#557AF0#557AF0

#557AF0 is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.4% C 0.182 H 267.7°. Best body text is #000000 at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#557AF0
RGB	rgb(85, 122, 240)
HSL	hsl(226, 84%, 64%)
HSV	hsv(226, 65%, 94%)
CMYK	cmyk(64.6%, 49.2%, 0%, 5.9%)
CIE-LAB	lab(54.17, 23.87, -63.38)
CIE-LCH	lch(54.17, 67.73, 290.64°)
OKLab	oklab(61.36% -0.0073 -0.1817)
OKLCH	oklch(61.36% 0.182 267.7)
XYZ	xyz(26.4286, 22.1392, 85.3017)
Luminance	0.2214 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557AF0 #F0CB55

analogous

#55C8F0 #557AF0 #7D55F0

triadic

#557AF0 #F0557A #7AF055

tetradic

#557AF0 #F055C8 #F0CB55 #55F07D

square

#557AF0 #F055C8 #F0CB55 #55F07D

split-complementary

#557AF0 #F07D55 #C8F055

monochromatic

#1039BA #1D4EEB #557AF0 #8DA6F5 #C5D2FA

Accessibility & contrast

On white

3.87

#557AF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.43

#557AF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557AF0

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557AF0	#FFFFFF	#000000	##000000
##557AF0	1.00	3.87	5.43	5.43
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.43	21.00	1.00	1.00
##000000	5.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#3889F4

Deuteranopia (green-blind)

#077BEE

Tritanopia (blue-blind)

#0095AA

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #557af0;
/* rgb */ color: rgb(85, 122, 240);
/* oklch */ color: oklch(61.4% 0.182 267.7);

Tailwind

colors: {
  custom: {
    50: '#94a0f6',
    500: '#557af0',
    950: '#000000',
  },
}

SCSS

$custom: #557af0;
$custom-light: #94a0f6;
$custom-dark: #000000;

JSON

{
  "hex": "#557af0",
  "rgb": {
    "r": 85,
    "g": 122,
    "b": 240
  },
  "hsl": {
    "h": 225.677,
    "s": 83.784,
    "l": 63.725
  },
  "oklch": {
    "l": 0.61362,
    "c": 0.18184,
    "h": 267.7
  },
  "luminance": 0.22142
}

Semantic roles & 50–950 ramp

primary

#557AF0

secondary

#ECDFB5

accent

#AC05E0

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #557AF0

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

Preview Lab → · Contrast checker → · Palette generator →