#42BB51#42BB51

#42BB51 is a light, vivid green. Relative luminance 0.373; OKLCH L 70.1% C 0.181 H 145.4°. Best body text is #000000 at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#42BB51
RGB	rgb(66, 187, 81)
HSL	hsl(127, 48%, 50%)
HSV	hsv(127, 65%, 73%)
CMYK	cmyk(64.7%, 0%, 56.7%, 26.7%)
CIE-LAB	lab(67.49, -55.23, 43.38)
CIE-LCH	lch(67.49, 70.23, 141.86°)
OKLab	oklab(70.13% -0.1494 0.1031)
OKLCH	oklch(70.13% 0.182 145.4)
XYZ	xyz(21.5009, 37.2908, 13.8477)
Luminance	0.3729 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42BB51 #BB42AC

analogous

#70BB42 #42BB51 #42BB8E

triadic

#42BB51 #5142BB #BB5142

tetradic

#42BB51 #4270BB #BB42AC #BB8E42

square

#42BB51 #4270BB #BB42AC #BB8E42

split-complementary

#42BB51 #8E42BB #BB4270

monochromatic

#22612A #328E3D #42BB51 #6ECC7A #9CDCA3

Accessibility & contrast

On white

2.48

#42BB51 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.46

#42BB51 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42BB51

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42BB51	#FFFFFF	#000000	##000000
##42BB51	1.00	2.48	8.46	8.46
#FFFFFF	2.48	1.00	21.00	21.00
#000000	8.46	21.00	1.00	1.00
##000000	8.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BEAB47

Deuteranopia (green-blind)

#AFA059

Tritanopia (blue-blind)

#21B6A4

Achromatopsia (no color)

#A4A4A4

Design tokens & code

CSS

--color: #42bb51;
/* rgb */ color: rgb(66, 187, 81);
/* oklch */ color: oklch(70.1% 0.181 145.4);

Tailwind

colors: {
  custom: {
    50: '#84d085',
    500: '#42bb51',
    950: '#000000',
  },
}

SCSS

$custom: #42bb51;
$custom-light: #84d085;
$custom-dark: #000000;

JSON

{
  "hex": "#42bb51",
  "rgb": {
    "r": 66,
    "g": 187,
    "b": 81
  },
  "hsl": {
    "h": 127.438,
    "s": 47.826,
    "l": 49.608
  },
  "oklch": {
    "l": 0.7013,
    "c": 0.1815,
    "h": 145.4
  },
  "luminance": 0.37293
}

Semantic roles & 50–950 ramp

primary

#42BB51

secondary

#C891C1

accent

#50C7D7

background

#F8FCF8

surface

#F0F9EF

border

#CBD2CA

text

#0C140B

muted

#7D827C

Preview Lab

Preview with #42BB51

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

Preview Lab → · Contrast checker → · Palette generator →