#577AB6#577AB6

#577AB6 is a mid, moderate blue. Relative luminance 0.193; OKLCH L 58.0% C 0.101 H 260.7°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#577AB6
RGB	rgb(87, 122, 182)
HSL	hsl(218, 39%, 53%)
HSV	hsv(218, 52%, 71%)
CMYK	cmyk(52.2%, 33%, 0%, 28.6%)
CIE-LAB	lab(51.06, 4.98, -35.48)
CIE-LCH	lch(51.06, 35.83, 278.00°)
OKLab	oklab(57.95% -0.0163 -0.0999)
OKLCH	oklch(57.95% 0.101 260.7)
XYZ	xyz(19.3307, 19.3213, 46.9576)
Luminance	0.1932 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AB6 #B69357

analogous

#57A9B6 #577AB6 #6457B6

triadic

#577AB6 #B6577A #7AB657

tetradic

#577AB6 #B657A9 #B69357 #57B664

square

#577AB6 #B657A9 #B69357 #57B664

split-complementary

#577AB6 #B66457 #A9B657

monochromatic

#2C4266 #3F5D91 #577AB6 #829CC9 #ACBEDB

Accessibility & contrast

On white

4.32

#577AB6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#577AB6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AB6

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AB6	#FFFFFF	#000000	##000000
##577AB6	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637EB9

Deuteranopia (green-blind)

#5776B5

Tritanopia (blue-blind)

#288790

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #577ab6;
/* rgb */ color: rgb(87, 122, 182);
/* oklch */ color: oklch(58.0% 0.101 260.7);

Tailwind

colors: {
  custom: {
    50: '#8ca0cc',
    500: '#577ab6',
    950: '#000000',
  },
}

SCSS

$custom: #577ab6;
$custom-light: #8ca0cc;
$custom-dark: #000000;

JSON

{
  "hex": "#577ab6",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 182
  },
  "hsl": {
    "h": 217.895,
    "s": 39.419,
    "l": 52.745
  },
  "oklch": {
    "l": 0.57952,
    "c": 0.10124,
    "h": 260.7
  },
  "luminance": 0.19323
}

Semantic roles & 50–950 ramp

primary

#577AB6

secondary

#C9BAA0

accent

#A458CF

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0D0E13

muted

#7D7E82

Preview Lab

Preview with #577AB6

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

Preview Lab → · Contrast checker → · Palette generator →