#577B9C#577B9C

#577B9C is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 56.9% C 0.066 H 246.9°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#577B9C
RGB	rgb(87, 123, 156)
HSL	hsl(209, 28%, 48%)
HSV	hsv(209, 44%, 61%)
CMYK	cmyk(44.2%, 21.2%, 0%, 38.8%)
CIE-LAB	lab(50.21, -3.59, -21.72)
CIE-LCH	lch(50.21, 22.02, 260.62°)
OKLab	oklab(56.9% -0.0257 -0.0603)
OKLCH	oklch(56.9% 0.066 246.9)
XYZ	xyz(17.0122, 18.5914, 34.1381)
Luminance	0.1859 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577B9C #9C7857

analogous

#579C9B #577B9C #57589C

triadic

#577B9C #9C577B #7B9C57

tetradic

#577B9C #9B579C #9C7857 #589C57

square

#577B9C #9B579C #9C7857 #589C57

split-complementary

#577B9C #9C5758 #9C9B57

monochromatic

#2B3D4D #415C75 #577B9C #7B99B5 #A2B8CB

Accessibility & contrast

On white

4.45

#577B9C on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#577B9C on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577B9C

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577B9C	#FFFFFF	#000000	##000000
##577B9C	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E7B9E

Deuteranopia (green-blind)

#65749B

Tritanopia (blue-blind)

#3C8386

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #577b9c;
/* rgb */ color: rgb(87, 123, 156);
/* oklch */ color: oklch(56.9% 0.066 246.9);

Tailwind

colors: {
  custom: {
    50: '#8aa1b9',
    500: '#577b9c',
    950: '#000000',
  },
}

SCSS

$custom: #577b9c;
$custom-light: #8aa1b9;
$custom-dark: #000000;

JSON

{
  "hex": "#577b9c",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 156
  },
  "hsl": {
    "h": 208.696,
    "s": 28.395,
    "l": 47.647
  },
  "oklch": {
    "l": 0.56905,
    "c": 0.06557,
    "h": 246.9
  },
  "luminance": 0.18592
}

Semantic roles & 50–950 ramp

primary

#577B9C

secondary

#B9A796

accent

#9263C5

background

#F8F9FB

surface

#F0F2F6

border

#CBCCD0

text

#0C0E11

muted

#7D7E80

Preview Lab

Preview with #577B9C

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

Preview Lab → · Contrast checker → · Palette generator →