#557BD5#557BD5

#557BD5 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.8% C 0.144 H 265.1°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX#557BD5
RGBrgb(85, 123, 213)
HSLhsl(222, 60%, 58%)
HSVhsv(222, 60%, 84%)
CMYKcmyk(60.1%, 42.3%, 0%, 16.5%)
CIE-LABlab(52.84, 14.11, -50.38)
CIE-LCHlch(52.84, 52.31, 285.65°)
OKLaboklab(59.83% -0.0123 -0.1434)
OKLCHoklch(59.83% 0.144 265.1)
XYZxyz(22.8354, 20.8994, 65.7685)
Luminance0.2090 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#557BD5 #D5AF55
analogous
#55BBD5 #557BD5 #6F55D5
triadic
#557BD5 #D5557B #7BD555
tetradic
#557BD5 #D555BB #D5AF55 #55D56F
square
#557BD5 #D555BB #D5AF55 #55D56F
split-complementary
#557BD5 #D56F55 #BBD555
monochromatic
#23428D #2F59BE #557BD5 #86A1E1 #B7C7ED

Accessibility & contrast

On white

4.05
#557BD5 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.18
#557BD5 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BD5
5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##557BD5#FFFFFF#000000##000000
##557BD51.004.055.185.18
#FFFFFF4.051.0021.0021.00
#0000005.1821.001.001.00
##0000005.1821.001.001.00

Color blindness preview

Protanopia (red-blind)
#5384D8
Deuteranopia (green-blind)
#4179D3
Tritanopia (blue-blind)
#008F9E
Achromatopsia (no color)
#7E7E7E

Design tokens & code

CSS
--color: #557bd5;
/* rgb */ color: rgb(85, 123, 213);
/* oklch */ color: oklch(59.8% 0.144 265.1);
Tailwind
colors: {
  custom: {
    50: '#8fa0e2',
    500: '#557bd5',
    950: '#000000',
  },
}
SCSS
$custom: #557bd5;
$custom-light: #8fa0e2;
$custom-dark: #000000;
JSON
{
  "hex": "#557bd5",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 213
  },
  "hsl": {
    "h": 222.188,
    "s": 60.377,
    "l": 58.431
  },
  "oklch": {
    "l": 0.59825,
    "c": 0.14396,
    "h": 265.1
  },
  "luminance": 0.20901
}

Semantic roles & 50–950 ramp

primary
#557BD5
secondary
#DCCDA9
accent
#B444E4
background
#F9F9FD
surface
#F2F2FB
border
#CCCCD4
text
#0D0E15
muted
#7E7E83

Preview Lab

Preview with #557BD5

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

Preview Lab → · Contrast checker → · Palette generator →

#557BD5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva