#283F18#283F18

#283F18 is a dark, moderate yellow-green. Relative luminance 0.041; OKLCH L 33.8% C 0.069 H 134.1°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#283F18
RGB	rgb(40, 63, 24)
HSL	hsl(95, 45%, 17%)
HSV	hsv(95, 62%, 25%)
CMYK	cmyk(36.5%, 0%, 61.9%, 75.3%)
CIE-LAB	lab(23.91, -17.28, 20.85)
CIE-LCH	lch(23.91, 27.07, 129.65°)
OKLab	oklab(33.81% -0.0479 0.0494)
OKLCH	oklch(33.81% 0.069 134.1)
XYZ	xyz(2.8174, 4.0720, 1.5015)
Luminance	0.0407 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Hunter Green (survey)

Forest Green (survey)

#06470C

ΔE00 7.07

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#283F18 #2F183F

analogous

#3C3F18 #283F18 #183F1C

triadic

#283F18 #18283F #3F1828

tetradic

#283F18 #183C3F #2F183F #3F1C18

square

#283F18 #183C3F #2F183F #3F1C18

split-complementary

#283F18 #1C183F #3F183C

monochromatic

#0E1608 #0E1608 #283F18 #446B29 #60983A

Accessibility & contrast

On white

11.57

#283F18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#283F18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #283F18

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##283F18	#FFFFFF	#000000	##FFFFFF
##283F18	1.00	11.57	1.81	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#423A14

Deuteranopia (green-blind)

#3E381B

Tritanopia (blue-blind)

#283D36

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #283f18;
/* rgb */ color: rgb(40, 63, 24);
/* oklch */ color: oklch(33.8% 0.069 134.1);

Tailwind

colors: {
  custom: {
    50: '#637456',
    500: '#283f18',
    950: '#000000',
  },
}

SCSS

$custom: #283f18;
$custom-light: #637456;
$custom-dark: #000000;

JSON

{
  "hex": "#283f18",
  "rgb": {
    "r": 40,
    "g": 63,
    "b": 24
  },
  "hsl": {
    "h": 95.385,
    "s": 44.828,
    "l": 17.059
  },
  "oklch": {
    "l": 0.33813,
    "c": 0.06877,
    "h": 134.1
  },
  "luminance": 0.04072
}

Semantic roles & 50–950 ramp

primary

#283F18

secondary

#5E3D75

accent

#53D5A0

background

#F6F7F5

surface

#EBEDE9

border

#C6C8C5

text

#050803

muted

#7A7B78

Preview Lab

Preview with #283F18

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

Preview Lab → · Contrast checker → · Palette generator →