#557CEC#557CEC

#557CEC is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.5% C 0.174 H 266.8°. Best body text is #000000 at 5.48:1 contrast (WCAG AA passes).

Color values

HEX	#557CEC
RGB	rgb(85, 124, 236)
HSL	hsl(225, 80%, 63%)
HSV	hsv(225, 64%, 93%)
CMYK	cmyk(64%, 47.5%, 0%, 7.5%)
CIE-LAB	lab(54.45, 21.29, -60.71)
CIE-LCH	lch(54.45, 64.33, 289.32°)
OKLab	oklab(61.49% -0.0097 -0.1738)
OKLCH	oklch(61.49% 0.174 266.8)
XYZ	xyz(26.0891, 22.4003, 82.2894)
Luminance	0.2240 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CEC #ECC555

analogous

#55C8EC #557CEC #7955EC

triadic

#557CEC #EC557C #7CEC55

tetradic

#557CEC #EC55C8 #ECC555 #55EC79

square

#557CEC #EC55C8 #ECC555 #55EC79

split-complementary

#557CEC #EC7955 #C8EC55

monochromatic

#143DB3 #1E52E6 #557CEC #8CA6F2 #C3D1F8

Accessibility & contrast

On white

3.83

#557CEC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.48

#557CEC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CEC

5.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CEC	#FFFFFF	#000000	##000000
##557CEC	1.00	3.83	5.48	5.48
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.48	21.00	1.00	1.00
##000000	5.48	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4289F0

Deuteranopia (green-blind)

#227CEA

Tritanopia (blue-blind)

#0096A9

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #557cec;
/* rgb */ color: rgb(85, 124, 236);
/* oklch */ color: oklch(61.5% 0.174 266.8);

Tailwind

colors: {
  custom: {
    50: '#93a1f3',
    500: '#557cec',
    950: '#000000',
  },
}

SCSS

$custom: #557cec;
$custom-light: #93a1f3;
$custom-dark: #000000;

JSON

{
  "hex": "#557cec",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 236
  },
  "hsl": {
    "h": 224.503,
    "s": 79.894,
    "l": 62.941
  },
  "oklch": {
    "l": 0.61492,
    "c": 0.17407,
    "h": 266.8
  },
  "luminance": 0.22403
}

Semantic roles & 50–950 ramp

primary

#557CEC

secondary

#EADCB3

accent

#A609DC

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #557CEC

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

Preview Lab → · Contrast checker → · Palette generator →