#577B99#577B99

#577B99 is a mid, moderate cyan. Relative luminance 0.185; OKLCH L 56.8% C 0.062 H 244.3°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#577B99
RGB	rgb(87, 123, 153)
HSL	hsl(207, 28%, 47%)
HSV	hsv(207, 43%, 60%)
CMYK	cmyk(43.1%, 19.6%, 0%, 40%)
CIE-LAB	lab(50.09, -4.47, -20.15)
CIE-LCH	lch(50.09, 20.64, 257.50°)
OKLab	oklab(56.77% -0.0268 -0.0558)
OKLCH	oklch(56.77% 0.062 244.3)
XYZ	xyz(16.7613, 18.4910, 32.8167)
Luminance	0.1849 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577B99 #997557

analogous

#579996 #577B99 #575A99

triadic

#577B99 #99577B #7B9957

tetradic

#577B99 #965799 #997557 #5A9957

square

#577B99 #965799 #997557 #5A9957

split-complementary

#577B99 #99575A #999657

monochromatic

#2B3C4B #415C72 #577B99 #7A99B3 #A1B7C9

Accessibility & contrast

On white

4.47

#577B99 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#577B99 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577B99

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577B99	#FFFFFF	#000000	##000000
##577B99	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7B9A

Deuteranopia (green-blind)

#667498

Tritanopia (blue-blind)

#3E8285

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #577b99;
/* rgb */ color: rgb(87, 123, 153);
/* oklch */ color: oklch(56.8% 0.062 244.3);

Tailwind

colors: {
  custom: {
    50: '#89a1b7',
    500: '#577b99',
    950: '#000000',
  },
}

SCSS

$custom: #577b99;
$custom-light: #89a1b7;
$custom-dark: #000000;

JSON

{
  "hex": "#577b99",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 153
  },
  "hsl": {
    "h": 207.273,
    "s": 27.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.56772,
    "c": 0.06195,
    "h": 244.3
  },
  "luminance": 0.18492
}

Semantic roles & 50–950 ramp

primary

#577B99

secondary

#B7A495

accent

#9064C4

background

#F8F9FB

surface

#F0F2F6

border

#CBCCD0

text

#0C0E11

muted

#7D7E80

Preview Lab

Preview with #577B99

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

Preview Lab → · Contrast checker → · Palette generator →