#577BE0#577BE0

#577BE0 is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.6% C 0.158 H 266.9°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#577BE0
RGB	rgb(87, 123, 224)
HSL	hsl(224, 69%, 61%)
HSV	hsv(224, 61%, 88%)
CMYK	cmyk(61.2%, 45.1%, 0%, 12.2%)
CIE-LAB	lab(53.57, 18.18, -55.40)
CIE-LCH	lch(53.57, 58.31, 288.17°)
OKLab	oklab(60.62% -0.0086 -0.1582)
OKLCH	oklch(60.62% 0.158 266.9)
XYZ	xyz(24.4634, 21.5719, 73.3812)
Luminance	0.2157 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BE0 #E0BC57

analogous

#57BFE0 #577BE0 #7757E0

triadic

#577BE0 #E0577B #7BE057

tetradic

#577BE0 #E057BF #E0BC57 #57E077

square

#577BE0 #E057BF #E0BC57 #57E077

split-complementary

#577BE0 #E07757 #BFE057

monochromatic

#1D3F9F #2754D3 #577BE0 #8BA4EA #BECCF3

Accessibility & contrast

On white

3.95

#577BE0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#577BE0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BE0

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BE0	#FFFFFF	#000000	##000000
##577BE0	1.00	3.95	5.31	5.31
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B87E4

Deuteranopia (green-blind)

#357ADE

Tritanopia (blue-blind)

#0092A3

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577be0;
/* rgb */ color: rgb(87, 123, 224);
/* oklch */ color: oklch(60.6% 0.158 266.9);

Tailwind

colors: {
  custom: {
    50: '#92a0ea',
    500: '#577be0',
    950: '#000000',
  },
}

SCSS

$custom: #577be0;
$custom-light: #92a0ea;
$custom-dark: #000000;

JSON

{
  "hex": "#577be0",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 224
  },
  "hsl": {
    "h": 224.234,
    "s": 68.844,
    "l": 60.98
  },
  "oklch": {
    "l": 0.60616,
    "c": 0.1584,
    "h": 266.9
  },
  "luminance": 0.21574
}

Semantic roles & 50–950 ramp

primary

#577BE0

secondary

#E3D6B0

accent

#9F15D1

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577BE0

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

Preview Lab → · Contrast checker → · Palette generator →