#556B18#556B18

#556B18 is a mid, moderate yellow-green. Relative luminance 0.125; OKLCH L 49.3% C 0.109 H 123.6°. Best body text is #FFFFFF at 6.00:1 contrast (WCAG AA passes).

Color values

HEX	#556B18
RGB	rgb(85, 107, 24)
HSL	hsl(76, 63%, 26%)
HSV	hsv(76, 78%, 42%)
CMYK	cmyk(20.6%, 0%, 77.6%, 58%)
CIE-LAB	lab(42.02, -20.77, 41.03)
CIE-LCH	lch(42.02, 45.99, 116.85°)
OKLab	oklab(49.31% -0.0605 0.0912)
OKLCH	oklch(49.31% 0.109 123.6)
XYZ	xyz(9.1690, 12.5126, 2.7961)
Luminance	0.1251 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#556B18 #2E186B

analogous

#6B5718 #556B18 #2B6B18

triadic

#556B18 #18556B #6B1855

tetradic

#556B18 #186B57 #2E186B #6B182B

square

#556B18 #186B57 #2E186B #6B182B

split-complementary

#556B18 #182B6B #57186B

monochromatic

#141906 #2D390D #556B18 #7D9D23 #A4CF2E

Accessibility & contrast

On white

6.00

#556B18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.50

#556B18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #556B18

6.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##556B18	#FFFFFF	#000000	##FFFFFF
##556B18	1.00	6.00	3.50	6.00
#FFFFFF	6.00	1.00	21.00	1.00
#000000	3.50	21.00	1.00	21.00
##FFFFFF	6.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#726407

Deuteranopia (green-blind)

#6F6320

Tritanopia (blue-blind)

#5A655B

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #556b18;
/* rgb */ color: rgb(85, 107, 24);
/* oklch */ color: oklch(49.3% 0.109 123.6);

Tailwind

colors: {
  custom: {
    50: '#88955c',
    500: '#556b18',
    950: '#000000',
  },
}

SCSS

$custom: #556b18;
$custom-light: #88955c;
$custom-dark: #000000;

JSON

{
  "hex": "#556b18",
  "rgb": {
    "r": 85,
    "g": 107,
    "b": 24
  },
  "hsl": {
    "h": 75.904,
    "s": 63.359,
    "l": 25.686
  },
  "oklch": {
    "l": 0.4931,
    "c": 0.10946,
    "h": 123.6
  },
  "luminance": 0.12513
}

Semantic roles & 50–950 ramp

primary

#556B18

secondary

#583EA1

accent

#41E66D

background

#F8F9F5

surface

#F0F1E9

border

#CBCBC5

text

#0C0D04

muted

#7D7E79

Preview Lab

Preview with #556B18

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

Preview Lab → · Contrast checker → · Palette generator →