#577FE5#577FE5

#577FE5 is a mid, vivid blue. Relative luminance 0.229; OKLCH L 61.8% C 0.160 H 265.8°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#577FE5
RGB	rgb(87, 127, 229)
HSL	hsl(223, 73%, 62%)
HSV	hsv(223, 62%, 90%)
CMYK	cmyk(62%, 44.5%, 0%, 10.2%)
CIE-LAB	lab(54.93, 17.42, -56.03)
CIE-LCH	lch(54.93, 58.68, 287.27°)
OKLab	oklab(61.75% -0.0118 -0.16)
OKLCH	oklch(61.75% 0.16 265.8)
XYZ	xyz(25.6578, 22.8598, 77.1738)
Luminance	0.2286 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FE5 #E5BD57

analogous

#57C6E5 #577FE5 #7657E5

triadic

#577FE5 #E5577F #7FE557

tetradic

#577FE5 #E557C6 #E5BD57 #57E576

square

#577FE5 #E557C6 #E5BD57 #57E576

split-complementary

#577FE5 #E57657 #C6E557

monochromatic

#1A42A8 #2257DD #577FE5 #8CA7ED #C1D0F5

Accessibility & contrast

On white

3.77

#577FE5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#577FE5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FE5

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FE5	#FFFFFF	#000000	##000000
##577FE5	1.00	3.77	5.57	5.57
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.57	21.00	1.00	1.00
##000000	5.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F8AE9

Deuteranopia (green-blind)

#387DE3

Tritanopia (blue-blind)

#0096A7

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #577fe5;
/* rgb */ color: rgb(87, 127, 229);
/* oklch */ color: oklch(61.8% 0.160 265.8);

Tailwind

colors: {
  custom: {
    50: '#93a3ee',
    500: '#577fe5',
    950: '#000000',
  },
}

SCSS

$custom: #577fe5;
$custom-light: #93a3ee;
$custom-dark: #000000;

JSON

{
  "hex": "#577fe5",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 229
  },
  "hsl": {
    "h": 223.099,
    "s": 73.196,
    "l": 61.961
  },
  "oklch": {
    "l": 0.6175,
    "c": 0.16039,
    "h": 265.8
  },
  "luminance": 0.22862
}

Semantic roles & 50–950 ramp

primary

#577FE5

secondary

#E6D7B2

accent

#9E10D5

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #577FE5

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

Preview Lab → · Contrast checker → · Palette generator →