#577FFA#577FFA

#577FFA is a light, vivid blue. Relative luminance 0.241; OKLCH L 63.1% C 0.189 H 267.3°. Best body text is #000000 at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#577FFA
RGB	rgb(87, 127, 250)
HSL	hsl(225, 94%, 66%)
HSV	hsv(225, 65%, 98%)
CMYK	cmyk(65.2%, 49.2%, 0%, 2%)
CIE-LAB	lab(56.19, 24.54, -65.67)
CIE-LCH	lch(56.19, 70.11, 290.49°)
OKLab	oklab(63.12% -0.009 -0.1883)
OKLCH	oklch(63.12% 0.189 267.3)
XYZ	xyz(28.7692, 24.1044, 93.5604)
Luminance	0.2411 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FFA #FAD257

analogous

#57D0FA #577FFA #8057FA

triadic

#577FFA #FA577F #7FFA57

tetradic

#577FFA #FA57D0 #FAD257 #57FA80

square

#577FFA #FA57D0 #FAD257 #57FA80

split-complementary

#577FFA #FA8057 #D0FA57

monochromatic

#0638D0 #1C52F8 #577FFA #92ACFC #CEDAFE

Accessibility & contrast

On white

3.61

#577FFA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.82

#577FFA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FFA

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FFA	#FFFFFF	#000000	##000000
##577FFA	1.00	3.61	5.82	5.82
#FFFFFF	3.61	1.00	21.00	21.00
#000000	5.82	21.00	1.00	1.00
##000000	5.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A8FFE

Deuteranopia (green-blind)

#0080F7

Tritanopia (blue-blind)

#009CB1

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #577ffa;
/* rgb */ color: rgb(87, 127, 250);
/* oklch */ color: oklch(63.1% 0.189 267.3);

Tailwind

colors: {
  custom: {
    50: '#96a3fd',
    500: '#577ffa',
    950: '#000000',
  },
}

SCSS

$custom: #577ffa;
$custom-light: #96a3fd;
$custom-dark: #000000;

JSON

{
  "hex": "#577ffa",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 250
  },
  "hsl": {
    "h": 225.276,
    "s": 94.22,
    "l": 66.078
  },
  "oklch": {
    "l": 0.63122,
    "c": 0.18852,
    "h": 267.3
  },
  "luminance": 0.24107
}

Semantic roles & 50–950 ramp

primary

#577FFA

secondary

#F1E4BC

accent

#AD00E6

background

#FAFAFF

surface

#F3F3FF

border

#CDCDD7

text

#0F0F18

muted

#7F7F86

Preview Lab

Preview with #577FFA

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

Preview Lab → · Contrast checker → · Palette generator →