#51E591#51E591

#51E591 is a very light, vivid green. Relative luminance 0.598; OKLCH L 82.3% C 0.173 H 154.6°. Best body text is #000000 at 12.97:1 contrast (WCAG AA passes).

Color values

HEX	#51E591
RGB	rgb(81, 229, 145)
HSL	hsl(146, 74%, 61%)
HSV	hsv(146, 65%, 90%)
CMYK	cmyk(64.6%, 0%, 36.7%, 10.2%)
CIE-LAB	lab(81.74, -57.82, 29.71)
CIE-LCH	lch(81.74, 65.00, 152.80°)
OKLab	oklab(82.28% -0.1565 0.0744)
OKLCH	oklch(82.28% 0.173 154.6)
XYZ	xyz(36.5203, 59.8284, 36.4060)
Luminance	0.5983 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E591 #E551A5

analogous

#5BE551 #51E591 #51E5DB

triadic

#51E591 #9151E5 #E59151

tetradic

#51E591 #515BE5 #E551A5 #E5DB51

square

#51E591 #515BE5 #E551A5 #E5DB51

split-complementary

#51E591 #DB51E5 #E5515B

monochromatic

#18A354 #20D870 #51E591 #86EDB3 #BBF5D4

Accessibility & contrast

On white

1.62

#51E591 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.97

#51E591 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E591

12.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E591	#FFFFFF	#000000	##000000
##51E591	1.00	1.62	12.97	12.97
#FFFFFF	1.62	1.00	21.00	21.00
#000000	12.97	21.00	1.00	1.00
##000000	12.97	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E4D38B

Deuteranopia (green-blind)

#D1C696

Tritanopia (blue-blind)

#00E3D0

Achromatopsia (no color)

#CBCBCB

Design tokens & code

CSS

--color: #51e591;
/* rgb */ color: rgb(81, 229, 145);
/* oklch */ color: oklch(82.3% 0.173 154.6);

Tailwind

colors: {
  custom: {
    50: '#91eeb2',
    500: '#51e591',
    950: '#000000',
  },
}

SCSS

$custom: #51e591;
$custom-light: #91eeb2;
$custom-dark: #000000;

JSON

{
  "hex": "#51e591",
  "rgb": {
    "r": 81,
    "g": 229,
    "b": 145
  },
  "hsl": {
    "h": 145.946,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.82276,
    "c": 0.17326,
    "h": 154.6
  },
  "luminance": 0.59832
}

Semantic roles & 50–950 ramp

primary

#51E591

secondary

#A63575

accent

#0F80D6

background

#FCFFFD

surface

#F5FEF7

border

#CFD6D0

text

#0E1611

muted

#7F8581

Preview Lab

Preview with #51E591

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

Preview Lab → · Contrast checker → · Palette generator →