#577D91#577D91

#577D91 is a mid, muted cyan. Relative luminance 0.187; OKLCH L 56.9% C 0.053 H 231.8°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#577D91
RGB	rgb(87, 125, 145)
HSL	hsl(201, 25%, 45%)
HSV	hsv(201, 40%, 57%)
CMYK	cmyk(40%, 13.8%, 0%, 43.1%)
CIE-LAB	lab(50.38, -7.90, -15.02)
CIE-LCH	lch(50.38, 16.98, 242.25°)
OKLab	oklab(56.9% -0.0325 -0.0414)
OKLCH	oklch(56.9% 0.053 231.8)
XYZ	xyz(16.3732, 18.7368, 29.5364)
Luminance	0.1874 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577D91 #916B57

analogous

#579188 #577D91 #576091

triadic

#577D91 #91577D #7D9157

tetradic

#577D91 #885791 #916B57 #609157

square

#577D91 #885791 #916B57 #609157

split-complementary

#577D91 #915760 #918857

monochromatic

#293B44 #405C6B #577D91 #779BAE #9EB7C5

Accessibility & contrast

On white

4.42

#577D91 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#577D91 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577D91

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577D91	#FFFFFF	#000000	##000000
##577D91	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#737C92

Deuteranopia (green-blind)

#6B7591

Tritanopia (blue-blind)

#418383

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #577d91;
/* rgb */ color: rgb(87, 125, 145);
/* oklch */ color: oklch(56.9% 0.053 231.8);

Tailwind

colors: {
  custom: {
    50: '#89a2b1',
    500: '#577d91',
    950: '#000000',
  },
}

SCSS

$custom: #577d91;
$custom-light: #89a2b1;
$custom-dark: #000000;

JSON

{
  "hex": "#577d91",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 145
  },
  "hsl": {
    "h": 200.69,
    "s": 25,
    "l": 45.49
  },
  "oklch": {
    "l": 0.56902,
    "c": 0.05264,
    "h": 231.8
  },
  "luminance": 0.18738
}

Semantic roles & 50–950 ramp

primary

#577D91

secondary

#B29D92

accent

#8666C1

background

#F8F9FA

surface

#F0F2F5

border

#CBCCCF

text

#0C0F10

muted

#7D7E7F

Preview Lab

Preview with #577D91

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

Preview Lab → · Contrast checker → · Palette generator →