#557CF0#557CF0

#557CF0 is a mid, vivid blue. Relative luminance 0.226; OKLCH L 61.8% C 0.179 H 267.1°. Best body text is #000000 at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#557CF0
RGB	rgb(85, 124, 240)
HSL	hsl(225, 84%, 64%)
HSV	hsv(225, 65%, 94%)
CMYK	cmyk(64.6%, 48.3%, 0%, 5.9%)
CIE-LAB	lab(54.69, 22.65, -62.54)
CIE-LCH	lch(54.69, 66.52, 289.91°)
OKLab	oklab(61.76% -0.0092 -0.1792)
OKLCH	oklch(61.76% 0.179 267.1)
XYZ	xyz(26.6767, 22.6354, 85.3844)
Luminance	0.2264 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CF0 #F0C955

analogous

#55C9F0 #557CF0 #7B55F0

triadic

#557CF0 #F0557C #7CF055

tetradic

#557CF0 #F055C9 #F0C955 #55F07B

square

#557CF0 #F055C9 #F0C955 #55F07B

split-complementary

#557CF0 #F07B55 #C9F055

monochromatic

#103BBA #1D51EB #557CF0 #8DA7F5 #C5D3FA

Accessibility & contrast

On white

3.80

#557CF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.53

#557CF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CF0

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CF0	#FFFFFF	#000000	##000000
##557CF0	1.00	3.80	5.53	5.53
#FFFFFF	3.80	1.00	21.00	21.00
#000000	5.53	21.00	1.00	1.00
##000000	5.53	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E8AF4

Deuteranopia (green-blind)

#167CEE

Tritanopia (blue-blind)

#0097AA

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #557cf0;
/* rgb */ color: rgb(85, 124, 240);
/* oklch */ color: oklch(61.8% 0.179 267.1);

Tailwind

colors: {
  custom: {
    50: '#94a1f6',
    500: '#557cf0',
    950: '#000000',
  },
}

SCSS

$custom: #557cf0;
$custom-light: #94a1f6;
$custom-dark: #000000;

JSON

{
  "hex": "#557cf0",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 240
  },
  "hsl": {
    "h": 224.903,
    "s": 83.784,
    "l": 63.725
  },
  "oklch": {
    "l": 0.61758,
    "c": 0.17943,
    "h": 267.1
  },
  "luminance": 0.22638
}

Semantic roles & 50–950 ramp

primary

#557CF0

secondary

#ECDEB5

accent

#A905E0

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #557CF0

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

Preview Lab → · Contrast checker → · Palette generator →