#355DB3#355DB3

#355DB3 is a mid, vivid blue. Relative luminance 0.118; OKLCH L 49.6% C 0.144 H 263.3°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#355DB3
RGB	rgb(53, 93, 179)
HSL	hsl(221, 54%, 45%)
HSV	hsv(221, 70%, 70%)
CMYK	cmyk(70.4%, 48%, 0%, 29.8%)
CIE-LAB	lab(40.96, 15.47, -49.90)
CIE-LCH	lch(40.96, 52.24, 287.23°)
OKLab	oklab(49.63% -0.0167 -0.1431)
OKLCH	oklch(49.63% 0.144 263.3)
XYZ	xyz(13.5164, 11.8389, 44.2119)
Luminance	0.1184 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355DB3 #B38B35

analogous

#359CB3 #355DB3 #4C35B3

triadic

#355DB3 #B3355D #5DB335

tetradic

#355DB3 #B3359C #B38B35 #35B34C

square

#355DB3 #B3359C #B38B35 #35B34C

split-complementary

#355DB3 #B34C35 #9CB335

monochromatic

#192C55 #274484 #355DB3 #587DCD #87A2DB

Accessibility & contrast

On white

6.24

#355DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#355DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355DB3

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355DB3	#FFFFFF	#000000	##FFFFFF
##355DB3	1.00	6.24	3.37	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F67B6

Deuteranopia (green-blind)

#0E5BB1

Tritanopia (blue-blind)

#00717F

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #355db3;
/* rgb */ color: rgb(53, 93, 179);
/* oklch */ color: oklch(49.6% 0.144 263.3);

Tailwind

colors: {
  custom: {
    50: '#7b8aca',
    500: '#355db3',
    950: '#000000',
  },
}

SCSS

$custom: #355db3;
$custom-light: #7b8aca;
$custom-dark: #000000;

JSON

{
  "hex": "#355db3",
  "rgb": {
    "r": 53,
    "g": 93,
    "b": 179
  },
  "hsl": {
    "h": 220.952,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.49629,
    "c": 0.14403,
    "h": 263.3
  },
  "luminance": 0.1184
}

Semantic roles & 50–950 ramp

primary

#355DB3

secondary

#C5AF7F

accent

#AF4ADE

background

#F8F8FC

surface

#EFF0F8

border

#CACBD1

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #355DB3

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

Preview Lab → · Contrast checker → · Palette generator →