#577B9E#577B9E

#577B9E is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 57.0% C 0.068 H 248.4°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#577B9E
RGB	rgb(87, 123, 158)
HSL	hsl(210, 29%, 48%)
HSV	hsv(210, 45%, 62%)
CMYK	cmyk(44.9%, 22.2%, 0%, 38%)
CIE-LAB	lab(50.29, -3.00, -22.77)
CIE-LCH	lch(50.29, 22.96, 262.50°)
OKLab	oklab(57% -0.025 -0.0633)
OKLCH	oklch(57% 0.068 248.4)
XYZ	xyz(17.1829, 18.6597, 35.0374)
Luminance	0.1866 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577B9E #9E7A57

analogous

#579E9D #577B9E #57579E

triadic

#577B9E #9E577B #7B9E57

tetradic

#577B9E #9D579E #9E7A57 #579E57

square

#577B9E #9D579E #9E7A57 #579E57

split-complementary

#577B9E #9E5757 #9E9D57

monochromatic

#2C3E4F #415C77 #577B9E #7C9AB7 #A3B8CC

Accessibility & contrast

On white

4.44

#577B9E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#577B9E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577B9E

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577B9E	#FFFFFF	#000000	##000000
##577B9E	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)

#6D7CA0

Deuteranopia (green-blind)

#64749D

Tritanopia (blue-blind)

#3B8387

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #577b9e;
/* rgb */ color: rgb(87, 123, 158);
/* oklch */ color: oklch(57.0% 0.068 248.4);

Tailwind

colors: {
  custom: {
    50: '#8aa1ba',
    500: '#577b9e',
    950: '#000000',
  },
}

SCSS

$custom: #577b9e;
$custom-light: #8aa1ba;
$custom-dark: #000000;

JSON

{
  "hex": "#577b9e",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 158
  },
  "hsl": {
    "h": 209.577,
    "s": 28.98,
    "l": 48.039
  },
  "oklch": {
    "l": 0.56996,
    "c": 0.06804,
    "h": 248.4
  },
  "luminance": 0.18661
}

Semantic roles & 50–950 ramp

primary

#577B9E

secondary

#BAA897

accent

#9363C5

background

#F8F9FB

surface

#F0F2F6

border

#CBCCD0

text

#0C0E11

muted

#7D7E80

Preview Lab

Preview with #577B9E

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

Preview Lab → · Contrast checker → · Palette generator →