#538B21#538B21

#538B21 is a mid, vivid yellow-green. Relative luminance 0.204; OKLCH L 57.7% C 0.147 H 133.7°. Best body text is #000000 at 5.08:1 contrast (WCAG AA passes).

Color values

HEX	#538B21
RGB	rgb(83, 139, 33)
HSL	hsl(92, 62%, 34%)
HSV	hsv(92, 76%, 55%)
CMYK	cmyk(40.3%, 0%, 76.3%, 45.5%)
CIE-LAB	lab(52.30, -36.30, 47.65)
CIE-LCH	lch(52.30, 59.90, 127.30°)
OKLab	oklab(57.66% -0.1019 0.1066)
OKLCH	oklch(57.66% 0.148 133.7)
XYZ	xyz(13.0742, 20.4134, 4.6898)
Luminance	0.2041 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#538B21 #59218B

analogous

#888B21 #538B21 #218B24

triadic

#538B21 #21538B #8B2153

tetradic

#538B21 #21888B #59218B #8B2421

square

#538B21 #21888B #59218B #8B2421

split-complementary

#538B21 #24218B #8B2188

monochromatic

#18280A #355A15 #538B21 #71BC2D #8FD651

Accessibility & contrast

On white

4.13

#538B21 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.08

#538B21 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #538B21

5.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##538B21	#FFFFFF	#000000	##000000
##538B21	1.00	4.13	5.08	5.08
#FFFFFF	4.13	1.00	21.00	21.00
#000000	5.08	21.00	1.00	1.00
##000000	5.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#91800B

Deuteranopia (green-blind)

#897B2C

Tritanopia (blue-blind)

#538577

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #538b21;
/* rgb */ color: rgb(83, 139, 33);
/* oklch */ color: oklch(57.7% 0.147 133.7);

Tailwind

colors: {
  custom: {
    50: '#88ad64',
    500: '#538b21',
    950: '#000000',
  },
}

SCSS

$custom: #538b21;
$custom-light: #88ad64;
$custom-dark: #000000;

JSON

{
  "hex": "#538b21",
  "rgb": {
    "r": 83,
    "g": 139,
    "b": 33
  },
  "hsl": {
    "h": 91.698,
    "s": 61.628,
    "l": 33.725
  },
  "oklch": {
    "l": 0.57664,
    "c": 0.1475,
    "h": 133.7
  },
  "luminance": 0.20414
}

Semantic roles & 50–950 ramp

primary

#538B21

secondary

#874FB9

accent

#43E598

background

#F8FAF6

surface

#F0F4EB

border

#CBCEC6

text

#0C1006

muted

#7D7F7A

Preview Lab

Preview with #538B21

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

Preview Lab → · Contrast checker → · Palette generator →