#577B9D#577B9D

#577B9D is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 57.0% C 0.067 H 247.7°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#577B9D
RGB	rgb(87, 123, 157)
HSL	hsl(209, 29%, 48%)
HSV	hsv(209, 45%, 62%)
CMYK	cmyk(44.6%, 21.7%, 0%, 38.4%)
CIE-LAB	lab(50.25, -3.29, -22.24)
CIE-LCH	lch(50.25, 22.49, 261.58°)
OKLab	oklab(56.95% -0.0254 -0.0618)
OKLCH	oklch(56.95% 0.067 247.7)
XYZ	xyz(17.0972, 18.6254, 34.5859)
Luminance	0.1863 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577B9D #9D7957

analogous

#579D9C #577B9D #57589D

triadic

#577B9D #9D577B #7B9D57

tetradic

#577B9D #9C579D #9D7957 #589D57

square

#577B9D #9C579D #9D7957 #589D57

split-complementary

#577B9D #9D5758 #9D9C57

monochromatic

#2B3D4E #415C76 #577B9D #7B99B6 #A3B8CC

Accessibility & contrast

On white

4.44

#577B9D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#577B9D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577B9D

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577B9D	#FFFFFF	#000000	##000000
##577B9D	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7C9F

Deuteranopia (green-blind)

#64749C

Tritanopia (blue-blind)

#3B8386

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #577b9d;
/* rgb */ color: rgb(87, 123, 157);
/* oklch */ color: oklch(57.0% 0.067 247.7);

Tailwind

colors: {
  custom: {
    50: '#8aa1ba',
    500: '#577b9d',
    950: '#000000',
  },
}

SCSS

$custom: #577b9d;
$custom-light: #8aa1ba;
$custom-dark: #000000;

JSON

{
  "hex": "#577b9d",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 157
  },
  "hsl": {
    "h": 209.143,
    "s": 28.689,
    "l": 47.843
  },
  "oklch": {
    "l": 0.5695,
    "c": 0.06681,
    "h": 247.7
  },
  "luminance": 0.18626
}

Semantic roles & 50–950 ramp

primary

#577B9D

secondary

#B9A796

accent

#9263C5

background

#F8F9FB

surface

#F0F2F6

border

#CBCCD0

text

#0C0E11

muted

#7D7E80

Preview Lab

Preview with #577B9D

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

Preview Lab → · Contrast checker → · Palette generator →