#355EC5#355EC5

#355EC5 is a mid, vivid blue. Relative luminance 0.128; OKLCH L 51.2% C 0.168 H 264.7°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#355EC5
RGB	rgb(53, 94, 197)
HSL	hsl(223, 58%, 49%)
HSV	hsv(223, 73%, 77%)
CMYK	cmyk(73.1%, 52.3%, 0%, 22.7%)
CIE-LAB	lab(42.45, 21.51, -57.99)
CIE-LCH	lch(42.45, 61.85, 290.35°)
OKLab	oklab(51.15% -0.0154 -0.1668)
OKLCH	oklch(51.15% 0.168 264.7)
XYZ	xyz(15.5454, 12.7918, 54.4623)
Luminance	0.1279 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355EC5 #C59C35

analogous

#35A6C5 #355EC5 #5435C5

triadic

#355EC5 #C5355E #5EC535

tetradic

#355EC5 #C535A6 #C59C35 #35C554

square

#355EC5 #C535A6 #C59C35 #35C554

split-complementary

#355EC5 #C55435 #A6C535

monochromatic

#1B3065 #284795 #355EC5 #6283D5 #93A9E2

Accessibility & contrast

On white

5.90

#355EC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#355EC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355EC5

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355EC5	#FFFFFF	#000000	##FFFFFF
##355EC5	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#186BC9

Deuteranopia (green-blind)

#005EC3

Tritanopia (blue-blind)

#007788

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #355ec5;
/* rgb */ color: rgb(53, 94, 197);
/* oklch */ color: oklch(51.2% 0.168 264.7);

Tailwind

colors: {
  custom: {
    50: '#7f8bd7',
    500: '#355ec5',
    950: '#000000',
  },
}

SCSS

$custom: #355ec5;
$custom-light: #7f8bd7;
$custom-dark: #000000;

JSON

{
  "hex": "#355ec5",
  "rgb": {
    "r": 53,
    "g": 94,
    "b": 197
  },
  "hsl": {
    "h": 222.917,
    "s": 57.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.51151,
    "c": 0.16756,
    "h": 264.7
  },
  "luminance": 0.12794
}

Semantic roles & 50–950 ramp

primary

#355EC5

secondary

#CDBA89

accent

#B547E1

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0B0B14

muted

#7C7C83

Preview Lab

Preview with #355EC5

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

Preview Lab → · Contrast checker → · Palette generator →