#3F641B#3F641B

#3F641B is a mid, moderate yellow-green. Relative luminance 0.102; OKLCH L 45.9% C 0.110 H 132.5°. Best body text is #FFFFFF at 6.89:1 contrast (WCAG AA passes).

Color values

HEX	#3F641B
RGB	rgb(63, 100, 27)
HSL	hsl(90, 57%, 25%)
HSV	hsv(90, 73%, 39%)
CMYK	cmyk(37%, 0%, 73%, 60.8%)
CIE-LAB	lab(38.29, -26.38, 35.59)
CIE-LCH	lch(38.29, 44.30, 126.55°)
OKLab	oklab(45.91% -0.0741 0.0808)
OKLCH	oklch(45.91% 0.11 132.5)
XYZ	xyz(6.8048, 10.2500, 2.6566)
Luminance	0.1025 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F641B #401B64

analogous

#63641B #3F641B #1B641C

triadic

#3F641B #1B3F64 #641B3F

tetradic

#3F641B #1B6364 #401B64 #641C1B

square

#3F641B #1B6364 #401B64 #641C1B

split-complementary

#3F641B #1C1B64 #641B63

monochromatic

#0F1807 #21340E #3F641B #5D9428 #7CC435

Accessibility & contrast

On white

6.89

#3F641B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#3F641B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F641B

6.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F641B	#FFFFFF	#000000	##FFFFFF
##3F641B	1.00	6.89	3.05	6.89
#FFFFFF	6.89	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#685C10

Deuteranopia (green-blind)

#635921

Tritanopia (blue-blind)

#406055

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f641b;
/* rgb */ color: rgb(63, 100, 27);
/* oklch */ color: oklch(45.9% 0.110 132.5);

Tailwind

colors: {
  custom: {
    50: '#77905c',
    500: '#3f641b',
    950: '#000000',
  },
}

SCSS

$custom: #3f641b;
$custom-light: #77905c;
$custom-dark: #000000;

JSON

{
  "hex": "#3f641b",
  "rgb": {
    "r": 63,
    "g": 100,
    "b": 27
  },
  "hsl": {
    "h": 90.411,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.45909,
    "c": 0.10965,
    "h": 132.5
  },
  "luminance": 0.1025
}

Semantic roles & 50–950 ramp

primary

#3F641B

secondary

#6E4199

accent

#47E195

background

#F7F8F5

surface

#EDF0E9

border

#C8CBC5

text

#090C04

muted

#7B7D79

Preview Lab

Preview with #3F641B

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

Preview Lab → · Contrast checker → · Palette generator →