#355B99#355B99

#355B99 is a mid, moderate blue. Relative luminance 0.105; OKLCH L 47.4% C 0.110 H 259.7°. Best body text is #FFFFFF at 6.76:1 contrast (WCAG AA passes).

Color values

HEX	#355B99
RGB	rgb(53, 91, 153)
HSL	hsl(217, 49%, 40%)
HSV	hsv(217, 65%, 60%)
CMYK	cmyk(65.4%, 40.5%, 0%, 40%)
CIE-LAB	lab(38.79, 7.18, -37.93)
CIE-LCH	lch(38.79, 38.60, 280.71°)
OKLab	oklab(47.45% -0.0196 -0.1079)
OKLCH	oklch(47.45% 0.11 259.7)
XYZ	xyz(10.9570, 10.5379, 31.5874)
Luminance	0.1054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355B99 #997335

analogous

#358D99 #355B99 #413599

triadic

#355B99 #99355B #5B9935

tetradic

#355B99 #99358D #997335 #359941

square

#355B99 #99358D #997335 #359941

split-complementary

#355B99 #994135 #8D9935

monochromatic

#16253E #25406C #355B99 #4B77C1 #789AD0

Accessibility & contrast

On white

6.76

#355B99 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#355B99 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355B99

6.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355B99	#FFFFFF	#000000	##FFFFFF
##355B99	1.00	6.76	3.11	6.76
#FFFFFF	6.76	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F609B

Deuteranopia (green-blind)

#315798

Tritanopia (blue-blind)

#006972

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #355b99;
/* rgb */ color: rgb(53, 91, 153);
/* oklch */ color: oklch(47.4% 0.110 259.7);

Tailwind

colors: {
  custom: {
    50: '#7789b7',
    500: '#355b99',
    950: '#000000',
  },
}

SCSS

$custom: #355b99;
$custom-light: #7789b7;
$custom-dark: #000000;

JSON

{
  "hex": "#355b99",
  "rgb": {
    "r": 53,
    "g": 91,
    "b": 153
  },
  "hsl": {
    "h": 217.2,
    "s": 48.544,
    "l": 40.392
  },
  "oklch": {
    "l": 0.47445,
    "c": 0.1097,
    "h": 259.7
  },
  "luminance": 0.10539
}

Semantic roles & 50–950 ramp

primary

#355B99

secondary

#B99E71

accent

#A450D8

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#090B11

muted

#7B7C80

Preview Lab

Preview with #355B99

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

Preview Lab → · Contrast checker → · Palette generator →