#51B41C#51B41C

#51B41C is a light, highly saturated yellow-green. Relative luminance 0.345; OKLCH L 68.4% C 0.200 H 137.8°. Best body text is #000000 at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#51B41C
RGB	rgb(81, 180, 28)
HSL	hsl(99, 73%, 41%)
HSV	hsv(99, 84%, 71%)
CMYK	cmyk(55%, 0%, 84.4%, 29.4%)
CIE-LAB	lab(65.34, -53.58, 61.27)
CIE-LCH	lch(65.34, 81.39, 131.17°)
OKLab	oklab(68.35% -0.1485 0.1345)
OKLCH	oklch(68.35% 0.2 137.8)
XYZ	xyz(19.9235, 34.4741, 6.7027)
Luminance	0.3448 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B41C #7F1CB4

analogous

#9DB41C #51B41C #1CB433

triadic

#51B41C #1C51B4 #B41C51

tetradic

#51B41C #1C9DB4 #7F1CB4 #B4331C

square

#51B41C #1C9DB4 #7F1CB4 #B4331C

split-complementary

#51B41C #331CB4 #B41C9D

monochromatic

#214A0C #397F14 #51B41C #6CDF2F #91E764

Accessibility & contrast

On white

2.66

#51B41C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.90

#51B41C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B41C

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B41C	#FFFFFF	#000000	##000000
##51B41C	1.00	2.66	7.90	7.90
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.90	21.00	1.00	1.00
##000000	7.90	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAA400

Deuteranopia (green-blind)

#AD9C30

Tritanopia (blue-blind)

#49AD99

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #51b41c;
/* rgb */ color: rgb(81, 180, 28);
/* oklch */ color: oklch(68.4% 0.200 137.8);

Tailwind

colors: {
  custom: {
    50: '#8dcb68',
    500: '#51b41c',
    950: '#000000',
  },
}

SCSS

$custom: #51b41c;
$custom-light: #8dcb68;
$custom-dark: #000000;

JSON

{
  "hex": "#51b41c",
  "rgb": {
    "r": 81,
    "g": 180,
    "b": 28
  },
  "hsl": {
    "h": 99.079,
    "s": 73.077,
    "l": 40.784
  },
  "oklch": {
    "l": 0.68351,
    "c": 0.20034,
    "h": 137.8
  },
  "luminance": 0.34476
}

Semantic roles & 50–950 ramp

primary

#51B41C

secondary

#A660CC

accent

#38F0B0

background

#F9FCF6

surface

#F1F9EB

border

#CBD2C6

text

#0D1307

muted

#7E827A

Preview Lab

Preview with #51B41C

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

Preview Lab → · Contrast checker → · Palette generator →