#577EEF#577EEF

#577EEF is a light, vivid blue. Relative luminance 0.232; OKLCH L 62.2% C 0.175 H 266.9°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#577EEF
RGB	rgb(87, 126, 239)
HSL	hsl(225, 83%, 64%)
HSV	hsv(225, 64%, 94%)
CMYK	cmyk(63.6%, 47.3%, 0%, 6.3%)
CIE-LAB	lab(55.25, 21.41, -61.08)
CIE-LCH	lch(55.25, 64.73, 289.32°)
OKLab	oklab(62.19% -0.0093 -0.1748)
OKLCH	oklch(62.19% 0.175 266.9)
XYZ	xyz(26.9660, 23.1775, 84.6972)
Luminance	0.2318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EEF #EFC857

analogous

#57CAEF #577EEF #7C57EF

triadic

#577EEF #EF577E #7EEF57

tetradic

#577EEF #EF57CA #EFC857 #57EF7C

square

#577EEF #EF57CA #EFC857 #57EF7C

split-complementary

#577EEF #EF7C57 #CAEF57

monochromatic

#123DBA #1F53EA #577EEF #8FA9F4 #C7D4FA

Accessibility & contrast

On white

3.73

#577EEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#577EEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EEF

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EEF	#FFFFFF	#000000	##000000
##577EEF	1.00	3.73	5.64	5.64
#FFFFFF	3.73	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#448CF3

Deuteranopia (green-blind)

#247EED

Tritanopia (blue-blind)

#0098AB

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #577eef;
/* rgb */ color: rgb(87, 126, 239);
/* oklch */ color: oklch(62.2% 0.175 266.9);

Tailwind

colors: {
  custom: {
    50: '#94a2f5',
    500: '#577eef',
    950: '#000000',
  },
}

SCSS

$custom: #577eef;
$custom-light: #94a2f5;
$custom-dark: #000000;

JSON

{
  "hex": "#577eef",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 239
  },
  "hsl": {
    "h": 224.605,
    "s": 82.609,
    "l": 63.922
  },
  "oklch": {
    "l": 0.62191,
    "c": 0.17508,
    "h": 266.9
  },
  "luminance": 0.2318
}

Semantic roles & 50–950 ramp

primary

#577EEF

secondary

#ECDEB6

accent

#A706DF

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #577EEF

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

Preview Lab → · Contrast checker → · Palette generator →