#5B901B#5B901B

#5B901B is a mid, vivid yellow-green. Relative luminance 0.223; OKLCH L 59.4% C 0.153 H 131.8°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#5B901B
RGB	rgb(91, 144, 27)
HSL	hsl(87, 68%, 34%)
HSV	hsv(87, 81%, 56%)
CMYK	cmyk(36.8%, 0%, 81.3%, 43.5%)
CIE-LAB	lab(54.29, -35.90, 51.70)
CIE-LCH	lch(54.29, 62.94, 124.78°)
OKLab	oklab(59.39% -0.1018 0.114)
OKLCH	oklch(59.39% 0.153 131.8)
XYZ	xyz(14.4853, 22.2492, 4.5680)
Luminance	0.2225 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B901B #501B90

analogous

#908A1B #5B901B #21901B

triadic

#5B901B #1B5B90 #901B5B

tetradic

#5B901B #1B908A #501B90 #901B21

square

#5B901B #1B908A #501B90 #901B21

split-complementary

#5B901B #1B2190 #8A1B90

monochromatic

#1A2908 #3A5C11 #5B901B #7CC425 #9ADD49

Accessibility & contrast

On white

3.85

#5B901B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#5B901B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B901B

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B901B	#FFFFFF	#000000	##000000
##5B901B	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#978400

Deuteranopia (green-blind)

#8F8028

Tritanopia (blue-blind)

#5C8A7B

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #5b901b;
/* rgb */ color: rgb(91, 144, 27);
/* oklch */ color: oklch(59.4% 0.153 131.8);

Tailwind

colors: {
  custom: {
    50: '#8eb162',
    500: '#5b901b',
    950: '#000000',
  },
}

SCSS

$custom: #5b901b;
$custom-light: #8eb162;
$custom-dark: #000000;

JSON

{
  "hex": "#5b901b",
  "rgb": {
    "r": 91,
    "g": 144,
    "b": 27
  },
  "hsl": {
    "h": 87.179,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.59392,
    "c": 0.15282,
    "h": 131.8
  },
  "luminance": 0.2225
}

Semantic roles & 50–950 ramp

primary

#5B901B

secondary

#7E48BF

accent

#3DEB8C

background

#F9FAF6

surface

#F1F5EB

border

#CBCFC6

text

#0D1006

muted

#7E7F7A

Preview Lab

Preview with #5B901B

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

Preview Lab → · Contrast checker → · Palette generator →