#40801B#40801B

#40801B is a mid, vivid yellow-green. Relative luminance 0.166; OKLCH L 53.7% C 0.147 H 136.8°. Best body text is #FFFFFF at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#40801B
RGB	rgb(64, 128, 27)
HSL	hsl(98, 65%, 30%)
HSV	hsv(98, 79%, 50%)
CMYK	cmyk(50%, 0%, 78.9%, 49.8%)
CIE-LAB	lab(47.76, -38.54, 45.07)
CIE-LCH	lch(47.76, 59.31, 130.54°)
OKLab	oklab(53.68% -0.1071 0.1006)
OKLCH	oklch(53.68% 0.147 136.8)
XYZ	xyz(10.0311, 16.6068, 3.7136)
Luminance	0.1661 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40801B #5B1B80

analogous

#72801B #40801B #1B8029

triadic

#40801B #1B4080 #801B40

tetradic

#40801B #1B7280 #5B1B80 #80291B

square

#40801B #1B7280 #5B1B80 #80291B

split-complementary

#40801B #291B80 #801B72

monochromatic

#0D1B06 #274D10 #40801B #59B326 #76D63F

Accessibility & contrast

On white

4.86

#40801B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.32

#40801B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #40801B

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40801B	#FFFFFF	#000000	##FFFFFF
##40801B	1.00	4.86	4.32	4.86
#FFFFFF	4.86	1.00	21.00	1.00
#000000	4.32	21.00	1.00	21.00
##FFFFFF	4.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#857503

Deuteranopia (green-blind)

#7C6F26

Tritanopia (blue-blind)

#3C7B6D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #40801b;
/* rgb */ color: rgb(64, 128, 27);
/* oklch */ color: oklch(53.7% 0.147 136.8);

Tailwind

colors: {
  custom: {
    50: '#7ca560',
    500: '#40801b',
    950: '#000000',
  },
}

SCSS

$custom: #40801b;
$custom-light: #7ca560;
$custom-dark: #000000;

JSON

{
  "hex": "#40801b",
  "rgb": {
    "r": 64,
    "g": 128,
    "b": 27
  },
  "hsl": {
    "h": 98.02,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.53684,
    "c": 0.14695,
    "h": 136.8
  },
  "luminance": 0.16607
}

Semantic roles & 50–950 ramp

primary

#40801B

secondary

#8A43B4

accent

#40E8AA

background

#F7FAF5

surface

#EEF4EA

border

#C9CEC6

text

#0A0F05

muted

#7C7F79

Preview Lab

Preview with #40801B

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

Preview Lab → · Contrast checker → · Palette generator →