#3F571B#3F571B

#3F571B is a dark, moderate yellow-green. Relative luminance 0.080; OKLCH L 42.3% C 0.091 H 128.3°. Best body text is #FFFFFF at 8.11:1 contrast (WCAG AA passes).

Color values

HEX	#3F571B
RGB	rgb(63, 87, 27)
HSL	hsl(84, 53%, 22%)
HSV	hsv(84, 69%, 34%)
CMYK	cmyk(27.6%, 0%, 69%, 65.9%)
CIE-LAB	lab(33.88, -19.81, 30.93)
CIE-LCH	lch(33.88, 36.73, 122.64°)
OKLab	oklab(42.33% -0.0561 0.071)
OKLCH	oklch(42.33% 0.091 128.3)
XYZ	xyz(5.6559, 7.9522, 2.2736)
Luminance	0.0795 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F571B #331B57

analogous

#57511B #3F571B #21571B

triadic

#3F571B #1B3F57 #571B3F

tetradic

#3F571B #1B5751 #331B57 #571B21

square

#3F571B #1B5751 #331B57 #571B21

split-complementary

#3F571B #1B2157 #511B57

monochromatic

#111707 #1D280D #3F571B #618629 #83B438

Accessibility & contrast

On white

8.11

#3F571B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#3F571B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F571B

8.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F571B	#FFFFFF	#000000	##FFFFFF
##3F571B	1.00	8.11	2.59	8.11
#FFFFFF	8.11	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5113

Deuteranopia (green-blind)

#584F20

Tritanopia (blue-blind)

#41534B

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f571b;
/* rgb */ color: rgb(63, 87, 27);
/* oklch */ color: oklch(42.3% 0.091 128.3);

Tailwind

colors: {
  custom: {
    50: '#76865a',
    500: '#3f571b',
    950: '#000000',
  },
}

SCSS

$custom: #3f571b;
$custom-light: #76865a;
$custom-dark: #000000;

JSON

{
  "hex": "#3f571b",
  "rgb": {
    "r": 63,
    "g": 87,
    "b": 27
  },
  "hsl": {
    "h": 84,
    "s": 52.632,
    "l": 22.353
  },
  "oklch": {
    "l": 0.42327,
    "c": 0.09051,
    "h": 128.3
  },
  "luminance": 0.07952
}

Semantic roles & 50–950 ramp

primary

#3F571B

secondary

#5F418D

accent

#4CDC85

background

#F7F8F5

surface

#EDEFE9

border

#C8CAC5

text

#090B04

muted

#7B7C79

Preview Lab

Preview with #3F571B

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

Preview Lab → · Contrast checker → · Palette generator →