#557AC9#557AC9

#557AC9 is a mid, vivid blue. Relative luminance 0.201; OKLCH L 58.9% C 0.129 H 263.9°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX#557AC9
RGBrgb(85, 122, 201)
HSLhsl(221, 52%, 56%)
HSVhsv(221, 58%, 79%)
CMYKcmyk(57.7%, 39.3%, 0%, 21.2%)
CIE-LABlab(51.91, 10.72, -45.04)
CIE-LCHlch(51.91, 46.30, 283.39°)
OKLaboklab(58.9% -0.0136 -0.1278)
OKLCHoklch(58.9% 0.129 263.9)
XYZxyz(21.2449, 20.0657, 58.0005)
Luminance0.2007 (WCAG relative)
Temperaturecool
Familyblue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#557AC9 #C9A455
analogous
#55B4C9 #557AC9 #6A55C9
triadic
#557AC9 #C9557A #7AC955
tetradic
#557AC9 #C955B4 #C9A455 #55C96A
square
#557AC9 #C955B4 #C9A455 #55C96A
split-complementary
#557AC9 #C96A55 #B4C955
monochromatic
#27427C #365BAB #557AC9 #839ED8 #B2C3E7

Accessibility & contrast

On white

4.19
#557AC9 on #FFFFFF
AA ✗AA large ✓AAA ✗

On black

5.01
#557AC9 on #000000
AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557AC9
5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##557AC9#FFFFFF#000000##000000
##557AC91.004.195.015.01
#FFFFFF4.191.0021.0021.00
#0000005.0121.001.001.00
##0000005.0121.001.001.00

Color blindness preview

Protanopia (red-blind)
#5982CC
Deuteranopia (green-blind)
#4A77C7
Tritanopia (blue-blind)
#008C98
Achromatopsia (no color)
#7C7C7C

Design tokens & code

CSS
--color: #557ac9;
/* rgb */ color: rgb(85, 122, 201);
/* oklch */ color: oklch(58.9% 0.129 263.9);
Tailwind
colors: {
  custom: {
    50: '#8ea0da',
    500: '#557ac9',
    950: '#000000',
  },
}
SCSS
$custom: #557ac9;
$custom-light: #8ea0da;
$custom-dark: #000000;
JSON
{
  "hex": "#557ac9",
  "rgb": {
    "r": 85,
    "g": 122,
    "b": 201
  },
  "hsl": {
    "h": 220.862,
    "s": 51.786,
    "l": 56.078
  },
  "oklch": {
    "l": 0.58897,
    "c": 0.12853,
    "h": 263.9
  },
  "luminance": 0.20067
}

Semantic roles & 50–950 ramp

primary
#557AC9
secondary
#D5C6A5
accent
#AE4DDB
background
#F9F9FD
surface
#F1F2FA
border
#CBCCD3
text
#0D0E15
muted
#7E7E83

Preview Lab

Preview with #557AC9

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

Preview Lab → · Contrast checker → · Palette generator →

#557AC9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva