#5BB31B#5BB31B

#5BB31B is a light, vivid yellow-green. Relative luminance 0.345; OKLCH L 68.5% C 0.195 H 136.1°. Best body text is #000000 at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#5BB31B
RGB	rgb(91, 179, 27)
HSL	hsl(95, 74%, 40%)
HSV	hsv(95, 85%, 70%)
CMYK	cmyk(49.2%, 0%, 84.9%, 29.8%)
CIE-LAB	lab(65.39, -50.33, 61.70)
CIE-LCH	lch(65.39, 79.62, 129.20°)
OKLab	oklab(68.5% -0.1405 0.1351)
OKLCH	oklch(68.5% 0.195 136.1)
XYZ	xyz(20.6318, 34.5421, 6.6168)
Luminance	0.3454 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB31B #731BB3

analogous

#A7B31B #5BB31B #1BB327

triadic

#5BB31B #1B5BB3 #B31B5B

tetradic

#5BB31B #1BA7B3 #731BB3 #B3271B

square

#5BB31B #1BA7B3 #731BB3 #B3271B

split-complementary

#5BB31B #271BB3 #B31BA7

monochromatic

#25490B #407E13 #5BB31B #77DF2C #9AE761

Accessibility & contrast

On white

2.66

#5BB31B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.91

#5BB31B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB31B

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB31B	#FFFFFF	#000000	##000000
##5BB31B	1.00	2.66	7.91	7.91
#FFFFFF	2.66	1.00	21.00	21.00
#000000	7.91	21.00	1.00	1.00
##000000	7.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAA300

Deuteranopia (green-blind)

#AE9C2F

Tritanopia (blue-blind)

#57AC98

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #5bb31b;
/* rgb */ color: rgb(91, 179, 27);
/* oklch */ color: oklch(68.5% 0.195 136.1);

Tailwind

colors: {
  custom: {
    50: '#92ca68',
    500: '#5bb31b',
    950: '#000000',
  },
}

SCSS

$custom: #5bb31b;
$custom-light: #92ca68;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb31b",
  "rgb": {
    "r": 91,
    "g": 179,
    "b": 27
  },
  "hsl": {
    "h": 94.737,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.68497,
    "c": 0.1949,
    "h": 136.1
  },
  "luminance": 0.34543
}

Semantic roles & 50–950 ramp

primary

#5BB31B

secondary

#9E5ECC

accent

#37F0A3

background

#F9FCF6

surface

#F2F8EB

border

#CCD1C6

text

#0E1307

muted

#7E827A

Preview Lab

Preview with #5BB31B

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

Preview Lab → · Contrast checker → · Palette generator →