#355AAB#355AAB

#355AAB is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.4% C 0.137 H 263.6°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#355AAB
RGB	rgb(53, 90, 171)
HSL	hsl(221, 53%, 44%)
HSV	hsv(221, 69%, 67%)
CMYK	cmyk(69%, 47.4%, 0%, 32.9%)
CIE-LAB	lab(39.59, 14.45, -47.37)
CIE-LCH	lch(39.59, 49.53, 286.97°)
OKLab	oklab(48.42% -0.0151 -0.1357)
OKLCH	oklch(48.42% 0.137 263.6)
XYZ	xyz(12.4725, 11.0082, 39.9877)
Luminance	0.1101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355AAB #AB8635

analogous

#3595AB #355AAB #4B35AB

triadic

#355AAB #AB355A #5AAB35

tetradic

#355AAB #AB3595 #AB8635 #35AB4B

square

#355AAB #AB3595 #AB8635 #35AB4B

split-complementary

#355AAB #AB4B35 #95AB35

monochromatic

#18294E #27417C #355AAB #5379CA #829DD8

Accessibility & contrast

On white

6.56

#355AAB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#355AAB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355AAB

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355AAB	#FFFFFF	#000000	##FFFFFF
##355AAB	1.00	6.56	3.20	6.56
#FFFFFF	6.56	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3063AE

Deuteranopia (green-blind)

#1658A9

Tritanopia (blue-blind)

#006D7A

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #355aab;
/* rgb */ color: rgb(53, 90, 171);
/* oklch */ color: oklch(48.4% 0.137 263.6);

Tailwind

colors: {
  custom: {
    50: '#7a88c4',
    500: '#355aab',
    950: '#000000',
  },
}

SCSS

$custom: #355aab;
$custom-light: #7a88c4;
$custom-dark: #000000;

JSON

{
  "hex": "#355aab",
  "rgb": {
    "r": 53,
    "g": 90,
    "b": 171
  },
  "hsl": {
    "h": 221.186,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.48418,
    "c": 0.13652,
    "h": 263.6
  },
  "luminance": 0.11009
}

Semantic roles & 50–950 ramp

primary

#355AAB

secondary

#C2AB7A

accent

#AF4CDC

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #355AAB

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

Preview Lab → · Contrast checker → · Palette generator →