#355EA4#355EA4

#355EA4 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 48.8% C 0.122 H 260.4°. Best body text is #FFFFFF at 6.39:1 contrast (WCAG AA passes).

Color values

HEX	#355EA4
RGB	rgb(53, 94, 164)
HSL	hsl(218, 51%, 43%)
HSV	hsv(218, 68%, 64%)
CMYK	cmyk(67.7%, 42.7%, 0%, 35.7%)
CIE-LAB	lab(40.31, 9.27, -42.07)
CIE-LCH	lch(40.31, 43.08, 282.43°)
OKLab	oklab(48.83% -0.0203 -0.12)
OKLCH	oklch(48.83% 0.122 260.4)
XYZ	xyz(12.1694, 11.4414, 36.6818)
Luminance	0.1144 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355EA4 #A47B35

analogous

#3595A4 #355EA4 #4435A4

triadic

#355EA4 #A4355E #5EA435

tetradic

#355EA4 #A43595 #A47B35 #35A444

square

#355EA4 #A43595 #A47B35 #35A444

split-complementary

#355EA4 #A44435 #95A435

monochromatic

#172947 #264376 #355EA4 #507CC6 #7E9ED5

Accessibility & contrast

On white

6.39

#355EA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.29

#355EA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355EA4

6.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355EA4	#FFFFFF	#000000	##FFFFFF
##355EA4	1.00	6.39	3.29	6.39
#FFFFFF	6.39	1.00	21.00	1.00
#000000	3.29	21.00	1.00	21.00
##FFFFFF	6.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D65A7

Deuteranopia (green-blind)

#2C5AA3

Tritanopia (blue-blind)

#006E79

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #355ea4;
/* rgb */ color: rgb(53, 94, 164);
/* oklch */ color: oklch(48.8% 0.122 260.4);

Tailwind

colors: {
  custom: {
    50: '#798bbf',
    500: '#355ea4',
    950: '#000000',
  },
}

SCSS

$custom: #355ea4;
$custom-light: #798bbf;
$custom-dark: #000000;

JSON

{
  "hex": "#355ea4",
  "rgb": {
    "r": 53,
    "g": 94,
    "b": 164
  },
  "hsl": {
    "h": 217.838,
    "s": 51.152,
    "l": 42.549
  },
  "oklch": {
    "l": 0.48833,
    "c": 0.12175,
    "h": 260.4
  },
  "luminance": 0.11443
}

Semantic roles & 50–950 ramp

primary

#355EA4

secondary

#BEA476

accent

#A64DDB

background

#F7F8FB

surface

#EEF0F7

border

#C9CBD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #355EA4

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

Preview Lab → · Contrast checker → · Palette generator →