#3F801C#3F801C

#3F801C is a mid, vivid yellow-green. Relative luminance 0.166; OKLCH L 53.6% C 0.147 H 137.1°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3F801C
RGB	rgb(63, 128, 28)
HSL	hsl(99, 64%, 31%)
HSV	hsv(99, 78%, 50%)
CMYK	cmyk(50.8%, 0%, 78.1%, 49.8%)
CIE-LAB	lab(47.72, -38.80, 44.67)
CIE-LCH	lch(47.72, 59.17, 130.98°)
OKLab	oklab(53.64% -0.1077 0.0999)
OKLCH	oklch(53.64% 0.147 137.1)
XYZ	xyz(9.9784, 16.5782, 3.7725)
Luminance	0.1658 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F801C #5D1C80

analogous

#71801C #3F801C #1C802B

triadic

#3F801C #1C3F80 #801C3F

tetradic

#3F801C #1C7180 #5D1C80 #802B1C

square

#3F801C #1C7180 #5D1C80 #802B1C

split-complementary

#3F801C #2B1C80 #801C71

monochromatic

#0E1C06 #264E11 #3F801C #58B227 #75D541

Accessibility & contrast

On white

4.87

#3F801C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#3F801C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F801C

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F801C	#FFFFFF	#000000	##FFFFFF
##3F801C	1.00	4.87	4.32	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#847505

Deuteranopia (green-blind)

#7C6F27

Tritanopia (blue-blind)

#3B7B6D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3f801c;
/* rgb */ color: rgb(63, 128, 28);
/* oklch */ color: oklch(53.6% 0.147 137.1);

Tailwind

colors: {
  custom: {
    50: '#7ba560',
    500: '#3f801c',
    950: '#000000',
  },
}

SCSS

$custom: #3f801c;
$custom-light: #7ba560;
$custom-dark: #000000;

JSON

{
  "hex": "#3f801c",
  "rgb": {
    "r": 63,
    "g": 128,
    "b": 28
  },
  "hsl": {
    "h": 99,
    "s": 64.103,
    "l": 30.588
  },
  "oklch": {
    "l": 0.53644,
    "c": 0.1469,
    "h": 137.1
  },
  "luminance": 0.16579
}

Semantic roles & 50–950 ramp

primary

#3F801C

secondary

#8D44B3

accent

#41E7AD

background

#F7FAF5

surface

#EEF4EA

border

#C9CEC6

text

#0A0F05

muted

#7C7F79

Preview Lab

Preview with #3F801C

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

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