#558FF4#558FF4

#558FF4 is a light, vivid blue. Relative luminance 0.281; OKLCH L 65.9% C 0.163 H 260.7°. Best body text is #000000 at 6.62:1 contrast (WCAG AA passes).

Color values

HEX	#558FF4
RGB	rgb(85, 143, 244)
HSL	hsl(218, 88%, 65%)
HSV	hsv(218, 65%, 96%)
CMYK	cmyk(65.2%, 41.4%, 0%, 4.3%)
CIE-LAB	lab(59.98, 12.51, -56.29)
CIE-LCH	lch(59.98, 57.66, 282.53°)
OKLab	oklab(65.89% -0.0263 -0.1605)
OKLCH	oklch(65.89% 0.163 260.7)
XYZ	xyz(29.8921, 28.1050, 89.4199)
Luminance	0.2811 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#558FF4 #F4BA55

analogous

#55DFF4 #558FF4 #6B55F4

triadic

#558FF4 #F4558F #8FF455

tetradic

#558FF4 #F455DF #F4BA55 #55F46B

square

#558FF4 #F455DF #F4BA55 #55F46B

split-complementary

#558FF4 #F46B55 #DFF455

monochromatic

#0D4FC2 #1C69F0 #558FF4 #8EB5F8 #C8DBFB

Accessibility & contrast

On white

3.17

#558FF4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.62

#558FF4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #558FF4

6.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##558FF4	#FFFFFF	#000000	##000000
##558FF4	1.00	3.17	6.62	6.62
#FFFFFF	3.17	1.00	21.00	21.00
#000000	6.62	21.00	1.00	1.00
##000000	6.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6098F8

Deuteranopia (green-blind)

#478AF2

Tritanopia (blue-blind)

#00A6B6

Achromatopsia (no color)

#919191

Design tokens & code

CSS

--color: #558ff4;
/* rgb */ color: rgb(85, 143, 244);
/* oklch */ color: oklch(65.9% 0.163 260.7);

Tailwind

colors: {
  custom: {
    50: '#94aff8',
    500: '#558ff4',
    950: '#000000',
  },
}

SCSS

$custom: #558ff4;
$custom-light: #94aff8;
$custom-dark: #000000;

JSON

{
  "hex": "#558ff4",
  "rgb": {
    "r": 85,
    "g": 143,
    "b": 244
  },
  "hsl": {
    "h": 218.113,
    "s": 87.845,
    "l": 64.51
  },
  "oklch": {
    "l": 0.65891,
    "c": 0.16268,
    "h": 260.7
  },
  "luminance": 0.28108
}

Semantic roles & 50–950 ramp

primary

#558FF4

secondary

#EEDAB7

accent

#9101E4

background

#F9FAFF

surface

#F2F4FF

border

#CCCED7

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #558FF4

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

Preview Lab → · Contrast checker → · Palette generator →