#577FEC#577FEC

#577FEC is a light, vivid blue. Relative luminance 0.233; OKLCH L 62.2% C 0.170 H 266.4°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#577FEC
RGB	rgb(87, 127, 236)
HSL	hsl(224, 80%, 63%)
HSV	hsv(224, 63%, 93%)
CMYK	cmyk(63.1%, 46.2%, 0%, 7.5%)
CIE-LAB	lab(55.34, 19.79, -59.28)
CIE-LCH	lch(55.34, 62.50, 288.46°)
OKLab	oklab(62.2% -0.0107 -0.1695)
OKLCH	oklch(62.2% 0.17 266.4)
XYZ	xyz(26.6550, 23.2587, 82.4253)
Luminance	0.2326 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FEC #ECC457

analogous

#57C9EC #577FEC #7957EC

triadic

#577FEC #EC577F #7FEC57

tetradic

#577FEC #EC57C9 #ECC457 #57EC79

square

#577FEC #EC57C9 #ECC457 #57EC79

split-complementary

#577FEC #EC7957 #C9EC57

monochromatic

#143FB4 #2055E6 #577FEC #8EA9F2 #C5D3F8

Accessibility & contrast

On white

3.72

#577FEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#577FEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FEC

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FEC	#FFFFFF	#000000	##000000
##577FEC	1.00	3.72	5.65	5.65
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#498CF0

Deuteranopia (green-blind)

#2D7EEA

Tritanopia (blue-blind)

#0098AA

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #577fec;
/* rgb */ color: rgb(87, 127, 236);
/* oklch */ color: oklch(62.2% 0.170 266.4);

Tailwind

colors: {
  custom: {
    50: '#94a3f3',
    500: '#577fec',
    950: '#000000',
  },
}

SCSS

$custom: #577fec;
$custom-light: #94a3f3;
$custom-dark: #000000;

JSON

{
  "hex": "#577fec",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 236
  },
  "hsl": {
    "h": 223.893,
    "s": 79.679,
    "l": 63.333
  },
  "oklch": {
    "l": 0.62197,
    "c": 0.16985,
    "h": 266.4
  },
  "luminance": 0.23261
}

Semantic roles & 50–950 ramp

primary

#577FEC

secondary

#EADCB5

accent

#A30ADC

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #577FEC

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

Preview Lab → · Contrast checker → · Palette generator →