#355CB3#355CB3

#355CB3 is a mid, vivid blue. Relative luminance 0.117; OKLCH L 49.4% C 0.145 H 263.8°. Best body text is #FFFFFF at 6.30:1 contrast (WCAG AA passes).

Color values

HEX	#355CB3
RGB	rgb(53, 92, 179)
HSL	hsl(221, 54%, 45%)
HSV	hsv(221, 70%, 70%)
CMYK	cmyk(70.4%, 48.6%, 0%, 29.8%)
CIE-LAB	lab(40.68, 16.12, -50.35)
CIE-LCH	lch(40.68, 52.86, 287.75°)
OKLab	oklab(49.41% -0.0158 -0.1444)
OKLCH	oklch(49.41% 0.145 263.8)
XYZ	xyz(13.4292, 11.6645, 44.1828)
Luminance	0.1167 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355CB3 #B38C35

analogous

#359BB3 #355CB3 #4D35B3

triadic

#355CB3 #B3355C #5CB335

tetradic

#355CB3 #B3359B #B38C35 #35B34D

square

#355CB3 #B3359B #B38C35 #35B34D

split-complementary

#355CB3 #B34D35 #9BB335

monochromatic

#192B55 #274484 #355CB3 #587CCD #87A1DB

Accessibility & contrast

On white

6.30

#355CB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.33

#355CB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355CB3

6.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355CB3	#FFFFFF	#000000	##FFFFFF
##355CB3	1.00	6.30	3.33	6.30
#FFFFFF	6.30	1.00	21.00	1.00
#000000	3.33	21.00	1.00	21.00
##FFFFFF	6.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D66B6

Deuteranopia (green-blind)

#085AB1

Tritanopia (blue-blind)

#00707F

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #355cb3;
/* rgb */ color: rgb(53, 92, 179);
/* oklch */ color: oklch(49.4% 0.145 263.8);

Tailwind

colors: {
  custom: {
    50: '#7c89ca',
    500: '#355cb3',
    950: '#000000',
  },
}

SCSS

$custom: #355cb3;
$custom-light: #7c89ca;
$custom-dark: #000000;

JSON

{
  "hex": "#355cb3",
  "rgb": {
    "r": 53,
    "g": 92,
    "b": 179
  },
  "hsl": {
    "h": 221.429,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.49414,
    "c": 0.14526,
    "h": 263.8
  },
  "luminance": 0.11666
}

Semantic roles & 50–950 ramp

primary

#355CB3

secondary

#C5AF7F

accent

#B04ADE

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #355CB3

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

Preview Lab → · Contrast checker → · Palette generator →