#3557AD#3557AD

#3557AD is a mid, vivid blue. Relative luminance 0.106; OKLCH L 47.9% C 0.143 H 265.2°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#3557AD
RGB	rgb(53, 87, 173)
HSL	hsl(223, 53%, 44%)
HSV	hsv(223, 69%, 68%)
CMYK	cmyk(69.4%, 49.7%, 0%, 32.2%)
CIE-LAB	lab(38.88, 17.15, -49.71)
CIE-LCH	lch(38.88, 52.58, 289.04°)
OKLab	oklab(47.91% -0.012 -0.1426)
OKLCH	oklch(47.91% 0.143 265.2)
XYZ	xyz(12.4166, 10.5892, 40.9166)
Luminance	0.1059 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3557AD #AD8B35

analogous

#3593AD #3557AD #4F35AD

triadic

#3557AD #AD3557 #57AD35

tetradic

#3557AD #AD3593 #AD8B35 #35AD4F

square

#3557AD #AD3593 #AD8B35 #35AD4F

split-complementary

#3557AD #AD4F35 #93AD35

monochromatic

#18284F #273F7E #3557AD #5476CB #839CD9

Accessibility & contrast

On white

6.74

#3557AD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#3557AD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3557AD

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3557AD	#FFFFFF	#000000	##FFFFFF
##3557AD	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2761B0

Deuteranopia (green-blind)

#0056AB

Tritanopia (blue-blind)

#006B7A

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3557ad;
/* rgb */ color: rgb(53, 87, 173);
/* oklch */ color: oklch(47.9% 0.143 265.2);

Tailwind

colors: {
  custom: {
    50: '#7b85c6',
    500: '#3557ad',
    950: '#000000',
  },
}

SCSS

$custom: #3557ad;
$custom-light: #7b85c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3557ad",
  "rgb": {
    "r": 53,
    "g": 87,
    "b": 173
  },
  "hsl": {
    "h": 223,
    "s": 53.097,
    "l": 44.314
  },
  "oklch": {
    "l": 0.47914,
    "c": 0.14311,
    "h": 265.2
  },
  "luminance": 0.1059
}

Semantic roles & 50–950 ramp

primary

#3557AD

secondary

#C3AE7B

accent

#B34BDD

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #3557AD

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

Preview Lab → · Contrast checker → · Palette generator →