#578BFA#578BFA

#578BFA is a light, vivid blue. Relative luminance 0.274; OKLCH L 65.5% C 0.174 H 263.5°. Best body text is #000000 at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#578BFA
RGB	rgb(87, 139, 250)
HSL	hsl(221, 94%, 66%)
HSV	hsv(221, 65%, 98%)
CMYK	cmyk(65.2%, 44.4%, 0%, 2%)
CIE-LAB	lab(59.33, 17.27, -60.62)
CIE-LCH	lch(59.33, 63.04, 285.90°)
OKLab	oklab(65.52% -0.0199 -0.1733)
OKLCH	oklch(65.52% 0.174 263.5)
XYZ	xyz(30.4124, 27.3907, 94.1081)
Luminance	0.2739 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#578BFA #FAC657

analogous

#57DCFA #578BFA #7457FA

triadic

#578BFA #FA578B #8BFA57

tetradic

#578BFA #FA57DC #FAC657 #57FA74

square

#578BFA #FA57DC #FAC657 #57FA74

split-complementary

#578BFA #FA7457 #DCFA57

monochromatic

#0647D0 #1C62F8 #578BFA #92B4FC #CEDDFE

Accessibility & contrast

On white

3.24

#578BFA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.48

#578BFA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #578BFA

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##578BFA	#FFFFFF	#000000	##000000
##578BFA	1.00	3.24	6.48	6.48
#FFFFFF	3.24	1.00	21.00	21.00
#000000	6.48	21.00	1.00	1.00
##000000	6.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5597FE

Deuteranopia (green-blind)

#3888F8

Tritanopia (blue-blind)

#00A5B6

Achromatopsia (no color)

#8F8F8F

Design tokens & code

CSS

--color: #578bfa;
/* rgb */ color: rgb(87, 139, 250);
/* oklch */ color: oklch(65.5% 0.174 263.5);

Tailwind

colors: {
  custom: {
    50: '#96acfc',
    500: '#578bfa',
    950: '#000000',
  },
}

SCSS

$custom: #578bfa;
$custom-light: #96acfc;
$custom-dark: #000000;

JSON

{
  "hex": "#578bfa",
  "rgb": {
    "r": 87,
    "g": 139,
    "b": 250
  },
  "hsl": {
    "h": 220.859,
    "s": 94.22,
    "l": 66.078
  },
  "oklch": {
    "l": 0.65523,
    "c": 0.17443,
    "h": 263.5
  },
  "luminance": 0.27394
}

Semantic roles & 50–950 ramp

primary

#578BFA

secondary

#F1E0BC

accent

#9C00E6

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0F1018

muted

#7E7F86

Preview Lab

Preview with #578BFA

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

Preview Lab → · Contrast checker → · Palette generator →