#355AB9#355AB9

#355AB9 is a mid, vivid blue. Relative luminance 0.116; OKLCH L 49.4% C 0.156 H 265.1°. Best body text is #FFFFFF at 6.34:1 contrast (WCAG AA passes).

Color values

HEX	#355AB9
RGB	rgb(53, 90, 185)
HSL	hsl(223, 55%, 47%)
HSV	hsv(223, 71%, 73%)
CMYK	cmyk(71.4%, 51.4%, 0%, 27.5%)
CIE-LAB	lab(40.53, 19.65, -54.11)
CIE-LCH	lch(40.53, 57.57, 289.95°)
OKLab	oklab(49.43% -0.0133 -0.1555)
OKLCH	oklch(49.43% 0.156 265.1)
XYZ	xyz(13.8782, 11.5706, 47.3915)
Luminance	0.1157 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355AB9 #B99435

analogous

#359CB9 #355AB9 #5235B9

triadic

#355AB9 #B9355A #5AB935

tetradic

#355AB9 #B9359C #B99435 #35B952

square

#355AB9 #B9359C #B99435 #35B952

split-complementary

#355AB9 #B95235 #9CB935

monochromatic

#1A2C5A #274389 #355AB9 #5B7CD0 #8BA2DE

Accessibility & contrast

On white

6.34

#355AB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.31

#355AB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355AB9

6.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355AB9	#FFFFFF	#000000	##FFFFFF
##355AB9	1.00	6.34	3.31	6.34
#FFFFFF	6.34	1.00	21.00	1.00
#000000	3.31	21.00	1.00	21.00
##FFFFFF	6.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F66BC

Deuteranopia (green-blind)

#005AB7

Tritanopia (blue-blind)

#007181

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #355ab9;
/* rgb */ color: rgb(53, 90, 185);
/* oklch */ color: oklch(49.4% 0.156 265.1);

Tailwind

colors: {
  custom: {
    50: '#7d88cf',
    500: '#355ab9',
    950: '#000000',
  },
}

SCSS

$custom: #355ab9;
$custom-light: #7d88cf;
$custom-dark: #000000;

JSON

{
  "hex": "#355ab9",
  "rgb": {
    "r": 53,
    "g": 90,
    "b": 185
  },
  "hsl": {
    "h": 223.182,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.49426,
    "c": 0.15608,
    "h": 265.1
  },
  "luminance": 0.11572
}

Semantic roles & 50–950 ramp

primary

#355AB9

secondary

#C8B482

accent

#B549DF

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #355AB9

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

Preview Lab → · Contrast checker → · Palette generator →