#178F31#178F31

#178F31 is a mid, vivid green. Relative luminance 0.200; OKLCH L 56.8% C 0.166 H 145.8°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#178F31
RGB	rgb(23, 143, 49)
HSL	hsl(133, 72%, 33%)
HSV	hsv(133, 84%, 56%)
CMYK	cmyk(83.9%, 0%, 65.7%, 43.9%)
CIE-LAB	lab(51.89, -50.99, 40.07)
CIE-LCH	lch(51.89, 64.85, 141.84°)
OKLab	oklab(56.85% -0.1373 0.0933)
OKLCH	oklch(56.85% 0.166 145.8)
XYZ	xyz(10.7294, 20.0475, 6.2092)
Luminance	0.2005 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178F31 #8F1775

analogous

#398F17 #178F31 #178F6D

triadic

#178F31 #31178F #8F3117

tetradic

#178F31 #17398F #8F1775 #8F6D17

square

#178F31 #17398F #8F1775 #8F6D17

split-complementary

#178F31 #6D178F #8F1739

monochromatic

#06260D #0F5A1F #178F31 #1FC443 #40E063

Accessibility & contrast

On white

4.19

#178F31 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#178F31 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178F31

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178F31	#FFFFFF	#000000	##000000
##178F31	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#918126

Deuteranopia (green-blind)

#847839

Tritanopia (blue-blind)

#008B7B

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #178f31;
/* rgb */ color: rgb(23, 143, 49);
/* oklch */ color: oklch(56.8% 0.166 145.8);

Tailwind

colors: {
  custom: {
    50: '#6cb16d',
    500: '#178f31',
    950: '#000000',
  },
}

SCSS

$custom: #178f31;
$custom-light: #6cb16d;
$custom-dark: #000000;

JSON

{
  "hex": "#178f31",
  "rgb": {
    "r": 23,
    "g": 143,
    "b": 49
  },
  "hsl": {
    "h": 133,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.56845,
    "c": 0.16598,
    "h": 145.8
  },
  "luminance": 0.20049
}

Semantic roles & 50–950 ramp

primary

#178F31

secondary

#C141A5

accent

#39C8EF

background

#F7FBF6

surface

#EDF6EC

border

#C8D0C7

text

#081107

muted

#7B807A

Preview Lab

Preview with #178F31

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

Preview Lab → · Contrast checker → · Palette generator →