#557DF0#557DF0

#557DF0 is a mid, vivid blue. Relative luminance 0.229; OKLCH L 62.0% C 0.178 H 266.8°. Best body text is #000000 at 5.58:1 contrast (WCAG AA passes).

Color values

HEX	#557DF0
RGB	rgb(85, 125, 240)
HSL	hsl(225, 84%, 64%)
HSV	hsv(225, 65%, 94%)
CMYK	cmyk(64.6%, 47.9%, 0%, 5.9%)
CIE-LAB	lab(54.96, 22.04, -62.12)
CIE-LCH	lch(54.96, 65.92, 289.53°)
OKLab	oklab(61.96% -0.0101 -0.1779)
OKLCH	oklch(61.96% 0.178 266.8)
XYZ	xyz(26.8027, 22.8873, 85.4264)
Luminance	0.2289 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557DF0 #F0C855

analogous

#55CAF0 #557DF0 #7A55F0

triadic

#557DF0 #F0557D #7DF055

tetradic

#557DF0 #F055CA #F0C855 #55F07A

square

#557DF0 #F055CA #F0C855 #55F07A

split-complementary

#557DF0 #F07A55 #CAF055

monochromatic

#103CBA #1D52EB #557DF0 #8DA8F5 #C5D3FA

Accessibility & contrast

On white

3.76

#557DF0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.58

#557DF0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557DF0

5.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557DF0	#FFFFFF	#000000	##000000
##557DF0	1.00	3.76	5.58	5.58
#FFFFFF	3.76	1.00	21.00	21.00
#000000	5.58	21.00	1.00	1.00
##000000	5.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#408BF4

Deuteranopia (green-blind)

#1B7DEE

Tritanopia (blue-blind)

#0098AB

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #557df0;
/* rgb */ color: rgb(85, 125, 240);
/* oklch */ color: oklch(62.0% 0.178 266.8);

Tailwind

colors: {
  custom: {
    50: '#94a2f6',
    500: '#557df0',
    950: '#000000',
  },
}

SCSS

$custom: #557df0;
$custom-light: #94a2f6;
$custom-dark: #000000;

JSON

{
  "hex": "#557df0",
  "rgb": {
    "r": 85,
    "g": 125,
    "b": 240
  },
  "hsl": {
    "h": 224.516,
    "s": 83.784,
    "l": 63.725
  },
  "oklch": {
    "l": 0.61957,
    "c": 0.17824,
    "h": 266.8
  },
  "luminance": 0.2289
}

Semantic roles & 50–950 ramp

primary

#557DF0

secondary

#ECDEB5

accent

#A805E0

background

#F9F9FF

surface

#F2F2FE

border

#CCCCD6

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #557DF0

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

Preview Lab → · Contrast checker → · Palette generator →