#577F9B#577F9B

#577F9B is a mid, moderate cyan. Relative luminance 0.196; OKLCH L 57.8% C 0.062 H 239.7°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#577F9B
RGB	rgb(87, 127, 155)
HSL	hsl(205, 28%, 47%)
HSV	hsv(205, 44%, 61%)
CMYK	cmyk(43.9%, 18.1%, 0%, 39.2%)
CIE-LAB	lab(51.35, -6.20, -19.39)
CIE-LCH	lch(51.35, 20.35, 252.26°)
OKLab	oklab(57.79% -0.0313 -0.0537)
OKLCH	oklch(57.79% 0.062 239.7)
XYZ	xyz(17.4342, 19.5704, 33.8628)
Luminance	0.1957 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577F9B #9B7357

analogous

#579B95 #577F9B #575D9B

triadic

#577F9B #9B577F #7F9B57

tetradic

#577F9B #95579B #9B7357 #5D9B57

square

#577F9B #95579B #9B7357 #5D9B57

split-complementary

#577F9B #9B575D #9B9557

monochromatic

#2B3F4D #415F74 #577F9B #7B9DB5 #A2BACB

Accessibility & contrast

On white

4.27

#577F9B on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#577F9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577F9B

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577F9B	#FFFFFF	#000000	##000000
##577F9B	1.00	4.27	4.91	4.91
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#737E9C

Deuteranopia (green-blind)

#6A779B

Tritanopia (blue-blind)

#3C8688

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #577f9b;
/* rgb */ color: rgb(87, 127, 155);
/* oklch */ color: oklch(57.8% 0.062 239.7);

Tailwind

colors: {
  custom: {
    50: '#8aa4b8',
    500: '#577f9b',
    950: '#000000',
  },
}

SCSS

$custom: #577f9b;
$custom-light: #8aa4b8;
$custom-dark: #000000;

JSON

{
  "hex": "#577f9b",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 155
  },
  "hsl": {
    "h": 204.706,
    "s": 28.099,
    "l": 47.451
  },
  "oklch": {
    "l": 0.57794,
    "c": 0.06214,
    "h": 239.7
  },
  "luminance": 0.19572
}

Semantic roles & 50–950 ramp

primary

#577F9B

secondary

#B8A496

accent

#8B63C4

background

#F8FAFB

surface

#F0F4F6

border

#CBCED0

text

#0C0F11

muted

#7D7F80

Preview Lab

Preview with #577F9B

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

Preview Lab → · Contrast checker → · Palette generator →