#3F570F#3F570F

#3F570F is a dark, moderate yellow-green. Relative luminance 0.079; OKLCH L 42.2% C 0.100 H 126.9°. Best body text is #FFFFFF at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#3F570F
RGB	rgb(63, 87, 15)
HSL	hsl(80, 71%, 20%)
HSV	hsv(80, 83%, 34%)
CMYK	cmyk(27.6%, 0%, 82.8%, 65.9%)
CIE-LAB	lab(33.79, -20.70, 35.99)
CIE-LCH	lch(33.79, 41.52, 119.90°)
OKLab	oklab(42.22% -0.0597 0.0796)
OKLCH	oklch(42.22% 0.1 126.9)
XYZ	xyz(5.5443, 7.9075, 1.6860)
Luminance	0.0791 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F570F #270F57

analogous

#574B0F #3F570F #1B570F

triadic

#3F570F #0F3F57 #570F3F

tetradic

#3F570F #0F574B #270F57 #570F1B

square

#3F570F #0F574B #270F57 #570F1B

split-complementary

#3F570F #0F1B57 #4B0F57

monochromatic

#131A05 #192306 #3F570F #658B18 #8BBF21

Accessibility & contrast

On white

8.13

#3F570F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#3F570F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F570F

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F570F	#FFFFFF	#000000	##FFFFFF
##3F570F	1.00	8.13	2.58	8.13
#FFFFFF	8.13	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5001

Deuteranopia (green-blind)

#594F16

Tritanopia (blue-blind)

#42534A

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #3f570f;
/* rgb */ color: rgb(63, 87, 15);
/* oklch */ color: oklch(42.2% 0.100 126.9);

Tailwind

colors: {
  custom: {
    50: '#778654',
    500: '#3f570f',
    950: '#000000',
  },
}

SCSS

$custom: #3f570f;
$custom-light: #778654;
$custom-dark: #000000;

JSON

{
  "hex": "#3f570f",
  "rgb": {
    "r": 63,
    "g": 87,
    "b": 15
  },
  "hsl": {
    "h": 80,
    "s": 70.588,
    "l": 20
  },
  "oklch": {
    "l": 0.42222,
    "c": 0.09951,
    "h": 126.9
  },
  "luminance": 0.07908
}

Semantic roles & 50–950 ramp

primary

#3F570F

secondary

#513191

accent

#3AED76

background

#F7F8F5

surface

#EDEFE9

border

#C8CAC5

text

#090B03

muted

#7B7C78

Preview Lab

Preview with #3F570F

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

Preview Lab → · Contrast checker → · Palette generator →