#51E451#51E451

#51E451 is a light, highly saturated green. Relative luminance 0.578; OKLCH L 81.1% C 0.226 H 143.1°. Best body text is #000000 at 12.57:1 contrast (WCAG AA passes).

Color values

HEX	#51E451
RGB	rgb(81, 228, 81)
HSL	hsl(120, 73%, 61%)
HSV	hsv(120, 64%, 89%)
CMYK	cmyk(64.5%, 0%, 64.5%, 10.6%)
CIE-LAB	lab(80.64, -66.49, 58.46)
CIE-LCH	lch(80.64, 88.54, 138.68°)
OKLab	oklab(81.11% -0.1806 0.1354)
OKLCH	oklch(81.11% 0.226 143.1)
XYZ	xyz(32.6200, 57.8269, 17.2256)
Luminance	0.5783 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E451 #E451E4

analogous

#9AE451 #51E451 #51E49A

triadic

#51E451 #5151E4 #E45151

tetradic

#51E451 #519AE4 #E451E4 #E49A51

square

#51E451 #519AE4 #E451E4 #E49A51

split-complementary

#51E451 #9A51E4 #E4519A

monochromatic

#19A219 #21D721 #51E451 #86EC86 #BBF4BB

Accessibility & contrast

On white

1.67

#51E451 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.57

#51E451 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E451

12.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E451	#FFFFFF	#000000	##000000
##51E451	1.00	1.67	12.57	12.57
#FFFFFF	1.67	1.00	21.00	21.00
#000000	12.57	21.00	1.00	1.00
##000000	12.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E9D03E

Deuteranopia (green-blind)

#D7C35E

Tritanopia (blue-blind)

#30DEC6

Achromatopsia (no color)

#C8C8C8

Design tokens & code

CSS

--color: #51e451;
/* rgb */ color: rgb(81, 228, 81);
/* oklch */ color: oklch(81.1% 0.226 143.1);

Tailwind

colors: {
  custom: {
    50: '#93ee88',
    500: '#51e451',
    950: '#000000',
  },
}

SCSS

$custom: #51e451;
$custom-light: #93ee88;
$custom-dark: #000000;

JSON

{
  "hex": "#51e451",
  "rgb": {
    "r": 81,
    "g": 228,
    "b": 81
  },
  "hsl": {
    "h": 120,
    "s": 73.134,
    "l": 60.588
  },
  "oklch": {
    "l": 0.81107,
    "c": 0.22569,
    "h": 143.1
  },
  "luminance": 0.5783
}

Semantic roles & 50–950 ramp

primary

#51E451

secondary

#A435A4

accent

#10D5D5

background

#FCFFFC

surface

#F5FEF4

border

#CFD6CE

text

#0E160C

muted

#7F857F

Preview Lab

Preview with #51E451

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

Preview Lab → · Contrast checker → · Palette generator →