#51A018#51A018

#51A018 is a light, vivid yellow-green. Relative luminance 0.270; OKLCH L 63.1% C 0.179 H 136.1°. Best body text is #000000 at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#51A018
RGB	rgb(81, 160, 24)
HSL	hsl(95, 74%, 36%)
HSV	hsv(95, 85%, 63%)
CMYK	cmyk(49.4%, 0%, 85%, 37.3%)
CIE-LAB	lab(58.93, -46.17, 56.55)
CIE-LCH	lch(58.93, 73.01, 129.23°)
OKLab	oklab(63.07% -0.1289 0.124)
OKLCH	oklch(63.07% 0.179 136.1)
XYZ	xyz(16.1286, 26.9558, 5.2171)
Luminance	0.2696 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A018 #6718A0

analogous

#95A018 #51A018 #18A023

triadic

#51A018 #1851A0 #A01851

tetradic

#51A018 #1895A0 #6718A0 #A02318

square

#51A018 #1895A0 #6718A0 #A02318

split-complementary

#51A018 #2318A0 #A01895

monochromatic

#1B3608 #366B10 #51A018 #6CD520 #8DE44E

Accessibility & contrast

On white

3.29

#51A018 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.39

#51A018 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A018

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A018	#FFFFFF	#000000	##000000
##51A018	1.00	3.29	6.39	6.39
#FFFFFF	3.29	1.00	21.00	21.00
#000000	6.39	21.00	1.00	1.00
##000000	6.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A69200

Deuteranopia (green-blind)

#9C8B2A

Tritanopia (blue-blind)

#4D9A88

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #51a018;
/* rgb */ color: rgb(81, 160, 24);
/* oklch */ color: oklch(63.1% 0.179 136.1);

Tailwind

colors: {
  custom: {
    50: '#8abd64',
    500: '#51a018',
    950: '#000000',
  },
}

SCSS

$custom: #51a018;
$custom-light: #8abd64;
$custom-dark: #000000;

JSON

{
  "hex": "#51a018",
  "rgb": {
    "r": 81,
    "g": 160,
    "b": 24
  },
  "hsl": {
    "h": 94.853,
    "s": 73.913,
    "l": 36.078
  },
  "oklch": {
    "l": 0.63068,
    "c": 0.17883,
    "h": 136.1
  },
  "luminance": 0.26957
}

Semantic roles & 50–950 ramp

primary

#51A018

secondary

#944DC6

accent

#37F1A3

background

#F8FBF6

surface

#F0F6EB

border

#CBD0C6

text

#0D1206

muted

#7D817A

Preview Lab

Preview with #51A018

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

Preview Lab → · Contrast checker → · Palette generator →