#51B233#51B233

#51B233 is a light, vivid green. Relative luminance 0.338; OKLCH L 68.0% C 0.186 H 139.4°. Best body text is #000000 at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#51B233
RGB	rgb(81, 178, 51)
HSL	hsl(106, 55%, 45%)
HSV	hsv(106, 71%, 70%)
CMYK	cmyk(54.5%, 0%, 71.3%, 30.2%)
CIE-LAB	lab(64.83, -51.43, 53.51)
CIE-LCH	lch(64.83, 74.22, 133.87°)
OKLab	oklab(67.97% -0.1415 0.1215)
OKLCH	oklch(67.97% 0.186 139.4)
XYZ	xyz(19.9105, 33.8275, 8.6115)
Luminance	0.3383 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B233 #9433B2

analogous

#90B233 #51B233 #33B255

triadic

#51B233 #3351B2 #B23351

tetradic

#51B233 #3390B2 #9433B2 #B25533

square

#51B233 #3390B2 #9433B2 #B25533

split-complementary

#51B233 #5533B2 #B23390

monochromatic

#265318 #3B8225 #51B233 #71CE54 #98DC84

Accessibility & contrast

On white

2.70

#51B233 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.77

#51B233 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B233

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B233	#FFFFFF	#000000	##000000
##51B233	1.00	2.70	7.77	7.77
#FFFFFF	2.70	1.00	21.00	21.00
#000000	7.77	21.00	1.00	1.00
##000000	7.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7A21E

Deuteranopia (green-blind)

#AB9A3F

Tritanopia (blue-blind)

#47AC99

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #51b233;
/* rgb */ color: rgb(81, 178, 51);
/* oklch */ color: oklch(68.0% 0.186 139.4);

Tailwind

colors: {
  custom: {
    50: '#8cca72',
    500: '#51b233',
    950: '#000000',
  },
}

SCSS

$custom: #51b233;
$custom-light: #8cca72;
$custom-dark: #000000;

JSON

{
  "hex": "#51b233",
  "rgb": {
    "r": 81,
    "g": 178,
    "b": 51
  },
  "hsl": {
    "h": 105.827,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.67968,
    "c": 0.18646,
    "h": 139.4
  },
  "luminance": 0.33829
}

Semantic roles & 50–950 ramp

primary

#51B233

secondary

#B47CC5

accent

#49DFBB

background

#F9FCF7

surface

#F1F8ED

border

#CBD1C8

text

#0D1308

muted

#7E827B

Preview Lab

Preview with #51B233

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

Preview Lab → · Contrast checker → · Palette generator →