#40B378#40B378

#40B378 is a light, vivid green. Relative luminance 0.347; OKLCH L 68.7% C 0.136 H 157.2°. Best body text is #000000 at 7.94:1 contrast (WCAG AA passes).

Color values

HEX	#40B378
RGB	rgb(64, 179, 120)
HSL	hsl(149, 47%, 48%)
HSV	hsv(149, 64%, 70%)
CMYK	cmyk(64.2%, 0%, 33%, 29.8%)
CIE-LAB	lab(65.50, -46.07, 20.86)
CIE-LCH	lch(65.50, 50.57, 155.64°)
OKLab	oklab(68.66% -0.1252 0.0527)
OKLCH	oklch(68.66% 0.136 157.2)
XYZ	xyz(21.6227, 34.6840, 23.3208)
Luminance	0.3469 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#40B378 #B3407B

analogous

#42B340 #40B378 #40B3B1

triadic

#40B378 #7840B3 #B37840

tetradic

#40B378 #4042B3 #B3407B #B3B140

square

#40B378 #4042B3 #B3407B #B3B140

split-complementary

#40B378 #B140B3 #B34042

monochromatic

#20593C #30865A #40B378 #67C997 #94D9B6

Accessibility & contrast

On white

2.65

#40B378 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.94

#40B378 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #40B378

7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##40B378	#FFFFFF	#000000	##000000
##40B378	1.00	2.65	7.94	7.94
#FFFFFF	2.65	1.00	21.00	21.00
#000000	7.94	21.00	1.00	1.00
##000000	7.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2A674

Deuteranopia (green-blind)

#A39B7C

Tritanopia (blue-blind)

#00B2A4

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #40b378;
/* rgb */ color: rgb(64, 179, 120);
/* oklch */ color: oklch(68.7% 0.136 157.2);

Tailwind

colors: {
  custom: {
    50: '#81ca9f',
    500: '#40b378',
    950: '#000000',
  },
}

SCSS

$custom: #40b378;
$custom-light: #81ca9f;
$custom-dark: #000000;

JSON

{
  "hex": "#40b378",
  "rgb": {
    "r": 64,
    "g": 179,
    "b": 120
  },
  "hsl": {
    "h": 149.217,
    "s": 47.325,
    "l": 47.647
  },
  "oklch": {
    "l": 0.68665,
    "c": 0.13586,
    "h": 157.2
  },
  "luminance": 0.34686
}

Semantic roles & 50–950 ramp

primary

#40B378

secondary

#C48AA8

accent

#5196D7

background

#F8FCF9

surface

#F0F8F2

border

#CBD1CC

text

#0B130E

muted

#7C827E

Preview Lab

Preview with #40B378

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

Preview Lab → · Contrast checker → · Palette generator →