#577B66#577B66

#577B66 is a mid, muted green. Relative luminance 0.172; OKLCH L 54.9% C 0.052 H 158.5°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#577B66
RGB	rgb(87, 123, 102)
HSL	hsl(145, 17%, 41%)
HSV	hsv(145, 29%, 48%)
CMYK	cmyk(29.3%, 0%, 17.1%, 51.8%)
CIE-LAB	lab(48.45, -17.50, 7.43)
CIE-LCH	lch(48.45, 19.01, 156.98°)
OKLab	oklab(54.93% -0.0487 0.0192)
OKLCH	oklch(54.93% 0.052 158.5)
XYZ	xyz(13.4109, 17.1509, 15.1716)
Luminance	0.1715 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577B66 #7B576C

analogous

#5A7B57 #577B66 #577B78

triadic

#577B66 #66577B #7B6657

tetradic

#577B66 #575A7B #7B576C #7B7857

square

#577B66 #575A7B #7B576C #7B7857

split-complementary

#577B66 #78577B #7B575A

monochromatic

#24332B #3E5748 #577B66 #739C84 #97B5A4

Accessibility & contrast

On white

4.74

#577B66 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#577B66 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #577B66

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577B66	#FFFFFF	#000000	##FFFFFF
##577B66	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A7665

Deuteranopia (green-blind)

#747167

Tritanopia (blue-blind)

#507B75

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #577b66;
/* rgb */ color: rgb(87, 123, 102);
/* oklch */ color: oklch(54.9% 0.052 158.5);

Tailwind

colors: {
  custom: {
    50: '#87a191',
    500: '#577b66',
    950: '#000000',
  },
}

SCSS

$custom: #577b66;
$custom-light: #87a191;
$custom-dark: #000000;

JSON

{
  "hex": "#577b66",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 102
  },
  "hsl": {
    "h": 145,
    "s": 17.143,
    "l": 41.176
  },
  "oklch": {
    "l": 0.54927,
    "c": 0.05238,
    "h": 158.5
  },
  "luminance": 0.17151
}

Semantic roles & 50–950 ramp

primary

#577B66

secondary

#A38A99

accent

#6E9ABA

background

#F8F9F8

surface

#EFF2F0

border

#CACCCB

text

#0B0F0C

muted

#7C7E7D

Preview Lab

Preview with #577B66

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

Preview Lab → · Contrast checker → · Palette generator →