#577B18#577B18

#577B18 is a mid, vivid yellow-green. Relative luminance 0.163; OKLCH L 53.6% C 0.130 H 128.2°. Best body text is #FFFFFF at 4.94:1 contrast (WCAG AA passes).

Color values

HEX	#577B18
RGB	rgb(87, 123, 24)
HSL	hsl(82, 67%, 29%)
HSV	hsv(82, 80%, 48%)
CMYK	cmyk(29.3%, 0%, 80.5%, 51.8%)
CIE-LAB	lab(47.31, -27.92, 46.10)
CIE-LCH	lch(47.31, 53.89, 121.20°)
OKLab	oklab(53.64% -0.0802 0.1018)
OKLCH	oklch(53.64% 0.13 128.2)
XYZ	xyz(11.1783, 16.2578, 3.4131)
Luminance	0.1626 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577B18 #3C187B

analogous

#7B6E18 #577B18 #267B18

triadic

#577B18 #18577B #7B1857

tetradic

#577B18 #187B6E #3C187B #7B1826

square

#577B18 #187B6E #3C187B #7B1826

split-complementary

#577B18 #18267B #6E187B

monochromatic

#121A05 #33480E #577B18 #7BAE22 #9DD836

Accessibility & contrast

On white

4.94

#577B18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.25

#577B18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #577B18

4.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577B18	#FFFFFF	#000000	##FFFFFF
##577B18	1.00	4.94	4.25	4.94
#FFFFFF	4.94	1.00	21.00	1.00
#000000	4.25	21.00	1.00	21.00
##FFFFFF	4.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#817200

Deuteranopia (green-blind)

#7D6F22

Tritanopia (blue-blind)

#5A7569

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #577b18;
/* rgb */ color: rgb(87, 123, 24);
/* oklch */ color: oklch(53.6% 0.130 128.2);

Tailwind

colors: {
  custom: {
    50: '#8aa15e',
    500: '#577b18',
    950: '#000000',
  },
}

SCSS

$custom: #577b18;
$custom-light: #8aa15e;
$custom-dark: #000000;

JSON

{
  "hex": "#577b18",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 24
  },
  "hsl": {
    "h": 81.818,
    "s": 67.347,
    "l": 28.824
  },
  "oklch": {
    "l": 0.53636,
    "c": 0.12958,
    "h": 128.2
  },
  "luminance": 0.16258
}

Semantic roles & 50–950 ramp

primary

#577B18

secondary

#683FB0

accent

#3EEA7C

background

#F8F9F5

surface

#F0F2E9

border

#CBCCC5

text

#0C0F05

muted

#7D7E79

Preview Lab

Preview with #577B18

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

Preview Lab → · Contrast checker → · Palette generator →