 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.03

#639740 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #639740

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##639740	#FFFFFF	#000000	##000000
##639740	1.00	3.48	6.03	6.03
#FFFFFF	3.48	1.00	21.00	21.00
#000000	6.03	21.00	1.00	1.00
##000000	6.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#9C8C37

Deuteranopia (green-blind)

#958846

Tritanopia (blue-blind)

#639284

Achromatopsia (no color)

#898989

Design tokens & code

CSS

--color: #639740;
/* rgb */ color: rgb(99, 151, 64);
/* oklch */ color: oklch(62.0% 0.131 134.5);

Tailwind

colors: {
  custom: {
    50: '#92b678',
    500: '#639740',
    950: '#000000',
  },
}

SCSS

$custom: #639740;
$custom-light: #92b678;
$custom-dark: #000000;

JSON

{
  "hex": "#639740",
  "rgb": {
    "r": 99,
    "g": 151,
    "b": 64
  },
  "hsl": {
    "h": 95.862,
    "s": 40.465,
    "l": 42.157
  },
  "oklch": {
    "l": 0.61996,
    "c": 0.13125,
    "h": 134.5
  },
  "luminance": 0.25156
}

Semantic roles & 50–950 ramp

primary

#639740

secondary

#9F7DB6

accent

#57D0A0

background

#F9FBF7

surface

#F1F6ED

border

#CBD0C8

text

#0D1109

muted

#7E807B

Preview Lab

Preview with #639740

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

Preview Lab → · Contrast checker → · Palette generator →