#577CE1#577CE1

#577CE1 is a mid, vivid blue. Relative luminance 0.219; OKLCH L 60.9% C 0.159 H 266.6°. Best body text is #000000 at 5.38:1 contrast (WCAG AA passes).

Color values

HEX	#577CE1
RGB	rgb(87, 124, 225)
HSL	hsl(224, 70%, 61%)
HSV	hsv(224, 61%, 88%)
CMYK	cmyk(61.3%, 44.9%, 0%, 11.8%)
CIE-LAB	lab(53.89, 17.91, -55.44)
CIE-LCH	lch(53.89, 58.26, 287.90°)
OKLab	oklab(60.88% -0.0094 -0.1583)
OKLCH	oklch(60.88% 0.159 266.6)
XYZ	xyz(24.7241, 21.8756, 74.1391)
Luminance	0.2188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CE1 #E1BC57

analogous

#57C1E1 #577CE1 #7757E1

triadic

#577CE1 #E1577C #7CE157

tetradic

#577CE1 #E157C1 #E1BC57 #57E177

square

#577CE1 #E157C1 #E1BC57 #57E177

split-complementary

#577CE1 #E17757 #C1E157

monochromatic

#1D40A1 #2655D5 #577CE1 #8BA4EA #BFCDF4

Accessibility & contrast

On white

3.91

#577CE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.38

#577CE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CE1

5.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CE1	#FFFFFF	#000000	##000000
##577CE1	1.00	3.91	5.38	5.38
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.38	21.00	1.00	1.00
##000000	5.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C87E5

Deuteranopia (green-blind)

#367BDF

Tritanopia (blue-blind)

#0093A3

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577ce1;
/* rgb */ color: rgb(87, 124, 225);
/* oklch */ color: oklch(60.9% 0.159 266.6);

Tailwind

colors: {
  custom: {
    50: '#92a1eb',
    500: '#577ce1',
    950: '#000000',
  },
}

SCSS

$custom: #577ce1;
$custom-light: #92a1eb;
$custom-dark: #000000;

JSON

{
  "hex": "#577ce1",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 225
  },
  "hsl": {
    "h": 223.913,
    "s": 69.697,
    "l": 61.176
  },
  "oklch": {
    "l": 0.60884,
    "c": 0.15855,
    "h": 266.6
  },
  "luminance": 0.21878
}

Semantic roles & 50–950 ramp

primary

#577CE1

secondary

#E4D6B0

accent

#9F14D2

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577CE1

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

Preview Lab → · Contrast checker → · Palette generator →