#557BE4#557BE4

#557BE4 is a mid, vivid blue. Relative luminance 0.217; OKLCH L 60.8% C 0.164 H 266.6°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#557BE4
RGB	rgb(85, 123, 228)
HSL	hsl(224, 73%, 61%)
HSV	hsv(224, 63%, 89%)
CMYK	cmyk(62.7%, 46.1%, 0%, 10.6%)
CIE-LAB	lab(53.70, 19.18, -57.44)
CIE-LCH	lch(53.70, 60.55, 288.46°)
OKLab	oklab(60.77% -0.0098 -0.1642)
OKLCH	oklch(60.77% 0.164 266.6)
XYZ	xyz(24.8281, 21.6964, 76.2632)
Luminance	0.2170 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BE4 #E4BE55

analogous

#55C3E4 #557BE4 #7755E4

triadic

#557BE4 #E4557B #7BE455

tetradic

#557BE4 #E455C3 #E4BE55 #55E477

square

#557BE4 #E455C3 #E4BE55 #55E477

split-complementary

#557BE4 #E47755 #C3E455

monochromatic

#1A3FA4 #2353D9 #557BE4 #8AA4EC #BFCDF5

Accessibility & contrast

On white

3.93

#557BE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.34

#557BE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BE4

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BE4	#FFFFFF	#000000	##000000
##557BE4	1.00	3.93	5.34	5.34
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.34	21.00	1.00	1.00
##000000	5.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4787E8

Deuteranopia (green-blind)

#2E7AE2

Tritanopia (blue-blind)

#0093A4

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #557be4;
/* rgb */ color: rgb(85, 123, 228);
/* oklch */ color: oklch(60.8% 0.164 266.6);

Tailwind

colors: {
  custom: {
    50: '#92a0ed',
    500: '#557be4',
    950: '#000000',
  },
}

SCSS

$custom: #557be4;
$custom-light: #92a0ed;
$custom-dark: #000000;

JSON

{
  "hex": "#557be4",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 228
  },
  "hsl": {
    "h": 224.056,
    "s": 72.589,
    "l": 61.373
  },
  "oklch": {
    "l": 0.60767,
    "c": 0.16448,
    "h": 266.6
  },
  "luminance": 0.21699
}

Semantic roles & 50–950 ramp

primary

#557BE4

secondary

#E5D7B0

accent

#A111D5

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557BE4

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

Preview Lab → · Contrast checker → · Palette generator →