#178D21#178D21

#178D21 is a mid, vivid green. Relative luminance 0.193; OKLCH L 56.1% C 0.174 H 143.6°. Best body text is #000000 at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#178D21
RGB	rgb(23, 141, 33)
HSL	hsl(125, 72%, 32%)
HSV	hsv(125, 84%, 55%)
CMYK	cmyk(83.7%, 0%, 76.6%, 44.7%)
CIE-LAB	lab(51.08, -51.92, 45.82)
CIE-LCH	lch(51.08, 69.25, 138.57°)
OKLab	oklab(56.13% -0.1405 0.1034)
OKLCH	oklch(56.13% 0.174 143.6)
XYZ	xyz(10.1521, 19.3405, 4.6366)
Luminance	0.1934 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178D21 #8D1783

analogous

#488D17 #178D21 #178D5C

triadic

#178D21 #21178D #8D2117

tetradic

#178D21 #17488D #8D1783 #8D5C17

square

#178D21 #17488D #8D1783 #8D5C17

split-complementary

#178D21 #5C178D #8D1748

monochromatic

#062408 #0E5815 #178D21 #20C22D #3FE04C

Accessibility & contrast

On white

4.31

#178D21 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.87

#178D21 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178D21

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178D21	#FFFFFF	#000000	##000000
##178D21	1.00	4.31	4.87	4.87
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.87	21.00	1.00	1.00
##000000	4.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#907F0A

Deuteranopia (green-blind)

#84762D

Tritanopia (blue-blind)

#008978

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #178d21;
/* rgb */ color: rgb(23, 141, 33);
/* oklch */ color: oklch(56.1% 0.174 143.6);

Tailwind

colors: {
  custom: {
    50: '#6db064',
    500: '#178d21',
    950: '#000000',
  },
}

SCSS

$custom: #178d21;
$custom-light: #6db064;
$custom-dark: #000000;

JSON

{
  "hex": "#178d21",
  "rgb": {
    "r": 23,
    "g": 141,
    "b": 33
  },
  "hsl": {
    "h": 125.085,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.56133,
    "c": 0.17445,
    "h": 143.6
  },
  "luminance": 0.19342
}

Semantic roles & 50–950 ramp

primary

#178D21

secondary

#C040B5

accent

#39DFEF

background

#F7FAF6

surface

#EDF5EB

border

#C8CFC6

text

#081106

muted

#7B807A

Preview Lab

Preview with #178D21

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

Preview Lab → · Contrast checker → · Palette generator →