#40C251#40C251

#40C251 is a light, vivid green. Relative luminance 0.403; OKLCH L 71.9% C 0.191 H 145.3°. Best body text is #000000 at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#40C251
RGB	rgb(64, 194, 81)
HSL	hsl(128, 52%, 51%)
HSV	hsv(128, 67%, 76%)
CMYK	cmyk(67%, 0%, 58.2%, 23.9%)
CIE-LAB	lab(69.66, -58.14, 45.91)
CIE-LCH	lch(69.66, 74.08, 141.70°)
OKLab	oklab(71.9% -0.1571 0.1086)
OKLCH	oklch(71.9% 0.191 145.3)
XYZ	xyz(22.8898, 40.2652, 14.3486)
Luminance	0.4027 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40C251 #C240B1

analogous

#70C240 #40C251 #40C292

triadic

#40C251 #5140C2 #C25140

tetradic

#40C251 #4070C2 #C240B1 #C29240

square

#40C251 #4070C2 #C240B1 #C29240

split-complementary

#40C251 #9240C2 #C24070

monochromatic

#21672A #30953D #40C251 #6ED17B #9DE0A6

Accessibility & contrast

On white

2.32

#40C251 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.05

#40C251 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40C251

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40C251	#FFFFFF	#000000	##000000
##40C251	1.00	2.32	9.05	9.05
#FFFFFF	2.32	1.00	21.00	21.00
#000000	9.05	21.00	1.00	1.00
##000000	9.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C5B146

Deuteranopia (green-blind)

#B5A65A

Tritanopia (blue-blind)

#16BDA9

Achromatopsia (no color)

#AAAAAA

Design tokens & code

CSS

--color: #40c251;
/* rgb */ color: rgb(64, 194, 81);
/* oklch */ color: oklch(71.9% 0.191 145.3);

Tailwind

colors: {
  custom: {
    50: '#85d685',
    500: '#40c251',
    950: '#000000',
  },
}

SCSS

$custom: #40c251;
$custom-light: #85d685;
$custom-dark: #000000;

JSON

{
  "hex": "#40c251",
  "rgb": {
    "r": 64,
    "g": 194,
    "b": 81
  },
  "hsl": {
    "h": 127.846,
    "s": 51.587,
    "l": 50.588
  },
  "oklch": {
    "l": 0.71904,
    "c": 0.19101,
    "h": 145.3
  },
  "luminance": 0.40268
}

Semantic roles & 50–950 ramp

primary

#40C251

secondary

#CC92C4

accent

#4DC8DB

background

#F8FDF8

surface

#F0FAEF

border

#CBD3CA

text

#0C140B

muted

#7D837C

Preview Lab

Preview with #40C251

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

Preview Lab → · Contrast checker → · Palette generator →