#577B8A#577B8A

#577B8A is a mid, muted cyan. Relative luminance 0.180; OKLCH L 56.1% C 0.047 H 225.7°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#577B8A
RGB	rgb(87, 123, 138)
HSL	hsl(198, 23%, 44%)
HSV	hsv(198, 37%, 54%)
CMYK	cmyk(37%, 10.9%, 0%, 45.9%)
CIE-LAB	lab(49.53, -8.69, -12.20)
CIE-LCH	lch(49.53, 14.98, 234.53°)
OKLab	oklab(56.15% -0.0326 -0.0335)
OKLCH	oklch(56.15% 0.047 225.7)
XYZ	xyz(15.5994, 18.0262, 26.6973)
Luminance	0.1803 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577B8A #8A6657

analogous

#578A80 #577B8A #57628A

triadic

#577B8A #8A577B #7B8A57

tetradic

#577B8A #80578A #8A6657 #628A57

square

#577B8A #80578A #8A6657 #628A57

split-complementary

#577B8A #8A5762 #8A8057

monochromatic

#28383F #3F5A64 #577B8A #769AA8 #9BB5C0

Accessibility & contrast

On white

4.56

#577B8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#577B8A on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577B8A

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577B8A	#FFFFFF	#000000	##000000
##577B8A	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#73798B

Deuteranopia (green-blind)

#6B738A

Tritanopia (blue-blind)

#458080

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #577b8a;
/* rgb */ color: rgb(87, 123, 138);
/* oklch */ color: oklch(56.1% 0.047 225.7);

Tailwind

colors: {
  custom: {
    50: '#88a1ac',
    500: '#577b8a',
    950: '#000000',
  },
}

SCSS

$custom: #577b8a;
$custom-light: #88a1ac;
$custom-dark: #000000;

JSON

{
  "hex": "#577b8a",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 138
  },
  "hsl": {
    "h": 197.647,
    "s": 22.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.56145,
    "c": 0.04676,
    "h": 225.7
  },
  "luminance": 0.18027
}

Semantic roles & 50–950 ramp

primary

#577B8A

secondary

#AE988F

accent

#8269BF

background

#F8F9FA

surface

#F0F2F4

border

#CBCCCE

text

#0B0E10

muted

#7C7E7F

Preview Lab

Preview with #577B8A

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

Preview Lab → · Contrast checker → · Palette generator →