#51B545#51B545

#51B545 is a light, vivid green. Relative luminance 0.352; OKLCH L 68.9% C 0.177 H 141.6°. Best body text is #000000 at 8.05:1 contrast (WCAG AA passes).

Color values

HEX	#51B545
RGB	rgb(81, 181, 69)
HSL	hsl(114, 45%, 49%)
HSV	hsv(114, 62%, 71%)
CMYK	cmyk(55.2%, 0%, 61.9%, 29%)
CIE-LAB	lab(65.92, -50.89, 47.20)
CIE-LCH	lch(65.92, 69.41, 137.16°)
OKLab	oklab(68.92% -0.1389 0.1102)
OKLCH	oklch(68.92% 0.177 141.6)
XYZ	xyz(20.9904, 35.2250, 11.3221)
Luminance	0.3523 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B545 #A945B5

analogous

#89B545 #51B545 #45B571

triadic

#51B545 #4551B5 #B54551

tetradic

#51B545 #4589B5 #A945B5 #B57145

square

#51B545 #4589B5 #A945B5 #B57145

split-complementary

#51B545 #7145B5 #B54589

monochromatic

#295C23 #3D8934 #51B545 #79C86F #A2D99B

Accessibility & contrast

On white

2.61

#51B545 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.05

#51B545 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B545

8.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B545	#FFFFFF	#000000	##000000
##51B545	1.00	2.61	8.05	8.05
#FFFFFF	2.61	1.00	21.00	21.00
#000000	8.05	21.00	1.00	1.00
##000000	8.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A538

Deuteranopia (green-blind)

#AC9D4E

Tritanopia (blue-blind)

#44B09D

Achromatopsia (no color)

#A0A0A0

Design tokens & code

CSS

--color: #51b545;
/* rgb */ color: rgb(81, 181, 69);
/* oklch */ color: oklch(68.9% 0.177 141.6);

Tailwind

colors: {
  custom: {
    50: '#8bcc7d',
    500: '#51b545',
    950: '#000000',
  },
}

SCSS

$custom: #51b545;
$custom-light: #8bcc7d;
$custom-dark: #000000;

JSON

{
  "hex": "#51b545",
  "rgb": {
    "r": 81,
    "g": 181,
    "b": 69
  },
  "hsl": {
    "h": 113.571,
    "s": 44.8,
    "l": 49.02
  },
  "oklch": {
    "l": 0.68921,
    "c": 0.17734,
    "h": 141.6
  },
  "luminance": 0.35227
}

Semantic roles & 50–950 ramp

primary

#51B545

secondary

#C091C5

accent

#53D5C7

background

#F9FCF7

surface

#F1F9EE

border

#CBD2C9

text

#0D130A

muted

#7E827C

Preview Lab

Preview with #51B545

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

Preview Lab → · Contrast checker → · Palette generator →