#178D51#178D51

#178D51 is a mid, vivid green. Relative luminance 0.198; OKLCH L 56.8% C 0.135 H 154.4°. Best body text is #000000 at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#178D51
RGB	rgb(23, 141, 81)
HSL	hsl(149, 72%, 32%)
HSV	hsv(149, 84%, 55%)
CMYK	cmyk(83.7%, 0%, 42.6%, 44.7%)
CIE-LAB	lab(51.64, -45.24, 23.44)
CIE-LCH	lch(51.64, 50.95, 152.61°)
OKLab	oklab(56.77% -0.1217 0.0582)
OKLCH	oklch(56.77% 0.135 154.4)
XYZ	xyz(11.3623, 19.8246, 11.0107)
Luminance	0.1983 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178D51 #8D1753

analogous

#188D17 #178D51 #178D8C

triadic

#178D51 #51178D #8D5117

tetradic

#178D51 #17188D #8D1753 #8D8C17

square

#178D51 #17188D #8D1753 #8D8C17

split-complementary

#178D51 #8C178D #8D1718

monochromatic

#062415 #0E5833 #178D51 #20C26F #3FE08E

Accessibility & contrast

On white

4.23

#178D51 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.97

#178D51 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178D51

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178D51	#FFFFFF	#000000	##000000
##178D51	1.00	4.23	4.97	4.97
#FFFFFF	4.23	1.00	21.00	21.00
#000000	4.97	21.00	1.00	1.00
##000000	4.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8D814D

Deuteranopia (green-blind)

#7F7755

Tritanopia (blue-blind)

#008B7E

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #178d51;
/* rgb */ color: rgb(23, 141, 81);
/* oklch */ color: oklch(56.8% 0.135 154.4);

Tailwind

colors: {
  custom: {
    50: '#6baf82',
    500: '#178d51',
    950: '#000000',
  },
}

SCSS

$custom: #178d51;
$custom-light: #6baf82;
$custom-dark: #000000;

JSON

{
  "hex": "#178d51",
  "rgb": {
    "r": 23,
    "g": 141,
    "b": 81
  },
  "hsl": {
    "h": 149.492,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.56773,
    "c": 0.13487,
    "h": 154.4
  },
  "luminance": 0.19826
}

Semantic roles & 50–950 ramp

primary

#178D51

secondary

#C04081

accent

#3995EF

background

#F7FAF8

surface

#EDF5EF

border

#C8CFCA

text

#08100A

muted

#7B7F7C

Preview Lab

Preview with #178D51

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

Preview Lab → · Contrast checker → · Palette generator →