#557F18#557F18

#557F18 is a mid, vivid yellow-green. Relative luminance 0.172; OKLCH L 54.6% C 0.136 H 130.0°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#557F18
RGB	rgb(85, 127, 24)
HSL	hsl(84, 68%, 30%)
HSV	hsv(84, 81%, 50%)
CMYK	cmyk(33.1%, 0%, 81.1%, 50.2%)
CIE-LAB	lab(48.48, -30.63, 47.14)
CIE-LCH	lch(48.48, 56.22, 123.01°)
OKLab	oklab(54.56% -0.0874 0.104)
OKLCH	oklch(54.56% 0.136 130)
XYZ	xyz(11.5005, 17.1756, 3.5733)
Luminance	0.1718 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557F18 #42187F

analogous

#7F7618 #557F18 #227F18

triadic

#557F18 #18557F #7F1855

tetradic

#557F18 #187F76 #42187F #7F1822

square

#557F18 #187F76 #42187F #7F1822

split-complementary

#557F18 #18227F #76187F

monochromatic

#111A05 #334C0E #557F18 #77B222 #98D938

Accessibility & contrast

On white

4.73

#557F18 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#557F18 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #557F18

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557F18	#FFFFFF	#000000	##FFFFFF
##557F18	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#857500

Deuteranopia (green-blind)

#7F7223

Tritanopia (blue-blind)

#57796C

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #557f18;
/* rgb */ color: rgb(85, 127, 24);
/* oklch */ color: oklch(54.6% 0.136 130.0);

Tailwind

colors: {
  custom: {
    50: '#89a45f',
    500: '#557f18',
    950: '#000000',
  },
}

SCSS

$custom: #557f18;
$custom-light: #89a45f;
$custom-dark: #000000;

JSON

{
  "hex": "#557f18",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 24
  },
  "hsl": {
    "h": 84.466,
    "s": 68.212,
    "l": 29.608
  },
  "oklch": {
    "l": 0.54556,
    "c": 0.13587,
    "h": 130
  },
  "luminance": 0.17176
}

Semantic roles & 50–950 ramp

primary

#557F18

secondary

#6F3FB3

accent

#3DEB84

background

#F8FAF5

surface

#F0F4EA

border

#CBCEC6

text

#0C0F05

muted

#7D7F79

Preview Lab

Preview with #557F18

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

Preview Lab → · Contrast checker → · Palette generator →