#3F591B#3F591B

#3F591B is a dark, moderate yellow-green. Relative luminance 0.083; OKLCH L 42.9% C 0.094 H 129.1°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F591B
RGB	rgb(63, 89, 27)
HSL	hsl(85, 53%, 23%)
HSV	hsv(85, 70%, 35%)
CMYK	cmyk(29.2%, 0%, 69.7%, 65.1%)
CIE-LAB	lab(34.56, -20.86, 31.66)
CIE-LCH	lch(34.56, 37.91, 123.38°)
OKLab	oklab(42.88% -0.059 0.0725)
OKLCH	oklch(42.88% 0.094 129.1)
XYZ	xyz(5.8201, 8.2805, 2.3284)
Luminance	0.0828 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F591B #351B59

analogous

#59541B #3F591B #20591B

triadic

#3F591B #1B3F59 #591B3F

tetradic

#3F591B #1B5954 #351B59 #591B20

square

#3F591B #1B5954 #351B59 #591B20

split-complementary

#3F591B #1B2059 #541B59

monochromatic

#111707 #1E2A0D #3F591B #608829 #81B737

Accessibility & contrast

On white

7.91

#3F591B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3F591B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F591B

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F591B	#FFFFFF	#000000	##FFFFFF
##3F591B	1.00	7.91	2.66	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5213

Deuteranopia (green-blind)

#5A5120

Tritanopia (blue-blind)

#41554C

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3f591b;
/* rgb */ color: rgb(63, 89, 27);
/* oklch */ color: oklch(42.9% 0.094 129.1);

Tailwind

colors: {
  custom: {
    50: '#76885b',
    500: '#3f591b',
    950: '#000000',
  },
}

SCSS

$custom: #3f591b;
$custom-light: #76885b;
$custom-dark: #000000;

JSON

{
  "hex": "#3f591b",
  "rgb": {
    "r": 63,
    "g": 89,
    "b": 27
  },
  "hsl": {
    "h": 85.161,
    "s": 53.448,
    "l": 22.745
  },
  "oklch": {
    "l": 0.42877,
    "c": 0.09351,
    "h": 129.1
  },
  "luminance": 0.08281
}

Semantic roles & 50–950 ramp

primary

#3F591B

secondary

#62418F

accent

#4BDD88

background

#F7F8F5

surface

#EDEFE9

border

#C8CAC5

text

#090B04

muted

#7B7C79

Preview Lab

Preview with #3F591B

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

Preview Lab → · Contrast checker → · Palette generator →