#577BEE#577BEE

#577BEE is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.5% C 0.177 H 267.8°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#577BEE
RGB	rgb(87, 123, 238)
HSL	hsl(226, 82%, 64%)
HSV	hsv(226, 63%, 93%)
CMYK	cmyk(63.4%, 48.3%, 0%, 6.7%)
CIE-LAB	lab(54.41, 22.91, -61.88)
CIE-LCH	lch(54.41, 65.99, 290.31°)
OKLab	oklab(61.53% -0.0067 -0.1772)
OKLCH	oklch(61.53% 0.177 267.8)
XYZ	xyz(26.4408, 22.3628, 83.7954)
Luminance	0.2236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BEE #EECA57

analogous

#57C7EE #577BEE #7E57EE

triadic

#577BEE #EE577B #7BEE57

tetradic

#577BEE #EE57C7 #EECA57 #57EE7E

square

#577BEE #EE57C7 #EECA57 #57EE7E

split-complementary

#577BEE #EE7E57 #C7EE57

monochromatic

#133AB8 #1F4FE8 #577BEE #8FA7F4 #C6D2F9

Accessibility & contrast

On white

3.84

#577BEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#577BEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BEE

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BEE	#FFFFFF	#000000	##000000
##577BEE	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E89F2

Deuteranopia (green-blind)

#1A7CEC

Tritanopia (blue-blind)

#0096A9

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577bee;
/* rgb */ color: rgb(87, 123, 238);
/* oklch */ color: oklch(61.5% 0.177 267.8);

Tailwind

colors: {
  custom: {
    50: '#94a0f4',
    500: '#577bee',
    950: '#000000',
  },
}

SCSS

$custom: #577bee;
$custom-light: #94a0f4;
$custom-dark: #000000;

JSON

{
  "hex": "#577bee",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 238
  },
  "hsl": {
    "h": 225.695,
    "s": 81.622,
    "l": 63.725
  },
  "oklch": {
    "l": 0.61528,
    "c": 0.17736,
    "h": 267.8
  },
  "luminance": 0.22365
}

Semantic roles & 50–950 ramp

primary

#577BEE

secondary

#EBDEB6

accent

#AB08DE

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #577BEE

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

Preview Lab → · Contrast checker → · Palette generator →