#3557C0#3557C0

#3557C0 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 49.3% C 0.169 H 266.6°. Best body text is #FFFFFF at 6.41:1 contrast (WCAG AA passes).

Color values

HEX	#3557C0
RGB	rgb(53, 87, 192)
HSL	hsl(225, 57%, 48%)
HSV	hsv(225, 72%, 75%)
CMYK	cmyk(72.4%, 54.7%, 0%, 24.7%)
CIE-LAB	lab(40.21, 24.19, -58.71)
CIE-LCH	lch(40.21, 63.50, 292.39°)
OKLab	oklab(49.35% -0.0102 -0.1691)
OKLCH	oklch(49.35% 0.169 266.6)
XYZ	xyz(14.3875, 11.3775, 51.2968)
Luminance	0.1138 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3557C0 #C09E35

analogous

#359CC0 #3557C0 #5935C0

triadic

#3557C0 #C03557 #57C035

tetradic

#3557C0 #C0359C #C09E35 #35C059

square

#3557C0 #C0359C #C09E35 #35C059

split-complementary

#3557C0 #C05935 #9CC035

monochromatic

#1B2C60 #284190 #3557C0 #5F7CD3 #8FA3E0

Accessibility & contrast

On white

6.41

#3557C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#3557C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3557C0

6.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3557C0	#FFFFFF	#000000	##FFFFFF
##3557C0	1.00	6.41	3.28	6.41
#FFFFFF	6.41	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0065C4

Deuteranopia (green-blind)

#0059BE

Tritanopia (blue-blind)

#007183

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #3557c0;
/* rgb */ color: rgb(53, 87, 192);
/* oklch */ color: oklch(49.3% 0.169 266.6);

Tailwind

colors: {
  custom: {
    50: '#7f85d4',
    500: '#3557c0',
    950: '#000000',
  },
}

SCSS

$custom: #3557c0;
$custom-light: #7f85d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3557c0",
  "rgb": {
    "r": 53,
    "g": 87,
    "b": 192
  },
  "hsl": {
    "h": 225.324,
    "s": 56.735,
    "l": 48.039
  },
  "oklch": {
    "l": 0.49345,
    "c": 0.1694,
    "h": 266.6
  },
  "luminance": 0.11379
}

Semantic roles & 50–950 ramp

primary

#3557C0

secondary

#CBBA86

accent

#BB48E0

background

#F8F8FD

surface

#EFEFFA

border

#CACAD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #3557C0

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

Preview Lab → · Contrast checker → · Palette generator →