#577BEC#577BEC

#577BEC is a mid, vivid blue. Relative luminance 0.222; OKLCH L 61.4% C 0.175 H 267.7°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#577BEC
RGB	rgb(87, 123, 236)
HSL	hsl(226, 80%, 63%)
HSV	hsv(226, 63%, 93%)
CMYK	cmyk(63.1%, 47.9%, 0%, 7.5%)
CIE-LAB	lab(54.29, 22.23, -60.97)
CIE-LCH	lch(54.29, 64.89, 290.03°)
OKLab	oklab(61.4% -0.0069 -0.1745)
OKLCH	oklch(61.4% 0.175 267.7)
XYZ	xyz(26.1486, 22.2459, 82.2565)
Luminance	0.2225 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BEC #ECC857

analogous

#57C6EC #577BEC #7D57EC

triadic

#577BEC #EC577B #7BEC57

tetradic

#577BEC #EC57C6 #ECC857 #57EC7D

square

#577BEC #EC57C6 #ECC857 #57EC7D

split-complementary

#577BEC #EC7D57 #C6EC57

monochromatic

#143BB4 #2050E6 #577BEC #8EA6F2 #C5D1F8

Accessibility & contrast

On white

3.85

#577BEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#577BEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BEC

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BEC	#FFFFFF	#000000	##000000
##577BEC	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4089F0

Deuteranopia (green-blind)

#207BEA

Tritanopia (blue-blind)

#0095A8

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577bec;
/* rgb */ color: rgb(87, 123, 236);
/* oklch */ color: oklch(61.4% 0.175 267.7);

Tailwind

colors: {
  custom: {
    50: '#94a0f3',
    500: '#577bec',
    950: '#000000',
  },
}

SCSS

$custom: #577bec;
$custom-light: #94a0f3;
$custom-dark: #000000;

JSON

{
  "hex": "#577bec",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 236
  },
  "hsl": {
    "h": 225.503,
    "s": 79.679,
    "l": 63.333
  },
  "oklch": {
    "l": 0.61395,
    "c": 0.17467,
    "h": 267.7
  },
  "luminance": 0.22248
}

Semantic roles & 50–950 ramp

primary

#577BEC

secondary

#EADDB5

accent

#A90ADC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #577BEC

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

Preview Lab → · Contrast checker → · Palette generator →