#577CE4#577CE4

#577CE4 is a mid, vivid blue. Relative luminance 0.220; OKLCH L 61.1% C 0.163 H 266.8°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#577CE4
RGB	rgb(87, 124, 228)
HSL	hsl(224, 72%, 62%)
HSV	hsv(224, 62%, 89%)
CMYK	cmyk(61.8%, 45.6%, 0%, 10.6%)
CIE-LAB	lab(54.07, 18.92, -56.84)
CIE-LCH	lch(54.07, 59.91, 288.41°)
OKLab	oklab(61.08% -0.0089 -0.1624)
OKLCH	oklch(61.08% 0.163 266.8)
XYZ	xyz(25.1369, 22.0408, 76.3134)
Luminance	0.2204 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CE4 #E4BF57

analogous

#57C3E4 #577CE4 #7957E4

triadic

#577CE4 #E4577C #7CE457

tetradic

#577CE4 #E457C3 #E4BF57 #57E479

square

#577CE4 #E457C3 #E4BF57 #57E479

split-complementary

#577CE4 #E47957 #C3E457

monochromatic

#1B3FA6 #2353DB #577CE4 #8CA5EC #C0CEF5

Accessibility & contrast

On white

3.88

#577CE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#577CE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CE4

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CE4	#FFFFFF	#000000	##000000
##577CE4	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A88E8

Deuteranopia (green-blind)

#327BE2

Tritanopia (blue-blind)

#0094A5

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577ce4;
/* rgb */ color: rgb(87, 124, 228);
/* oklch */ color: oklch(61.1% 0.163 266.8);

Tailwind

colors: {
  custom: {
    50: '#93a1ed',
    500: '#577ce4',
    950: '#000000',
  },
}

SCSS

$custom: #577ce4;
$custom-light: #93a1ed;
$custom-dark: #000000;

JSON

{
  "hex": "#577ce4",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 228
  },
  "hsl": {
    "h": 224.255,
    "s": 72.308,
    "l": 61.765
  },
  "oklch": {
    "l": 0.61075,
    "c": 0.16264,
    "h": 266.8
  },
  "luminance": 0.22043
}

Semantic roles & 50–950 ramp

primary

#577CE4

secondary

#E6D8B1

accent

#A111D4

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577CE4

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

Preview Lab → · Contrast checker → · Palette generator →