#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
RGB	rgb(85, 122, 201)
HSL	hsl(221, 52%, 56%)
HSV	hsv(221, 58%, 79%)
CMYK	cmyk(57.7%, 39.3%, 0%, 21.2%)
CIE-LAB	lab(51.91, 10.72, -45.04)
CIE-LCH	lch(51.91, 46.30, 283.39°)
OKLab	oklab(58.9% -0.0136 -0.1278)
OKLCH	oklch(58.9% 0.129 263.9)
XYZ	xyz(21.2449, 20.0657, 58.0005)
Luminance	0.2007 (WCAG relative)
Temperature	cool
Family	blue

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
##557AC9	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

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 →