#577FF1#577FF1

#577FF1 is a light, vivid blue. Relative luminance 0.236; OKLCH L 62.5% C 0.177 H 266.7°. Best body text is #000000 at 5.71:1 contrast (WCAG AA passes).

Color values

HEX	#577FF1
RGB	rgb(87, 127, 241)
HSL	hsl(224, 85%, 64%)
HSV	hsv(224, 64%, 95%)
CMYK	cmyk(63.9%, 47.3%, 0%, 5.5%)
CIE-LAB	lab(55.64, 21.48, -61.58)
CIE-LCH	lch(55.64, 65.22, 289.23°)
OKLab	oklab(62.52% -0.01 -0.1763)
OKLCH	oklch(62.52% 0.177 266.7)
XYZ	xyz(27.3916, 23.5533, 86.3048)
Luminance	0.2356 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FF1 #F1C957

analogous

#57CCF1 #577FF1 #7C57F1

triadic

#577FF1 #F1577F #7FF157

tetradic

#577FF1 #F157CC #F1C957 #57F17C

square

#577FF1 #F157CC #F1C957 #57F17C

split-complementary

#577FF1 #F17C57 #CCF157

monochromatic

#103DBE #1F54EC #577FF1 #8FAAF6 #C8D5FA

Accessibility & contrast

On white

3.68

#577FF1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.71

#577FF1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FF1

5.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FF1	#FFFFFF	#000000	##000000
##577FF1	1.00	3.68	5.71	5.71
#FFFFFF	3.68	1.00	21.00	21.00
#000000	5.71	21.00	1.00	1.00
##000000	5.71	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#448DF5

Deuteranopia (green-blind)

#237FEF

Tritanopia (blue-blind)

#0099AC

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #577ff1;
/* rgb */ color: rgb(87, 127, 241);
/* oklch */ color: oklch(62.5% 0.177 266.7);

Tailwind

colors: {
  custom: {
    50: '#95a3f6',
    500: '#577ff1',
    950: '#000000',
  },
}

SCSS

$custom: #577ff1;
$custom-light: #95a3f6;
$custom-dark: #000000;

JSON

{
  "hex": "#577ff1",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 241
  },
  "hsl": {
    "h": 224.416,
    "s": 84.615,
    "l": 64.314
  },
  "oklch": {
    "l": 0.62522,
    "c": 0.17656,
    "h": 266.7
  },
  "luminance": 0.23556
}

Semantic roles & 50–950 ramp

primary

#577FF1

secondary

#EDDFB7

accent

#A804E1

background

#F9FAFF

surface

#F2F3FF

border

#CCCDD7

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #577FF1

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

Preview Lab → · Contrast checker → · Palette generator →