#577A9B#577A9B

#577A9B is a mid, moderate cyan. Relative luminance 0.183; OKLCH L 56.6% C 0.065 H 247.6°. Best body text is #000000 at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#577A9B
RGB	rgb(87, 122, 155)
HSL	hsl(209, 28%, 47%)
HSV	hsv(209, 44%, 61%)
CMYK	cmyk(43.9%, 21.3%, 0%, 39.2%)
CIE-LAB	lab(49.87, -3.30, -21.65)
CIE-LCH	lch(49.87, 21.90, 261.34°)
OKLab	oklab(56.63% -0.0248 -0.0601)
OKLCH	oklch(56.63% 0.065 247.6)
XYZ	xyz(16.8044, 18.3108, 33.6528)
Luminance	0.1831 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577A9B #9B7857

analogous

#579B9A #577A9B #57589B

triadic

#577A9B #9B577A #7A9B57

tetradic

#577A9B #9A579B #9B7857 #589B57

square

#577A9B #9A579B #9B7857 #589B57

split-complementary

#577A9B #9B5758 #9B9A57

monochromatic

#2B3C4D #415B74 #577A9B #7B98B5 #A2B7CB

Accessibility & contrast

On white

4.50

#577A9B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.66

#577A9B on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577A9B

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577A9B	#FFFFFF	#000000	##000000
##577A9B	1.00	4.50	4.66	4.66
#FFFFFF	4.50	1.00	21.00	21.00
#000000	4.66	21.00	1.00	1.00
##000000	4.66	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7B9D

Deuteranopia (green-blind)

#64749A

Tritanopia (blue-blind)

#3D8285

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #577a9b;
/* rgb */ color: rgb(87, 122, 155);
/* oklch */ color: oklch(56.6% 0.065 247.6);

Tailwind

colors: {
  custom: {
    50: '#89a0b8',
    500: '#577a9b',
    950: '#000000',
  },
}

SCSS

$custom: #577a9b;
$custom-light: #89a0b8;
$custom-dark: #000000;

JSON

{
  "hex": "#577a9b",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 155
  },
  "hsl": {
    "h": 209.118,
    "s": 28.099,
    "l": 47.451
  },
  "oklch": {
    "l": 0.56628,
    "c": 0.06502,
    "h": 247.6
  },
  "luminance": 0.18312
}

Semantic roles & 50–950 ramp

primary

#577A9B

secondary

#B8A696

accent

#9263C4

background

#F8F9FB

surface

#F0F2F6

border

#CBCCD0

text

#0C0E11

muted

#7D7E80

Preview Lab

Preview with #577A9B

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

Preview Lab → · Contrast checker → · Palette generator →