#577FF9#577FF9

#577FF9 is a light, vivid blue. Relative luminance 0.240; OKLCH L 63.1% C 0.187 H 267.2°. Best body text is #000000 at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#577FF9
RGB	rgb(87, 127, 249)
HSL	hsl(225, 93%, 66%)
HSV	hsv(225, 65%, 98%)
CMYK	cmyk(65.1%, 49%, 0%, 2.4%)
CIE-LAB	lab(56.13, 24.20, -65.22)
CIE-LCH	lch(56.13, 69.56, 290.36°)
OKLab	oklab(63.06% -0.0091 -0.187)
OKLCH	oklch(63.06% 0.187 267.2)
XYZ	xyz(28.6128, 24.0418, 92.7368)
Luminance	0.2404 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FF9 #F9D157

analogous

#57D0F9 #577FF9 #8057F9

triadic

#577FF9 #F9577F #7FF957

tetradic

#577FF9 #F957D0 #F9D157 #57F980

square

#577FF9 #F957D0 #F9D157 #57F980

split-complementary

#577FF9 #F98057 #D0F957

monochromatic

#0738CE #1C52F7 #577FF9 #92ACFB #CDD9FD

Accessibility & contrast

On white

3.62

#577FF9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.81

#577FF9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FF9

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FF9	#FFFFFF	#000000	##000000
##577FF9	1.00	3.62	5.81	5.81
#FFFFFF	3.62	1.00	21.00	21.00
#000000	5.81	21.00	1.00	1.00
##000000	5.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B8EFD

Deuteranopia (green-blind)

#0680F6

Tritanopia (blue-blind)

#009BB0

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #577ff9;
/* rgb */ color: rgb(87, 127, 249);
/* oklch */ color: oklch(63.1% 0.187 267.2);

Tailwind

colors: {
  custom: {
    50: '#96a3fc',
    500: '#577ff9',
    950: '#000000',
  },
}

SCSS

$custom: #577ff9;
$custom-light: #96a3fc;
$custom-dark: #000000;

JSON

{
  "hex": "#577ff9",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 249
  },
  "hsl": {
    "h": 225.185,
    "s": 93.103,
    "l": 65.882
  },
  "oklch": {
    "l": 0.63055,
    "c": 0.1872,
    "h": 267.2
  },
  "luminance": 0.24045
}

Semantic roles & 50–950 ramp

primary

#577FF9

secondary

#F1E3BB

accent

#AD00E6

background

#FAFAFF

surface

#F3F3FF

border

#CDCDD7

text

#0F0F18

muted

#7F7F86

Preview Lab

Preview with #577FF9

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

Preview Lab → · Contrast checker → · Palette generator →