#577FE4#577FE4

#577FE4 is a mid, vivid blue. Relative luminance 0.228; OKLCH L 61.7% C 0.159 H 265.7°. Best body text is #000000 at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#577FE4
RGB	rgb(87, 127, 228)
HSL	hsl(223, 72%, 62%)
HSV	hsv(223, 62%, 89%)
CMYK	cmyk(61.8%, 44.3%, 0%, 10.6%)
CIE-LAB	lab(54.87, 17.08, -55.56)
CIE-LCH	lch(54.87, 58.13, 287.09°)
OKLab	oklab(61.69% -0.0119 -0.1586)
OKLCH	oklch(61.69% 0.159 265.7)
XYZ	xyz(25.5186, 22.8042, 76.4406)
Luminance	0.2281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FE4 #E4BC57

analogous

#57C5E4 #577FE4 #7657E4

triadic

#577FE4 #E4577F #7FE457

tetradic

#577FE4 #E457C5 #E4BC57 #57E476

square

#577FE4 #E457C5 #E4BC57 #57E476

split-complementary

#577FE4 #E47657 #C5E457

monochromatic

#1B42A6 #2357DB #577FE4 #8CA7EC #C0CFF5

Accessibility & contrast

On white

3.78

#577FE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.56

#577FE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FE4

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FE4	#FFFFFF	#000000	##000000
##577FE4	1.00	3.78	5.56	5.56
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.56	21.00	1.00	1.00
##000000	5.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F8AE8

Deuteranopia (green-blind)

#397DE2

Tritanopia (blue-blind)

#0096A6

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #577fe4;
/* rgb */ color: rgb(87, 127, 228);
/* oklch */ color: oklch(61.7% 0.159 265.7);

Tailwind

colors: {
  custom: {
    50: '#93a3ed',
    500: '#577fe4',
    950: '#000000',
  },
}

SCSS

$custom: #577fe4;
$custom-light: #93a3ed;
$custom-dark: #000000;

JSON

{
  "hex": "#577fe4",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 228
  },
  "hsl": {
    "h": 222.979,
    "s": 72.308,
    "l": 61.765
  },
  "oklch": {
    "l": 0.61688,
    "c": 0.15904,
    "h": 265.7
  },
  "luminance": 0.22806
}

Semantic roles & 50–950 ramp

primary

#577FE4

secondary

#E6D7B1

accent

#9D11D4

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #577FE4

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

Preview Lab → · Contrast checker → · Palette generator →