#3557AE#3557AE

#3557AE is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.0% C 0.145 H 265.3°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#3557AE
RGB	rgb(53, 87, 174)
HSL	hsl(223, 53%, 45%)
HSV	hsv(223, 70%, 68%)
CMYK	cmyk(69.5%, 50%, 0%, 31.8%)
CIE-LAB	lab(38.95, 17.52, -50.19)
CIE-LCH	lch(38.95, 53.16, 289.25°)
OKLab	oklab(47.99% -0.0119 -0.144)
OKLCH	oklch(47.99% 0.145 265.3)
XYZ	xyz(12.5137, 10.6280, 41.4281)
Luminance	0.1063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3557AE #AE8C35

analogous

#3594AE #3557AE #4F35AE

triadic

#3557AE #AE3557 #57AE35

tetradic

#3557AE #AE3594 #AE8C35 #35AE4F

square

#3557AE #AE3594 #AE8C35 #35AE4F

split-complementary

#3557AE #AE4F35 #94AE35

monochromatic

#182850 #27407F #3557AE #5576CB #849CDA

Accessibility & contrast

On white

6.72

#3557AE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3557AE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3557AE

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3557AE	#FFFFFF	#000000	##FFFFFF
##3557AE	1.00	6.72	3.13	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2662B1

Deuteranopia (green-blind)

#0056AC

Tritanopia (blue-blind)

#006B7A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3557ae;
/* rgb */ color: rgb(53, 87, 174);
/* oklch */ color: oklch(48.0% 0.145 265.3);

Tailwind

colors: {
  custom: {
    50: '#7b85c7',
    500: '#3557ae',
    950: '#000000',
  },
}

SCSS

$custom: #3557ae;
$custom-light: #7b85c7;
$custom-dark: #000000;

JSON

{
  "hex": "#3557ae",
  "rgb": {
    "r": 53,
    "g": 87,
    "b": 174
  },
  "hsl": {
    "h": 223.14,
    "s": 53.304,
    "l": 44.51
  },
  "oklch": {
    "l": 0.47986,
    "c": 0.14451,
    "h": 265.3
  },
  "luminance": 0.10629
}

Semantic roles & 50–950 ramp

primary

#3557AE

secondary

#C3AF7C

accent

#B44BDD

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3557AE

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

Preview Lab → · Contrast checker → · Palette generator →