#577A90#577A90

#577A90 is a mid, muted cyan. Relative luminance 0.180; OKLCH L 56.2% C 0.052 H 236.5°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#577A90
RGB	rgb(87, 122, 144)
HSL	hsl(203, 25%, 45%)
HSV	hsv(203, 40%, 56%)
CMYK	cmyk(39.6%, 15.3%, 0%, 43.5%)
CIE-LAB	lab(49.45, -6.46, -15.85)
CIE-LCH	lch(49.45, 17.12, 247.83°)
OKLab	oklab(56.15% -0.0289 -0.0437)
OKLCH	oklch(56.15% 0.052 236.5)
XYZ	xyz(15.9224, 17.9580, 29.0074)
Luminance	0.1796 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577A90 #906D57

analogous

#579089 #577A90 #575D90

triadic

#577A90 #90577A #7A9057

tetradic

#577A90 #895790 #906D57 #5D9057

square

#577A90 #895790 #906D57 #5D9057

split-complementary

#577A90 #90575D #908957

monochromatic

#293944 #405A6A #577A90 #7798AD #9DB5C4

Accessibility & contrast

On white

4.57

#577A90 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#577A90 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577A90

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577A90	#FFFFFF	#000000	##000000
##577A90	1.00	4.57	4.59	4.59
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#707991

Deuteranopia (green-blind)

#687390

Tritanopia (blue-blind)

#428081

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #577a90;
/* rgb */ color: rgb(87, 122, 144);
/* oklch */ color: oklch(56.2% 0.052 236.5);

Tailwind

colors: {
  custom: {
    50: '#89a0b0',
    500: '#577a90',
    950: '#000000',
  },
}

SCSS

$custom: #577a90;
$custom-light: #89a0b0;
$custom-dark: #000000;

JSON

{
  "hex": "#577a90",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 144
  },
  "hsl": {
    "h": 203.158,
    "s": 24.675,
    "l": 45.294
  },
  "oklch": {
    "l": 0.56151,
    "c": 0.05239,
    "h": 236.5
  },
  "luminance": 0.17959
}

Semantic roles & 50–950 ramp

primary

#577A90

secondary

#B29E91

accent

#8A67C1

background

#F8F9FA

surface

#F0F2F4

border

#CBCCCE

text

#0C0E10

muted

#7D7E7F

Preview Lab

Preview with #577A90

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

Preview Lab → · Contrast checker → · Palette generator →