#577C9B#577C9B

#577C9B is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.1% C 0.064 H 244.5°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#577C9B
RGB	rgb(87, 124, 155)
HSL	hsl(207, 28%, 47%)
HSV	hsv(207, 44%, 61%)
CMYK	cmyk(43.9%, 20%, 0%, 39.2%)
CIE-LAB	lab(50.46, -4.47, -20.75)
CIE-LCH	lch(50.46, 21.22, 257.85°)
OKLab	oklab(57.09% -0.0274 -0.0575)
OKLCH	oklch(57.09% 0.064 244.5)
XYZ	xyz(17.0525, 18.8070, 33.7355)
Luminance	0.1881 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577C9B #9B7657

analogous

#579B98 #577C9B #575A9B

triadic

#577C9B #9B577C #7C9B57

tetradic

#577C9B #98579B #9B7657 #5A9B57

square

#577C9B #98579B #9B7657 #5A9B57

split-complementary

#577C9B #9B575A #9B9857

monochromatic

#2B3D4D #415D74 #577C9B #7B9AB5 #A2B8CB

Accessibility & contrast

On white

4.41

#577C9B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#577C9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577C9B

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577C9B	#FFFFFF	#000000	##000000
##577C9B	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7C9C

Deuteranopia (green-blind)

#66759A

Tritanopia (blue-blind)

#3C8386

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #577c9b;
/* rgb */ color: rgb(87, 124, 155);
/* oklch */ color: oklch(57.1% 0.064 244.5);

Tailwind

colors: {
  custom: {
    50: '#89a1b8',
    500: '#577c9b',
    950: '#000000',
  },
}

SCSS

$custom: #577c9b;
$custom-light: #89a1b8;
$custom-dark: #000000;

JSON

{
  "hex": "#577c9b",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 155
  },
  "hsl": {
    "h": 207.353,
    "s": 28.099,
    "l": 47.451
  },
  "oklch": {
    "l": 0.57093,
    "c": 0.06373,
    "h": 244.5
  },
  "luminance": 0.18808
}

Semantic roles & 50–950 ramp

primary

#577C9B

secondary

#B8A596

accent

#9063C4

background

#F8F9FB

surface

#F0F2F6

border

#CBCCD0

text

#0C0F11

muted

#7D7E80

Preview Lab

Preview with #577C9B

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

Preview Lab → · Contrast checker → · Palette generator →