#51E55B#51E55B

#51E55B is a light, highly saturated green. Relative luminance 0.585; OKLCH L 81.5% C 0.220 H 144.2°. Best body text is #000000 at 12.71:1 contrast (WCAG AA passes).

Color values

HEX	#51E55B
RGB	rgb(81, 229, 91)
HSL	hsl(124, 74%, 61%)
HSV	hsv(124, 65%, 90%)
CMYK	cmyk(64.6%, 0%, 60.3%, 10.2%)
CIE-LAB	lab(81.04, -65.79, 54.69)
CIE-LCH	lch(81.04, 85.55, 140.26°)
OKLab	oklab(81.46% -0.1782 0.1283)
OKLCH	oklch(81.46% 0.22 144.2)
XYZ	xyz(33.2989, 58.5399, 19.4400)
Luminance	0.5854 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E55B #E551DB

analogous

#91E551 #51E55B #51E5A5

triadic

#51E55B #5B51E5 #E55B51

tetradic

#51E55B #5191E5 #E551DB #E5A551

square

#51E55B #5191E5 #E551DB #E5A551

split-complementary

#51E55B #A551E5 #E55191

monochromatic

#18A322 #20D82D #51E55B #86ED8D #BBF5BF

Accessibility & contrast

On white

1.65

#51E55B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.71

#51E55B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E55B

12.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E55B	#FFFFFF	#000000	##000000
##51E55B	1.00	1.65	12.71	12.71
#FFFFFF	1.65	1.00	21.00	21.00
#000000	12.71	21.00	1.00	1.00
##000000	12.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E9D14C

Deuteranopia (green-blind)

#D7C466

Tritanopia (blue-blind)

#2BDFC7

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #51e55b;
/* rgb */ color: rgb(81, 229, 91);
/* oklch */ color: oklch(81.5% 0.220 144.2);

Tailwind

colors: {
  custom: {
    50: '#92ee8e',
    500: '#51e55b',
    950: '#000000',
  },
}

SCSS

$custom: #51e55b;
$custom-light: #92ee8e;
$custom-dark: #000000;

JSON

{
  "hex": "#51e55b",
  "rgb": {
    "r": 81,
    "g": 229,
    "b": 91
  },
  "hsl": {
    "h": 124.054,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.81463,
    "c": 0.2196,
    "h": 144.2
  },
  "luminance": 0.58543
}

Semantic roles & 50–950 ramp

primary

#51E55B

secondary

#A6359E

accent

#0FC9D6

background

#FCFFFC

surface

#F5FEF4

border

#CFD6CE

text

#0E170D

muted

#7F857F

Preview Lab

Preview with #51E55B

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

Preview Lab → · Contrast checker → · Palette generator →