#283F1B#283F1B

#283F1B is a dark, moderate yellow-green. Relative luminance 0.041; OKLCH L 33.9% C 0.065 H 135.4°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#283F1B
RGB	rgb(40, 63, 27)
HSL	hsl(98, 40%, 18%)
HSV	hsv(98, 57%, 25%)
CMYK	cmyk(36.5%, 0%, 57.1%, 75.3%)
CIE-LAB	lab(23.95, -16.86, 19.14)
CIE-LCH	lch(23.95, 25.51, 131.38°)
OKLab	oklab(33.86% -0.0465 0.0459)
OKLCH	oklch(33.86% 0.065 135.4)
XYZ	xyz(2.8503, 4.0852, 1.6750)
Luminance	0.0408 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Hunter Green (survey)

Forest Green (survey)

#06470C

ΔE00 7.44

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F1B #321B3F

analogous

#3A3F1B #283F1B #1B3F20

triadic

#283F1B #1B283F #3F1B28

tetradic

#283F1B #1B3A3F #321B3F #3F201B

square

#283F1B #1B3A3F #321B3F #3F201B

split-complementary

#283F1B #201B3F #3F1B3A

monochromatic

#0E1509 #0E1509 #283F1B #436A2D #5E9540

Accessibility & contrast

On white

11.56

#283F1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#283F1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F1B

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F1B	#FFFFFF	#000000	##FFFFFF
##283F1B	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#413A18

Deuteranopia (green-blind)

#3E381D

Tritanopia (blue-blind)

#283D37

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #283f1b;
/* rgb */ color: rgb(40, 63, 27);
/* oklch */ color: oklch(33.9% 0.065 135.4);

Tailwind

colors: {
  custom: {
    50: '#637458',
    500: '#283f1b',
    950: '#000000',
  },
}

SCSS

$custom: #283f1b;
$custom-light: #637458;
$custom-dark: #000000;

JSON

{
  "hex": "#283f1b",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 27
  },
  "hsl": {
    "h": 98.333,
    "s": 40,
    "l": 17.647
  },
  "oklch": {
    "l": 0.33861,
    "c": 0.06533,
    "h": 135.4
  },
  "luminance": 0.04085
}

Semantic roles & 50–950 ramp

primary

#283F1B

secondary

#624174

accent

#58D0A5

background

#F6F7F5

surface

#EBEDE9

border

#C6C8C5

text

#050803

muted

#7A7B78

Preview Lab

Preview with #283F1B

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

Preview Lab → · Contrast checker → · Palette generator →