#51AB1C#51AB1C

#51AB1C is a light, vivid yellow-green. Relative luminance 0.310; OKLCH L 66.0% C 0.190 H 137.2°. Best body text is #000000 at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#51AB1C
RGB	rgb(81, 171, 28)
HSL	hsl(98, 72%, 39%)
HSV	hsv(98, 84%, 67%)
CMYK	cmyk(52.6%, 0%, 83.6%, 32.9%)
CIE-LAB	lab(62.47, -50.23, 58.70)
CIE-LCH	lch(62.47, 77.26, 130.56°)
OKLab	oklab(65.99% -0.1395 0.1291)
OKLCH	oklch(65.99% 0.19 137.2)
XYZ	xyz(18.1653, 30.9576, 6.1166)
Luminance	0.3096 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51AB1C #761CAB

analogous

#99AB1C #51AB1C #1CAB2F

triadic

#51AB1C #1C51AB #AB1C51

tetradic

#51AB1C #1C99AB #761CAB #AB2F1C

square

#51AB1C #1C99AB #761CAB #AB2F1C

split-complementary

#51AB1C #2F1CAB #AB1C99

monochromatic

#1F420B #387613 #51AB1C #6BDC28 #8FE45D

Accessibility & contrast

On white

2.92

#51AB1C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.19

#51AB1C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51AB1C

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51AB1C	#FFFFFF	#000000	##000000
##51AB1C	1.00	2.92	7.19	7.19
#FFFFFF	2.92	1.00	21.00	21.00
#000000	7.19	21.00	1.00	1.00
##000000	7.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B19C00

Deuteranopia (green-blind)

#A5942E

Tritanopia (blue-blind)

#4BA592

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #51ab1c;
/* rgb */ color: rgb(81, 171, 28);
/* oklch */ color: oklch(66.0% 0.190 137.2);

Tailwind

colors: {
  custom: {
    50: '#8bc567',
    500: '#51ab1c',
    950: '#000000',
  },
}

SCSS

$custom: #51ab1c;
$custom-light: #8bc567;
$custom-dark: #000000;

JSON

{
  "hex": "#51ab1c",
  "rgb": {
    "r": 81,
    "g": 171,
    "b": 28
  },
  "hsl": {
    "h": 97.762,
    "s": 71.859,
    "l": 39.02
  },
  "oklch": {
    "l": 0.65987,
    "c": 0.19008,
    "h": 137.2
  },
  "luminance": 0.30959
}

Semantic roles & 50–950 ramp

primary

#51AB1C

secondary

#A05AC9

accent

#39EFAB

background

#F9FCF6

surface

#F1F8EB

border

#CBD1C6

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51AB1C

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

Preview Lab → · Contrast checker → · Palette generator →