#577CE5#577CE5

#577CE5 is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.1% C 0.164 H 266.9°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#577CE5
RGB	rgb(87, 124, 229)
HSL	hsl(224, 73%, 62%)
HSV	hsv(224, 62%, 90%)
CMYK	cmyk(62%, 45.9%, 0%, 10.2%)
CIE-LAB	lab(54.13, 19.25, -57.31)
CIE-LCH	lch(54.13, 60.46, 288.57°)
OKLab	oklab(61.14% -0.0088 -0.1638)
OKLCH	oklch(61.14% 0.164 266.9)
XYZ	xyz(25.2761, 22.0965, 77.0466)
Luminance	0.2210 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CE5 #E5C057

analogous

#57C3E5 #577CE5 #7957E5

triadic

#577CE5 #E5577C #7CE557

tetradic

#577CE5 #E557C3 #E5C057 #57E579

square

#577CE5 #E557C3 #E5C057 #57E579

split-complementary

#577CE5 #E57957 #C3E557

monochromatic

#1A3FA8 #2253DD #577CE5 #8CA5ED #C1CFF5

Accessibility & contrast

On white

3.87

#577CE5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#577CE5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CE5

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CE5	#FFFFFF	#000000	##000000
##577CE5	1.00	3.87	5.42	5.42
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4988E9

Deuteranopia (green-blind)

#307BE3

Tritanopia (blue-blind)

#0094A5

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577ce5;
/* rgb */ color: rgb(87, 124, 229);
/* oklch */ color: oklch(61.1% 0.164 266.9);

Tailwind

colors: {
  custom: {
    50: '#93a1ee',
    500: '#577ce5',
    950: '#000000',
  },
}

SCSS

$custom: #577ce5;
$custom-light: #93a1ee;
$custom-dark: #000000;

JSON

{
  "hex": "#577ce5",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 229
  },
  "hsl": {
    "h": 224.366,
    "s": 73.196,
    "l": 61.961
  },
  "oklch": {
    "l": 0.61139,
    "c": 0.164,
    "h": 266.9
  },
  "luminance": 0.22099
}

Semantic roles & 50–950 ramp

primary

#577CE5

secondary

#E6D8B2

accent

#A210D5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577CE5

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

Preview Lab → · Contrast checker → · Palette generator →