#577BC3#577BC3

#577BC3 is a mid, moderate blue. Relative luminance 0.201; OKLCH L 58.9% C 0.118 H 263.1°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#577BC3
RGB	rgb(87, 123, 195)
HSL	hsl(220, 47%, 55%)
HSV	hsv(220, 55%, 76%)
CMYK	cmyk(55.4%, 36.9%, 0%, 23.5%)
CIE-LAB	lab(51.98, 8.56, -41.49)
CIE-LCH	lch(51.98, 42.36, 281.66°)
OKLab	oklab(58.88% -0.0142 -0.1174)
OKLCH	oklch(58.88% 0.118 263.1)
XYZ	xyz(20.8604, 20.1307, 54.4055)
Luminance	0.2013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BC3 #C39F57

analogous

#57B1C3 #577BC3 #6957C3

triadic

#577BC3 #C3577B #7BC357

tetradic

#577BC3 #C357B1 #C39F57 #57C369

square

#577BC3 #C357B1 #C39F57 #57C369

split-complementary

#577BC3 #C36957 #B1C357

monochromatic

#2A4376 #3A5DA3 #577BC3 #849ED3 #B1C2E3

Accessibility & contrast

On white

4.18

#577BC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#577BC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BC3

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BC3	#FFFFFF	#000000	##000000
##577BC3	1.00	4.18	5.03	5.03
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E81C6

Deuteranopia (green-blind)

#5077C1

Tritanopia (blue-blind)

#148B96

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577bc3;
/* rgb */ color: rgb(87, 123, 195);
/* oklch */ color: oklch(58.9% 0.118 263.1);

Tailwind

colors: {
  custom: {
    50: '#8ea0d5',
    500: '#577bc3',
    950: '#000000',
  },
}

SCSS

$custom: #577bc3;
$custom-light: #8ea0d5;
$custom-dark: #000000;

JSON

{
  "hex": "#577bc3",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 195
  },
  "hsl": {
    "h": 220,
    "s": 47.368,
    "l": 55.294
  },
  "oklch": {
    "l": 0.5888,
    "c": 0.11825,
    "h": 263.1
  },
  "luminance": 0.20132
}

Semantic roles & 50–950 ramp

primary

#577BC3

secondary

#D1C2A4

accent

#AA51D7

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #577BC3

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

Preview Lab → · Contrast checker → · Palette generator →