#355EA5#355EA5

#355EA5 is a mid, vivid blue. Relative luminance 0.115; OKLCH L 48.9% C 0.123 H 260.6°. Best body text is #FFFFFF at 6.37:1 contrast (WCAG AA passes).

Color values

HEX	#355EA5
RGB	rgb(53, 94, 165)
HSL	hsl(218, 51%, 43%)
HSV	hsv(218, 68%, 65%)
CMYK	cmyk(67.9%, 43%, 0%, 35.3%)
CIE-LAB	lab(40.37, 9.64, -42.57)
CIE-LCH	lch(40.37, 43.65, 282.76°)
OKLab	oklab(48.9% -0.0201 -0.1215)
OKLCH	oklch(48.9% 0.123 260.6)
XYZ	xyz(12.2600, 11.4777, 37.1593)
Luminance	0.1148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355EA5 #A57C35

analogous

#3596A5 #355EA5 #4435A5

triadic

#355EA5 #A5355E #5EA535

tetradic

#355EA5 #A53596 #A57C35 #35A544

square

#355EA5 #A53596 #A57C35 #35A544

split-complementary

#355EA5 #A54435 #96A535

monochromatic

#172948 #264477 #355EA5 #507CC7 #7F9FD6

Accessibility & contrast

On white

6.37

#355EA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.30

#355EA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355EA5

6.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355EA5	#FFFFFF	#000000	##FFFFFF
##355EA5	1.00	6.37	3.30	6.37
#FFFFFF	6.37	1.00	21.00	1.00
#000000	3.30	21.00	1.00	21.00
##FFFFFF	6.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D65A8

Deuteranopia (green-blind)

#2A5AA4

Tritanopia (blue-blind)

#006E79

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #355ea5;
/* rgb */ color: rgb(53, 94, 165);
/* oklch */ color: oklch(48.9% 0.123 260.6);

Tailwind

colors: {
  custom: {
    50: '#798bc0',
    500: '#355ea5',
    950: '#000000',
  },
}

SCSS

$custom: #355ea5;
$custom-light: #798bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#355ea5",
  "rgb": {
    "r": 53,
    "g": 94,
    "b": 165
  },
  "hsl": {
    "h": 218.036,
    "s": 51.376,
    "l": 42.745
  },
  "oklch": {
    "l": 0.48898,
    "c": 0.12315,
    "h": 260.6
  },
  "luminance": 0.11479
}

Semantic roles & 50–950 ramp

primary

#355EA5

secondary

#BFA577

accent

#A74DDB

background

#F7F8FB

surface

#EEF0F7

border

#C9CBD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #355EA5

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

Preview Lab → · Contrast checker → · Palette generator →