#577EF3#577EF3

#577EF3 is a light, vivid blue. Relative luminance 0.234; OKLCH L 62.5% C 0.180 H 267.2°. Best body text is #000000 at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#577EF3
RGB	rgb(87, 126, 243)
HSL	hsl(225, 87%, 65%)
HSV	hsv(225, 64%, 95%)
CMYK	cmyk(64.2%, 48.1%, 0%, 4.7%)
CIE-LAB	lab(55.50, 22.77, -62.91)
CIE-LCH	lch(55.50, 66.91, 289.90°)
OKLab	oklab(62.46% -0.0088 -0.1802)
OKLCH	oklch(62.46% 0.18 267.2)
XYZ	xyz(27.5634, 23.4165, 87.8439)
Luminance	0.2342 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EF3 #F3CC57

analogous

#57CCF3 #577EF3 #7E57F3

triadic

#577EF3 #F3577E #7EF357

tetradic

#577EF3 #F357CC #F3CC57 #57F37E

square

#577EF3 #F357CC #F3CC57 #57F37E

split-complementary

#577EF3 #F37E57 #CCF357

monochromatic

#0E3BC2 #1E52EF #577EF3 #90AAF7 #C9D6FB

Accessibility & contrast

On white

3.69

#577EF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.68

#577EF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EF3

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EF3	#FFFFFF	#000000	##000000
##577EF3	1.00	3.69	5.68	5.68
#FFFFFF	3.69	1.00	21.00	21.00
#000000	5.68	21.00	1.00	1.00
##000000	5.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#408CF7

Deuteranopia (green-blind)

#1A7EF1

Tritanopia (blue-blind)

#0099AD

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #577ef3;
/* rgb */ color: rgb(87, 126, 243);
/* oklch */ color: oklch(62.5% 0.180 267.2);

Tailwind

colors: {
  custom: {
    50: '#95a2f8',
    500: '#577ef3',
    950: '#000000',
  },
}

SCSS

$custom: #577ef3;
$custom-light: #95a2f8;
$custom-dark: #000000;

JSON

{
  "hex": "#577ef3",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 243
  },
  "hsl": {
    "h": 225,
    "s": 86.667,
    "l": 64.706
  },
  "oklch": {
    "l": 0.62456,
    "c": 0.18043,
    "h": 267.2
  },
  "luminance": 0.23419
}

Semantic roles & 50–950 ramp

primary

#577EF3

secondary

#EEE0B8

accent

#AB02E3

background

#F9F9FF

surface

#F2F2FF

border

#CCCCD7

text

#0F0F17

muted

#7E7E85

Preview Lab

Preview with #577EF3

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

Preview Lab → · Contrast checker → · Palette generator →