#577AEE#577AEE

#577AEE is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.3% C 0.179 H 268.2°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#577AEE
RGB	rgb(87, 122, 238)
HSL	hsl(226, 82%, 64%)
HSV	hsv(226, 63%, 93%)
CMYK	cmyk(63.4%, 48.7%, 0%, 6.7%)
CIE-LAB	lab(54.15, 23.52, -62.30)
CIE-LCH	lch(54.15, 66.59, 290.68°)
OKLab	oklab(61.33% -0.0057 -0.1785)
OKLCH	oklch(61.33% 0.179 268.2)
XYZ	xyz(26.3174, 22.1160, 83.7543)
Luminance	0.2212 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AEE #EECB57

analogous

#57C5EE #577AEE #7F57EE

triadic

#577AEE #EE577A #7AEE57

tetradic

#577AEE #EE57C5 #EECB57 #57EE7F

square

#577AEE #EE57C5 #EECB57 #57EE7F

split-complementary

#577AEE #EE7F57 #C5EE57

monochromatic

#1339B8 #1F4EE8 #577AEE #8FA6F4 #C6D2F9

Accessibility & contrast

On white

3.87

#577AEE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#577AEE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AEE

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AEE	#FFFFFF	#000000	##000000
##577AEE	1.00	3.87	5.42	5.42
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B89F2

Deuteranopia (green-blind)

#157BEC

Tritanopia (blue-blind)

#0095A9

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577aee;
/* rgb */ color: rgb(87, 122, 238);
/* oklch */ color: oklch(61.3% 0.179 268.2);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#577aee",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 238
  },
  "hsl": {
    "h": 226.093,
    "s": 81.622,
    "l": 63.725
  },
  "oklch": {
    "l": 0.6133,
    "c": 0.17856,
    "h": 268.2
  },
  "luminance": 0.22118
}

Semantic roles & 50–950 ramp

primary

#577AEE

secondary

#EBDFB6

accent

#AC08DE

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #577AEE

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

Preview Lab → · Contrast checker → · Palette generator →