#3F580F#3F580F

#3F580F is a dark, moderate yellow-green. Relative luminance 0.081; OKLCH L 42.5% C 0.101 H 127.3°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#3F580F
RGB	rgb(63, 88, 15)
HSL	hsl(81, 71%, 20%)
HSV	hsv(81, 83%, 35%)
CMYK	cmyk(28.4%, 0%, 83%, 65.5%)
CIE-LAB	lab(34.13, -21.22, 36.31)
CIE-LCH	lch(34.13, 42.06, 120.30°)
OKLab	oklab(42.5% -0.0611 0.0803)
OKLCH	oklch(42.5% 0.101 127.3)
XYZ	xyz(5.6259, 8.0706, 1.7132)
Luminance	0.0807 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F580F #280F58

analogous

#584C0F #3F580F #1A580F

triadic

#3F580F #0F3F58 #580F3F

tetradic

#3F580F #0F584C #280F58 #580F1A

square

#3F580F #0F584C #280F58 #580F1A

split-complementary

#3F580F #0F1A58 #4C0F58

monochromatic

#131A04 #1A2406 #3F580F #648C18 #8AC121

Accessibility & contrast

On white

8.03

#3F580F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#3F580F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F580F

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F580F	#FFFFFF	#000000	##FFFFFF
##3F580F	1.00	8.03	2.61	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5100

Deuteranopia (green-blind)

#5A5016

Tritanopia (blue-blind)

#42544A

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f580f;
/* rgb */ color: rgb(63, 88, 15);
/* oklch */ color: oklch(42.5% 0.101 127.3);

Tailwind

colors: {
  custom: {
    50: '#778754',
    500: '#3f580f',
    950: '#000000',
  },
}

SCSS

$custom: #3f580f;
$custom-light: #778754;
$custom-dark: #000000;

JSON

{
  "hex": "#3f580f",
  "rgb": {
    "r": 63,
    "g": 88,
    "b": 15
  },
  "hsl": {
    "h": 80.548,
    "s": 70.874,
    "l": 20.196
  },
  "oklch": {
    "l": 0.42498,
    "c": 0.1009,
    "h": 127.3
  },
  "luminance": 0.08071
}

Semantic roles & 50–950 ramp

primary

#3F580F

secondary

#523192

accent

#3AEE78

background

#F7F8F5

surface

#EDEFE9

border

#C8CAC5

text

#090B03

muted

#7B7C78

Preview Lab

Preview with #3F580F

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

Preview Lab → · Contrast checker → · Palette generator →