#3557BA#3557BA

#3557BA is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.9% C 0.161 H 266.2°. Best body text is #FFFFFF at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#3557BA
RGB	rgb(53, 87, 186)
HSL	hsl(225, 56%, 47%)
HSV	hsv(225, 72%, 73%)
CMYK	cmyk(71.5%, 53.2%, 0%, 27.1%)
CIE-LAB	lab(39.78, 21.97, -55.91)
CIE-LCH	lch(39.78, 60.07, 291.46°)
OKLab	oklab(48.88% -0.0106 -0.1608)
OKLCH	oklch(48.88% 0.161 266.2)
XYZ	xyz(13.7362, 11.1170, 47.8667)
Luminance	0.1112 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3557BA #BA9835

analogous

#359ABA #3557BA #5635BA

triadic

#3557BA #BA3557 #57BA35

tetradic

#3557BA #BA359A #BA9835 #35BA56

square

#3557BA #BA359A #BA9835 #35BA56

split-complementary

#3557BA #BA5635 #9ABA35

monochromatic

#1A2A5B #27418A #3557BA #5C7AD0 #8BA0DE

Accessibility & contrast

On white

6.51

#3557BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#3557BA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3557BA

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3557BA	#FFFFFF	#000000	##FFFFFF
##3557BA	1.00	6.51	3.22	6.51
#FFFFFF	6.51	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1064BD

Deuteranopia (green-blind)

#0058B8

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3557ba;
/* rgb */ color: rgb(53, 87, 186);
/* oklch */ color: oklch(48.9% 0.161 266.2);

Tailwind

colors: {
  custom: {
    50: '#7d85cf',
    500: '#3557ba',
    950: '#000000',
  },
}

SCSS

$custom: #3557ba;
$custom-light: #7d85cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3557ba",
  "rgb": {
    "r": 53,
    "g": 87,
    "b": 186
  },
  "hsl": {
    "h": 224.662,
    "s": 55.649,
    "l": 46.863
  },
  "oklch": {
    "l": 0.48881,
    "c": 0.16119,
    "h": 266.2
  },
  "luminance": 0.11118
}

Semantic roles & 50–950 ramp

primary

#3557BA

secondary

#C8B682

accent

#B949DF

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3557BA

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

Preview Lab → · Contrast checker → · Palette generator →