#355CB1#355CB1

#355CB1 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.3% C 0.142 H 263.5°. Best body text is #FFFFFF at 6.33:1 contrast (WCAG AA passes).

Color values

HEX	#355CB1
RGB	rgb(53, 92, 177)
HSL	hsl(221, 54%, 45%)
HSV	hsv(221, 70%, 69%)
CMYK	cmyk(70.1%, 48%, 0%, 30.6%)
CIE-LAB	lab(40.55, 15.38, -49.38)
CIE-LCH	lch(40.55, 51.72, 287.30°)
OKLab	oklab(49.27% -0.0161 -0.1416)
OKLCH	oklch(49.27% 0.142 263.5)
XYZ	xyz(13.2284, 11.5841, 43.1253)
Luminance	0.1159 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355CB1 #B18A35

analogous

#359AB1 #355CB1 #4C35B1

triadic

#355CB1 #B1355C #5CB135

tetradic

#355CB1 #B1359A #B18A35 #35B14C

square

#355CB1 #B1359A #B18A35 #35B14C

split-complementary

#355CB1 #B14C35 #9AB135

monochromatic

#192B53 #274482 #355CB1 #577CCD #86A0DB

Accessibility & contrast

On white

6.33

#355CB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.32

#355CB1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355CB1

6.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355CB1	#FFFFFF	#000000	##FFFFFF
##355CB1	1.00	6.33	3.32	6.33
#FFFFFF	6.33	1.00	21.00	1.00
#000000	3.32	21.00	1.00	21.00
##FFFFFF	6.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F66B4

Deuteranopia (green-blind)

#0F5AAF

Tritanopia (blue-blind)

#00707E

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #355cb1;
/* rgb */ color: rgb(53, 92, 177);
/* oklch */ color: oklch(49.3% 0.142 263.5);

Tailwind

colors: {
  custom: {
    50: '#7b89c9',
    500: '#355cb1',
    950: '#000000',
  },
}

SCSS

$custom: #355cb1;
$custom-light: #7b89c9;
$custom-dark: #000000;

JSON

{
  "hex": "#355cb1",
  "rgb": {
    "r": 53,
    "g": 92,
    "b": 177
  },
  "hsl": {
    "h": 221.129,
    "s": 53.913,
    "l": 45.098
  },
  "oklch": {
    "l": 0.49272,
    "c": 0.14247,
    "h": 263.5
  },
  "luminance": 0.11586
}

Semantic roles & 50–950 ramp

primary

#355CB1

secondary

#C4AE7D

accent

#AF4BDD

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #355CB1

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

Preview Lab → · Contrast checker → · Palette generator →