#51A227#51A227

#51A227 is a light, vivid yellow-green. Relative luminance 0.277; OKLCH L 63.7% C 0.174 H 137.3°. Best body text is #000000 at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#51A227
RGB	rgb(81, 162, 39)
HSL	hsl(100, 61%, 39%)
HSV	hsv(100, 76%, 64%)
CMYK	cmyk(50%, 0%, 75.9%, 36.5%)
CIE-LAB	lab(59.65, -46.14, 52.69)
CIE-LCH	lch(59.65, 70.04, 131.21°)
OKLab	oklab(63.68% -0.1279 0.1181)
OKLCH	oklch(63.68% 0.174 137.3)
XYZ	xyz(16.6794, 27.7353, 6.3936)
Luminance	0.2774 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A227 #7827A2

analogous

#8FA227 #51A227 #27A23A

triadic

#51A227 #2751A2 #A22751

tetradic

#51A227 #278FA2 #7827A2 #A23A27

square

#51A227 #278FA2 #7827A2 #A23A27

split-complementary

#51A227 #3A27A2 #A2278F

monochromatic

#203F0F #38711B #51A227 #6BCF37 #90DB69

Accessibility & contrast

On white

3.21

#51A227 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.55

#51A227 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A227

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A227	#FFFFFF	#000000	##000000
##51A227	1.00	3.21	6.55	6.55
#FFFFFF	3.21	1.00	21.00	21.00
#000000	6.55	21.00	1.00	1.00
##000000	6.55	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A7940C

Deuteranopia (green-blind)

#9D8D34

Tritanopia (blue-blind)

#4C9C8B

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #51a227;
/* rgb */ color: rgb(81, 162, 39);
/* oklch */ color: oklch(63.7% 0.174 137.3);

Tailwind

colors: {
  custom: {
    50: '#8abe6a',
    500: '#51a227',
    950: '#000000',
  },
}

SCSS

$custom: #51a227;
$custom-light: #8abe6a;
$custom-dark: #000000;

JSON

{
  "hex": "#51a227",
  "rgb": {
    "r": 81,
    "g": 162,
    "b": 39
  },
  "hsl": {
    "h": 99.512,
    "s": 61.194,
    "l": 39.412
  },
  "oklch": {
    "l": 0.6368,
    "c": 0.17411,
    "h": 137.3
  },
  "luminance": 0.27736
}

Semantic roles & 50–950 ramp

primary

#51A227

secondary

#A164C1

accent

#43E4AD

background

#F8FBF6

surface

#F0F7EC

border

#CBD0C7

text

#0C1207

muted

#7D817A

Preview Lab

Preview with #51A227

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

Preview Lab → · Contrast checker → · Palette generator →