#558BF3#558BF3

#558BF3 is a light, vivid blue. Relative luminance 0.269; OKLCH L 65.0% C 0.166 H 262.1°. Best body text is #000000 at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#558BF3
RGB	rgb(85, 139, 243)
HSL	hsl(219, 87%, 64%)
HSV	hsv(219, 65%, 95%)
CMYK	cmyk(65%, 42.8%, 0%, 4.7%)
CIE-LAB	lab(58.85, 14.56, -57.55)
CIE-LCH	lch(58.85, 59.36, 284.20°)
OKLab	oklab(65% -0.0227 -0.1643)
OKLCH	oklch(65% 0.166 262.1)
XYZ	xyz(29.1509, 26.8648, 88.4258)
Luminance	0.2687 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#558BF3 #F3BD55

analogous

#55DAF3 #558BF3 #6E55F3

triadic

#558BF3 #F3558B #8BF355

tetradic

#558BF3 #F355DA #F3BD55 #55F36E

square

#558BF3 #F355DA #F3BD55 #55F36E

split-complementary

#558BF3 #F36E55 #DAF355

monochromatic

#0E4BC0 #1C64EF #558BF3 #8EB2F7 #C7D9FB

Accessibility & contrast

On white

3.29

#558BF3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.37

#558BF3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #558BF3

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##558BF3	#FFFFFF	#000000	##000000
##558BF3	1.00	3.29	6.37	6.37
#FFFFFF	3.29	1.00	21.00	21.00
#000000	6.37	21.00	1.00	1.00
##000000	6.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A95F7

Deuteranopia (green-blind)

#4087F1

Tritanopia (blue-blind)

#00A3B3

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #558bf3;
/* rgb */ color: rgb(85, 139, 243);
/* oklch */ color: oklch(65.0% 0.166 262.1);

Tailwind

colors: {
  custom: {
    50: '#94acf7',
    500: '#558bf3',
    950: '#000000',
  },
}

SCSS

$custom: #558bf3;
$custom-light: #94acf7;
$custom-dark: #000000;

JSON

{
  "hex": "#558bf3",
  "rgb": {
    "r": 85,
    "g": 139,
    "b": 243
  },
  "hsl": {
    "h": 219.494,
    "s": 86.813,
    "l": 64.314
  },
  "oklch": {
    "l": 0.64998,
    "c": 0.16585,
    "h": 262.1
  },
  "luminance": 0.26868
}

Semantic roles & 50–950 ramp

primary

#558BF3

secondary

#EDDBB6

accent

#9602E3

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #558BF3

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

Preview Lab → · Contrast checker → · Palette generator →