#577B8B#577B8B

#577B8B is a mid, muted cyan. Relative luminance 0.181; OKLCH L 56.2% C 0.048 H 227.3°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#577B8B
RGB	rgb(87, 123, 139)
HSL	hsl(198, 23%, 44%)
HSV	hsv(198, 37%, 55%)
CMYK	cmyk(37.4%, 11.5%, 0%, 45.5%)
CIE-LAB	lab(49.56, -8.42, -12.74)
CIE-LCH	lch(49.56, 15.27, 236.52°)
OKLab	oklab(56.18% -0.0322 -0.035)
OKLCH	oklch(56.18% 0.048 227.3)
XYZ	xyz(15.6721, 18.0553, 27.0803)
Luminance	0.1806 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577B8B #8B6757

analogous

#578B81 #577B8B #57618B

triadic

#577B8B #8B577B #7B8B57

tetradic

#577B8B #81578B #8B6757 #618B57

square

#577B8B #81578B #8B6757 #618B57

split-complementary

#577B8B #8B5761 #8B8157

monochromatic

#283840 #3F5A65 #577B8B #7699A9 #9CB5C1

Accessibility & contrast

On white

4.55

#577B8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#577B8B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577B8B

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577B8B	#FFFFFF	#000000	##000000
##577B8B	1.00	4.55	4.61	4.61
#FFFFFF	4.55	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)

#73798C

Deuteranopia (green-blind)

#6B738B

Tritanopia (blue-blind)

#448080

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #577b8b;
/* rgb */ color: rgb(87, 123, 139);
/* oklch */ color: oklch(56.2% 0.048 227.3);

Tailwind

colors: {
  custom: {
    50: '#88a1ac',
    500: '#577b8b',
    950: '#000000',
  },
}

SCSS

$custom: #577b8b;
$custom-light: #88a1ac;
$custom-dark: #000000;

JSON

{
  "hex": "#577b8b",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 139
  },
  "hsl": {
    "h": 198.462,
    "s": 23.009,
    "l": 44.314
  },
  "oklch": {
    "l": 0.56185,
    "c": 0.04756,
    "h": 227.3
  },
  "luminance": 0.18056
}

Semantic roles & 50–950 ramp

primary

#577B8B

secondary

#AE998F

accent

#8368BF

background

#F8F9FA

surface

#F0F2F4

border

#CBCCCE

text

#0B0E10

muted

#7C7E7F

Preview Lab

Preview with #577B8B

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

Preview Lab → · Contrast checker → · Palette generator →