#5BB128#5BB128

#5BB128 is a light, vivid yellow-green. Relative luminance 0.338; OKLCH L 68.0% C 0.187 H 136.7°. Best body text is #000000 at 7.76:1 contrast (WCAG AA passes).

Color values

HEX	#5BB128
RGB	rgb(91, 177, 40)
HSL	hsl(98, 63%, 43%)
HSV	hsv(98, 77%, 69%)
CMYK	cmyk(48.6%, 0%, 77.4%, 30.6%)
CIE-LAB	lab(64.82, -48.90, 57.51)
CIE-LCH	lch(64.82, 75.49, 130.38°)
OKLab	oklab(68.05% -0.136 0.1281)
OKLCH	oklch(68.05% 0.187 136.7)
XYZ	xyz(20.4189, 33.8202, 7.4591)
Luminance	0.3382 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5BB128 #7E28B1

analogous

#A0B128 #5BB128 #28B139

triadic

#5BB128 #285BB1 #B1285B

tetradic

#5BB128 #28A0B1 #7E28B1 #B13928

square

#5BB128 #28A0B1 #7E28B1 #B13928

split-complementary

#5BB128 #3928B1 #B128A0

monochromatic

#284D11 #417F1D #5BB128 #78D442 #9CE074

Accessibility & contrast

On white

2.70

#5BB128 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.76

#5BB128 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #5BB128

7.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5BB128	#FFFFFF	#000000	##000000
##5BB128	1.00	2.70	7.76	7.76
#FFFFFF	2.70	1.00	21.00	21.00
#000000	7.76	21.00	1.00	1.00
##000000	7.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7A203

Deuteranopia (green-blind)

#AC9B37

Tritanopia (blue-blind)

#56AA97

Achromatopsia (no color)

#9D9D9D

Design tokens & code

CSS

--color: #5bb128;
/* rgb */ color: rgb(91, 177, 40);
/* oklch */ color: oklch(68.0% 0.187 136.7);

Tailwind

colors: {
  custom: {
    50: '#91c96d',
    500: '#5bb128',
    950: '#000000',
  },
}

SCSS

$custom: #5bb128;
$custom-light: #91c96d;
$custom-dark: #000000;

JSON

{
  "hex": "#5bb128",
  "rgb": {
    "r": 91,
    "g": 177,
    "b": 40
  },
  "hsl": {
    "h": 97.664,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.68046,
    "c": 0.18684,
    "h": 136.7
  },
  "luminance": 0.33822
}

Semantic roles & 50–950 ramp

primary

#5BB128

secondary

#A66EC7

accent

#42E6A9

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #5BB128

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

Preview Lab → · Contrast checker → · Palette generator →