#178C21#178C21

#178C21 is a mid, vivid green. Relative luminance 0.190; OKLCH L 55.8% C 0.173 H 143.7°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#178C21
RGB	rgb(23, 140, 33)
HSL	hsl(125, 72%, 32%)
HSV	hsv(125, 84%, 55%)
CMYK	cmyk(83.6%, 0%, 76.4%, 45.1%)
CIE-LAB	lab(50.74, -51.60, 45.48)
CIE-LCH	lch(50.74, 68.78, 138.61°)
OKLab	oklab(55.85% -0.1396 0.1027)
OKLCH	oklch(55.85% 0.173 143.7)
XYZ	xyz(10.0053, 19.0469, 4.5877)
Luminance	0.1905 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178C21 #8C1782

analogous

#488C17 #178C21 #178C5C

triadic

#178C21 #21178C #8C2117

tetradic

#178C21 #17488C #8C1782 #8C5C17

square

#178C21 #17488C #8C1782 #8C5C17

split-complementary

#178C21 #5C178C #8C1748

monochromatic

#062308 #0E5715 #178C21 #20C12D #3EDF4C

Accessibility & contrast

On white

4.37

#178C21 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#178C21 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178C21

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178C21	#FFFFFF	#000000	##000000
##178C21	1.00	4.37	4.81	4.81
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8F7E0B

Deuteranopia (green-blind)

#83752D

Tritanopia (blue-blind)

#008877

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #178c21;
/* rgb */ color: rgb(23, 140, 33);
/* oklch */ color: oklch(55.8% 0.173 143.7);

Tailwind

colors: {
  custom: {
    50: '#6caf64',
    500: '#178c21',
    950: '#000000',
  },
}

SCSS

$custom: #178c21;
$custom-light: #6caf64;
$custom-dark: #000000;

JSON

{
  "hex": "#178c21",
  "rgb": {
    "r": 23,
    "g": 140,
    "b": 33
  },
  "hsl": {
    "h": 125.128,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.55849,
    "c": 0.17332,
    "h": 143.7
  },
  "luminance": 0.19048
}

Semantic roles & 50–950 ramp

primary

#178C21

secondary

#BF3FB4

accent

#39DFEF

background

#F7FAF6

surface

#EDF5EB

border

#C8CFC6

text

#081006

muted

#7B7F7A

Preview Lab

Preview with #178C21

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

Preview Lab → · Contrast checker → · Palette generator →