#557ACB#557ACB

#557ACB is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.0% C 0.131 H 264.2°. Best body text is #000000 at 5.03:1 contrast (WCAG AA passes).

Color values

HEX	#557ACB
RGB	rgb(85, 122, 203)
HSL	hsl(221, 53%, 56%)
HSV	hsv(221, 58%, 80%)
CMYK	cmyk(58.1%, 39.9%, 0%, 20.4%)
CIE-LAB	lab(52.02, 11.38, -46.01)
CIE-LCH	lch(52.02, 47.40, 283.90°)
OKLab	oklab(59.01% -0.0132 -0.1306)
OKLCH	oklch(59.01% 0.131 264.2)
XYZ	xyz(21.4817, 20.1604, 59.2477)
Luminance	0.2016 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557ACB #CBA655

analogous

#55B5CB #557ACB #6B55CB

triadic

#557ACB #CB557A #7ACB55

tetradic

#557ACB #CB55B5 #CBA655 #55CB6B

square

#557ACB #CB55B5 #CBA655 #55CB6B

split-complementary

#557ACB #CB6B55 #B5CB55

monochromatic

#27427F #355BAE #557ACB #849FD9 #B3C3E8

Accessibility & contrast

On white

4.17

#557ACB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.03

#557ACB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557ACB

5.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557ACB	#FFFFFF	#000000	##000000
##557ACB	1.00	4.17	5.03	5.03
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.03	21.00	1.00	1.00
##000000	5.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5782CE

Deuteranopia (green-blind)

#4877C9

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557acb;
/* rgb */ color: rgb(85, 122, 203);
/* oklch */ color: oklch(59.0% 0.131 264.2);

Tailwind

colors: {
  custom: {
    50: '#8ea0db',
    500: '#557acb',
    950: '#000000',
  },
}

SCSS

$custom: #557acb;
$custom-light: #8ea0db;
$custom-dark: #000000;

JSON

{
  "hex": "#557acb",
  "rgb": {
    "r": 85,
    "g": 122,
    "b": 203
  },
  "hsl": {
    "h": 221.186,
    "s": 53.153,
    "l": 56.471
  },
  "oklch": {
    "l": 0.59014,
    "c": 0.13131,
    "h": 264.2
  },
  "luminance": 0.20162
}

Semantic roles & 50–950 ramp

primary

#557ACB

secondary

#D6C7A6

accent

#AF4BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557ACB

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

Preview Lab → · Contrast checker → · Palette generator →