#3F661B#3F661B

#3F661B is a mid, moderate yellow-green. Relative luminance 0.106; OKLCH L 46.5% C 0.113 H 133.0°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3F661B
RGB	rgb(63, 102, 27)
HSL	hsl(91, 58%, 25%)
HSV	hsv(91, 74%, 40%)
CMYK	cmyk(38.2%, 0%, 73.5%, 60%)
CIE-LAB	lab(38.96, -27.34, 36.29)
CIE-LCH	lch(38.96, 45.44, 127.00°)
OKLab	oklab(46.46% -0.0767 0.0823)
OKLCH	oklch(46.46% 0.113 133)
XYZ	xyz(6.9990, 10.6383, 2.7213)
Luminance	0.1064 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F661B #421B66

analogous

#64661B #3F661B #1B661C

triadic

#3F661B #1B3F66 #661B3F

tetradic

#3F661B #1B6466 #421B66 #661C1B

square

#3F661B #1B6466 #421B66 #661C1B

split-complementary

#3F661B #1C1B66 #661B64

monochromatic

#0F1806 #21360E #3F661B #5D9628 #7BC735

Accessibility & contrast

On white

6.71

#3F661B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3F661B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F661B

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F661B	#FFFFFF	#000000	##FFFFFF
##3F661B	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A5E0F

Deuteranopia (green-blind)

#655B22

Tritanopia (blue-blind)

#3F6257

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3f661b;
/* rgb */ color: rgb(63, 102, 27);
/* oklch */ color: oklch(46.5% 0.113 133.0);

Tailwind

colors: {
  custom: {
    50: '#78925c',
    500: '#3f661b',
    950: '#000000',
  },
}

SCSS

$custom: #3f661b;
$custom-light: #78925c;
$custom-dark: #000000;

JSON

{
  "hex": "#3f661b",
  "rgb": {
    "r": 63,
    "g": 102,
    "b": 27
  },
  "hsl": {
    "h": 91.2,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.46462,
    "c": 0.1125,
    "h": 133
  },
  "luminance": 0.10639
}

Semantic roles & 50–950 ramp

primary

#3F661B

secondary

#70419B

accent

#46E197

background

#F7F9F5

surface

#EDF1E9

border

#C8CBC5

text

#090D04

muted

#7B7E79

Preview Lab

Preview with #3F661B

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

Preview Lab → · Contrast checker → · Palette generator →