#577C99#577C99

#577C99 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 57.0% C 0.061 H 242.7°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#577C99
RGB	rgb(87, 124, 153)
HSL	hsl(206, 28%, 47%)
HSV	hsv(206, 43%, 60%)
CMYK	cmyk(43.1%, 19%, 0%, 40%)
CIE-LAB	lab(50.38, -5.05, -19.70)
CIE-LCH	lch(50.38, 20.33, 255.63°)
OKLab	oklab(57.01% -0.0281 -0.0545)
OKLCH	oklch(57.01% 0.061 242.7)
XYZ	xyz(16.8860, 18.7404, 32.8583)
Luminance	0.1874 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577C99 #997457

analogous

#579995 #577C99 #575B99

triadic

#577C99 #99577C #7C9957

tetradic

#577C99 #955799 #997457 #5B9957

square

#577C99 #955799 #997457 #5B9957

split-complementary

#577C99 #99575B #999557

monochromatic

#2B3D4B #415C72 #577C99 #7A9AB3 #A1B8C9

Accessibility & contrast

On white

4.42

#577C99 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#577C99 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577C99

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577C99	#FFFFFF	#000000	##000000
##577C99	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#707C9A

Deuteranopia (green-blind)

#677598

Tritanopia (blue-blind)

#3D8386

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #577c99;
/* rgb */ color: rgb(87, 124, 153);
/* oklch */ color: oklch(57.0% 0.061 242.7);

Tailwind

colors: {
  custom: {
    50: '#89a1b7',
    500: '#577c99',
    950: '#000000',
  },
}

SCSS

$custom: #577c99;
$custom-light: #89a1b7;
$custom-dark: #000000;

JSON

{
  "hex": "#577c99",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 153
  },
  "hsl": {
    "h": 206.364,
    "s": 27.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.57005,
    "c": 0.06139,
    "h": 242.7
  },
  "luminance": 0.18741
}

Semantic roles & 50–950 ramp

primary

#577C99

secondary

#B7A495

accent

#8E64C4

background

#F8F9FB

surface

#F0F2F6

border

#CBCCD0

text

#0C0F11

muted

#7D7E80

Preview Lab

Preview with #577C99

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

Preview Lab → · Contrast checker → · Palette generator →