#577BE1#577BE1

#577BE1 is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.7% C 0.160 H 267.0°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#577BE1
RGB	rgb(87, 123, 225)
HSL	hsl(224, 70%, 61%)
HSV	hsv(224, 61%, 88%)
CMYK	cmyk(61.3%, 45.3%, 0%, 11.8%)
CIE-LAB	lab(53.63, 18.52, -55.87)
CIE-LCH	lch(53.63, 58.86, 288.34°)
OKLab	oklab(60.68% -0.0084 -0.1595)
OKLCH	oklch(60.68% 0.16 267)
XYZ	xyz(24.5994, 21.6263, 74.0975)
Luminance	0.2163 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BE1 #E1BD57

analogous

#57C0E1 #577BE1 #7857E1

triadic

#577BE1 #E1577B #7BE157

tetradic

#577BE1 #E157C0 #E1BD57 #57E178

square

#577BE1 #E157C0 #E1BD57 #57E178

split-complementary

#577BE1 #E17857 #C0E157

monochromatic

#1D3FA1 #2654D5 #577BE1 #8BA4EA #BFCDF4

Accessibility & contrast

On white

3.94

#577BE1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#577BE1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BE1

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BE1	#FFFFFF	#000000	##000000
##577BE1	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A87E5

Deuteranopia (green-blind)

#347ADF

Tritanopia (blue-blind)

#0092A3

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577be1;
/* rgb */ color: rgb(87, 123, 225);
/* oklch */ color: oklch(60.7% 0.160 267.0);

Tailwind

colors: {
  custom: {
    50: '#92a0eb',
    500: '#577be1',
    950: '#000000',
  },
}

SCSS

$custom: #577be1;
$custom-light: #92a0eb;
$custom-dark: #000000;

JSON

{
  "hex": "#577be1",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 225
  },
  "hsl": {
    "h": 224.348,
    "s": 69.697,
    "l": 61.176
  },
  "oklch": {
    "l": 0.6068,
    "c": 0.15976,
    "h": 267
  },
  "luminance": 0.21628
}

Semantic roles & 50–950 ramp

primary

#577BE1

secondary

#E4D6B0

accent

#A014D2

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577BE1

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

Preview Lab → · Contrast checker → · Palette generator →