#51A623#51A623

#51A623 is a light, vivid yellow-green. Relative luminance 0.291; OKLCH L 64.7% C 0.181 H 137.3°. Best body text is #000000 at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#51A623
RGB	rgb(81, 166, 35)
HSL	hsl(99, 65%, 39%)
HSV	hsv(99, 79%, 65%)
CMYK	cmyk(51.2%, 0%, 78.9%, 34.9%)
CIE-LAB	lab(60.91, -47.96, 55.24)
CIE-LCH	lch(60.91, 73.15, 130.96°)
OKLab	oklab(64.71% -0.1331 0.1228)
OKLCH	oklch(64.71% 0.181 137.3)
XYZ	xyz(17.3324, 29.1419, 6.3014)
Luminance	0.2914 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51A623 #7823A6

analogous

#93A623 #51A623 #23A636

triadic

#51A623 #2351A6 #A62351

tetradic

#51A623 #2393A6 #7823A6 #A63623

square

#51A623 #2393A6 #7823A6 #A63623

split-complementary

#51A623 #3623A6 #A62393

monochromatic

#20410E #387318 #51A623 #6BD432 #90DF65

Accessibility & contrast

On white

3.08

#51A623 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.83

#51A623 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #51A623

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51A623	#FFFFFF	#000000	##000000
##51A623	1.00	3.08	6.83	6.83
#FFFFFF	3.08	1.00	21.00	21.00
#000000	6.83	21.00	1.00	1.00
##000000	6.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AC9700

Deuteranopia (green-blind)

#A19032

Tritanopia (blue-blind)

#4BA08E

Achromatopsia (no color)

#939393

Design tokens & code

CSS

--color: #51a623;
/* rgb */ color: rgb(81, 166, 35);
/* oklch */ color: oklch(64.7% 0.181 137.3);

Tailwind

colors: {
  custom: {
    50: '#8ac169',
    500: '#51a623',
    950: '#000000',
  },
}

SCSS

$custom: #51a623;
$custom-light: #8ac169;
$custom-dark: #000000;

JSON

{
  "hex": "#51a623",
  "rgb": {
    "r": 81,
    "g": 166,
    "b": 35
  },
  "hsl": {
    "h": 98.931,
    "s": 65.174,
    "l": 39.412
  },
  "oklch": {
    "l": 0.64708,
    "c": 0.18108,
    "h": 137.3
  },
  "luminance": 0.29143
}

Semantic roles & 50–950 ramp

primary

#51A623

secondary

#A161C4

accent

#40E8AD

background

#F9FBF6

surface

#F1F7EB

border

#CBD0C6

text

#0D1207

muted

#7E817A

Preview Lab

Preview with #51A623

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

Preview Lab → · Contrast checker → · Palette generator →