#577B90#577B90

#577B90 is a mid, muted cyan. Relative luminance 0.182; OKLCH L 56.4% C 0.052 H 234.5°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#577B90
RGB	rgb(87, 123, 144)
HSL	hsl(202, 25%, 45%)
HSV	hsv(202, 40%, 56%)
CMYK	cmyk(39.6%, 14.6%, 0%, 43.5%)
CIE-LAB	lab(49.74, -7.04, -15.40)
CIE-LCH	lch(49.74, 16.93, 245.44°)
OKLab	oklab(56.39% -0.0302 -0.0424)
OKLCH	oklch(56.39% 0.052 234.5)
XYZ	xyz(16.0458, 18.2048, 29.0485)
Luminance	0.1821 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577B90 #906C57

analogous

#579088 #577B90 #575F90

triadic

#577B90 #90577B #7B9057

tetradic

#577B90 #885790 #906C57 #5F9057

square

#577B90 #885790 #906C57 #5F9057

split-complementary

#577B90 #90575F #908857

monochromatic

#293A44 #405A6A #577B90 #7799AD #9DB6C4

Accessibility & contrast

On white

4.52

#577B90 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#577B90 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577B90

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577B90	#FFFFFF	#000000	##000000
##577B90	1.00	4.52	4.64	4.64
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#717A91

Deuteranopia (green-blind)

#697490

Tritanopia (blue-blind)

#428182

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #577b90;
/* rgb */ color: rgb(87, 123, 144);
/* oklch */ color: oklch(56.4% 0.052 234.5);

Tailwind

colors: {
  custom: {
    50: '#89a1b0',
    500: '#577b90',
    950: '#000000',
  },
}

SCSS

$custom: #577b90;
$custom-light: #89a1b0;
$custom-dark: #000000;

JSON

{
  "hex": "#577b90",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 144
  },
  "hsl": {
    "h": 202.105,
    "s": 24.675,
    "l": 45.294
  },
  "oklch": {
    "l": 0.56387,
    "c": 0.0521,
    "h": 234.5
  },
  "luminance": 0.18206
}

Semantic roles & 50–950 ramp

primary

#577B90

secondary

#B29D91

accent

#8867C1

background

#F8F9FA

surface

#F0F2F4

border

#CBCCCE

text

#0C0E10

muted

#7D7E7F

Preview Lab

Preview with #577B90

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

Preview Lab → · Contrast checker → · Palette generator →