#578FEF#578FEF

#578FEF is a light, vivid blue. Relative luminance 0.279; OKLCH L 65.7% C 0.155 H 260.5°. Best body text is #000000 at 6.58:1 contrast (WCAG AA passes).

Color values

HEX	#578FEF
RGB	rgb(87, 143, 239)
HSL	hsl(218, 83%, 64%)
HSV	hsv(218, 64%, 94%)
CMYK	cmyk(63.6%, 40.2%, 0%, 6.3%)
CIE-LAB	lab(59.80, 11.15, -53.82)
CIE-LCH	lch(59.80, 54.96, 281.71°)
OKLab	oklab(65.68% -0.0257 -0.1533)
OKLCH	oklch(65.68% 0.155 260.5)
XYZ	xyz(29.3274, 27.9004, 85.4844)
Luminance	0.2790 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#578FEF #EFB757

analogous

#57DBEF #578FEF #6B57EF

triadic

#578FEF #EF578F #8FEF57

tetradic

#578FEF #EF57DB #EFB757 #57EF6B

square

#578FEF #EF57DB #EFB757 #57EF6B

split-complementary

#578FEF #EF6B57 #DBEF57

monochromatic

#1250BA #1F6AEA #578FEF #8FB4F4 #C7DAFA

Accessibility & contrast

On white

3.19

#578FEF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.58

#578FEF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #578FEF

6.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##578FEF	#FFFFFF	#000000	##000000
##578FEF	1.00	3.19	6.58	6.58
#FFFFFF	3.19	1.00	21.00	21.00
#000000	6.58	21.00	1.00	1.00
##000000	6.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6498F3

Deuteranopia (green-blind)

#4D8AED

Tritanopia (blue-blind)

#00A5B3

Achromatopsia (no color)

#909090

Design tokens & code

CSS

--color: #578fef;
/* rgb */ color: rgb(87, 143, 239);
/* oklch */ color: oklch(65.7% 0.155 260.5);

Tailwind

colors: {
  custom: {
    50: '#94aff5',
    500: '#578fef',
    950: '#000000',
  },
}

SCSS

$custom: #578fef;
$custom-light: #94aff5;
$custom-dark: #000000;

JSON

{
  "hex": "#578fef",
  "rgb": {
    "r": 87,
    "g": 143,
    "b": 239
  },
  "hsl": {
    "h": 217.895,
    "s": 82.609,
    "l": 63.922
  },
  "oklch": {
    "l": 0.65684,
    "c": 0.15539,
    "h": 260.5
  },
  "luminance": 0.27903
}

Semantic roles & 50–950 ramp

primary

#578FEF

secondary

#ECD8B6

accent

#8F06DF

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #578FEF

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

Preview Lab → · Contrast checker → · Palette generator →