#577EEC#577EEC

#577EEC is a mid, vivid blue. Relative luminance 0.230; OKLCH L 62.0% C 0.171 H 266.7°. Best body text is #000000 at 5.60:1 contrast (WCAG AA passes).

Color values

HEX	#577EEC
RGB	rgb(87, 126, 236)
HSL	hsl(224, 80%, 63%)
HSV	hsv(224, 63%, 93%)
CMYK	cmyk(63.1%, 46.6%, 0%, 7.5%)
CIE-LAB	lab(55.07, 20.40, -59.70)
CIE-LCH	lch(55.07, 63.09, 288.86°)
OKLab	oklab(62% -0.0097 -0.1708)
OKLCH	oklch(62% 0.171 266.7)
XYZ	xyz(26.5265, 23.0017, 82.3825)
Luminance	0.2300 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EEC #ECC557

analogous

#57C9EC #577EEC #7A57EC

triadic

#577EEC #EC577E #7EEC57

tetradic

#577EEC #EC57C9 #ECC557 #57EC7A

square

#577EEC #EC57C9 #ECC557 #57EC7A

split-complementary

#577EEC #EC7A57 #C9EC57

monochromatic

#143EB4 #2054E6 #577EEC #8EA8F2 #C5D2F8

Accessibility & contrast

On white

3.75

#577EEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.60

#577EEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EEC

5.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EEC	#FFFFFF	#000000	##000000
##577EEC	1.00	3.75	5.60	5.60
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.60	21.00	1.00	1.00
##000000	5.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#478BF0

Deuteranopia (green-blind)

#2A7DEA

Tritanopia (blue-blind)

#0097AA

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #577eec;
/* rgb */ color: rgb(87, 126, 236);
/* oklch */ color: oklch(62.0% 0.171 266.7);

Tailwind

colors: {
  custom: {
    50: '#94a2f3',
    500: '#577eec',
    950: '#000000',
  },
}

SCSS

$custom: #577eec;
$custom-light: #94a2f3;
$custom-dark: #000000;

JSON

{
  "hex": "#577eec",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 236
  },
  "hsl": {
    "h": 224.295,
    "s": 79.679,
    "l": 63.333
  },
  "oklch": {
    "l": 0.61995,
    "c": 0.17105,
    "h": 266.7
  },
  "luminance": 0.23004
}

Semantic roles & 50–950 ramp

primary

#577EEC

secondary

#EADCB5

accent

#A50ADC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #577EEC

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

Preview Lab → · Contrast checker → · Palette generator →