#51A11B#51A11B

#51A11B is a light, vivid yellow-green. Relative luminance 0.273; OKLCH L 63.3% C 0.179 H 136.4°. Best body text is #000000 at 6.46:1 contrast (WCAG AA passes).

Color values

HEX	#51A11B
RGB	rgb(81, 161, 27)
HSL	hsl(96, 71%, 37%)
HSV	hsv(96, 83%, 63%)
CMYK	cmyk(49.7%, 0%, 83.2%, 36.9%)
CIE-LAB	lab(59.27, -46.43, 56.07)
CIE-LCH	lch(59.27, 72.80, 129.63°)
OKLab	oklab(63.35% -0.1294 0.1234)
OKLCH	oklch(63.35% 0.179 136.4)
XYZ	xyz(16.3356, 27.3171, 5.4486)
Luminance	0.2732 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A11B #6B1BA1

analogous

#94A11B #51A11B #1BA128

triadic

#51A11B #1B51A1 #A11B51

tetradic

#51A11B #1B94A1 #6B1BA1 #A1281B

square

#51A11B #1B94A1 #6B1BA1 #A1281B

split-complementary

#51A11B #281BA1 #A11B94

monochromatic

#1C3809 #376D12 #51A11B #6BD524 #8DE254

Accessibility & contrast

On white

3.25

#51A11B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.46

#51A11B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A11B

6.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A11B	#FFFFFF	#000000	##000000
##51A11B	1.00	3.25	6.46	6.46
#FFFFFF	3.25	1.00	21.00	21.00
#000000	6.46	21.00	1.00	1.00
##000000	6.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A79300

Deuteranopia (green-blind)

#9C8C2C

Tritanopia (blue-blind)

#4D9B89

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #51a11b;
/* rgb */ color: rgb(81, 161, 27);
/* oklch */ color: oklch(63.3% 0.179 136.4);

Tailwind

colors: {
  custom: {
    50: '#8abd65',
    500: '#51a11b',
    950: '#000000',
  },
}

SCSS

$custom: #51a11b;
$custom-light: #8abd65;
$custom-dark: #000000;

JSON

{
  "hex": "#51a11b",
  "rgb": {
    "r": 81,
    "g": 161,
    "b": 27
  },
  "hsl": {
    "h": 95.821,
    "s": 71.277,
    "l": 36.863
  },
  "oklch": {
    "l": 0.63346,
    "c": 0.17881,
    "h": 136.4
  },
  "luminance": 0.27318
}

Semantic roles & 50–950 ramp

primary

#51A11B

secondary

#9752C5

accent

#3AEEA5

background

#F8FBF6

surface

#F0F7EB

border

#CBD0C6

text

#0D1206

muted

#7D817A

Preview Lab

Preview with #51A11B

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

Preview Lab → · Contrast checker → · Palette generator →