#557FE4#557FE4

#557FE4 is a mid, vivid blue. Relative luminance 0.227; OKLCH L 61.6% C 0.160 H 265.1°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#557FE4
RGB	rgb(85, 127, 228)
HSL	hsl(222, 73%, 61%)
HSV	hsv(222, 63%, 89%)
CMYK	cmyk(62.7%, 44.3%, 0%, 10.6%)
CIE-LAB	lab(54.77, 16.73, -55.73)
CIE-LCH	lch(54.77, 58.18, 286.71°)
OKLab	oklab(61.59% -0.0137 -0.1591)
OKLCH	oklch(61.59% 0.16 265.1)
XYZ	xyz(25.3344, 22.7092, 76.4320)
Luminance	0.2271 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FE4 #E4BA55

analogous

#55C6E4 #557FE4 #7355E4

triadic

#557FE4 #E4557F #7FE455

tetradic

#557FE4 #E455C6 #E4BA55 #55E473

square

#557FE4 #E455C6 #E4BA55 #55E473

split-complementary

#557FE4 #E47355 #C6E455

monochromatic

#1A43A4 #2358D9 #557FE4 #8AA7EC #BFCFF5

Accessibility & contrast

On white

3.79

#557FE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#557FE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FE4

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FE4	#FFFFFF	#000000	##000000
##557FE4	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F8AE8

Deuteranopia (green-blind)

#387DE2

Tritanopia (blue-blind)

#0096A6

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #557fe4;
/* rgb */ color: rgb(85, 127, 228);
/* oklch */ color: oklch(61.6% 0.160 265.1);

Tailwind

colors: {
  custom: {
    50: '#92a3ed',
    500: '#557fe4',
    950: '#000000',
  },
}

SCSS

$custom: #557fe4;
$custom-light: #92a3ed;
$custom-dark: #000000;

JSON

{
  "hex": "#557fe4",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 228
  },
  "hsl": {
    "h": 222.378,
    "s": 72.589,
    "l": 61.373
  },
  "oklch": {
    "l": 0.61585,
    "c": 0.1597,
    "h": 265.1
  },
  "luminance": 0.22711
}

Semantic roles & 50–950 ramp

primary

#557FE4

secondary

#E5D5B0

accent

#9B11D5

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #557FE4

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

Preview Lab → · Contrast checker → · Palette generator →