#557CE4#557CE4

#557CE4 is a mid, vivid blue. Relative luminance 0.219; OKLCH L 61.0% C 0.163 H 266.2°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#557CE4
RGB	rgb(85, 124, 228)
HSL	hsl(224, 73%, 61%)
HSV	hsv(224, 63%, 89%)
CMYK	cmyk(62.7%, 45.6%, 0%, 10.6%)
CIE-LAB	lab(53.97, 18.56, -57.01)
CIE-LCH	lch(53.97, 59.96, 288.04°)
OKLab	oklab(60.97% -0.0108 -0.1629)
OKLCH	oklch(60.97% 0.163 266.2)
XYZ	xyz(24.9527, 21.9458, 76.3047)
Luminance	0.2195 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CE4 #E4BD55

analogous

#55C4E4 #557CE4 #7655E4

triadic

#557CE4 #E4557C #7CE455

tetradic

#557CE4 #E455C4 #E4BD55 #55E476

square

#557CE4 #E455C4 #E4BD55 #55E476

split-complementary

#557CE4 #E47655 #C4E455

monochromatic

#1A40A4 #2354D9 #557CE4 #8AA5EC #BFCDF5

Accessibility & contrast

On white

3.90

#557CE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#557CE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CE4

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CE4	#FFFFFF	#000000	##000000
##557CE4	1.00	3.90	5.39	5.39
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4988E8

Deuteranopia (green-blind)

#307BE2

Tritanopia (blue-blind)

#0094A5

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #557ce4;
/* rgb */ color: rgb(85, 124, 228);
/* oklch */ color: oklch(61.0% 0.163 266.2);

Tailwind

colors: {
  custom: {
    50: '#92a1ed',
    500: '#557ce4',
    950: '#000000',
  },
}

SCSS

$custom: #557ce4;
$custom-light: #92a1ed;
$custom-dark: #000000;

JSON

{
  "hex": "#557ce4",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 228
  },
  "hsl": {
    "h": 223.636,
    "s": 72.589,
    "l": 61.373
  },
  "oklch": {
    "l": 0.60971,
    "c": 0.16328,
    "h": 266.2
  },
  "luminance": 0.21948
}

Semantic roles & 50–950 ramp

primary

#557CE4

secondary

#E5D7B0

accent

#9F11D5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557CE4

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

Preview Lab → · Contrast checker → · Palette generator →