#355EA3#355EA3

#355EA3 is a mid, vivid blue. Relative luminance 0.114; OKLCH L 48.8% C 0.120 H 260.2°. Best body text is #FFFFFF at 6.40:1 contrast (WCAG AA passes).

Color values

HEX	#355EA3
RGB	rgb(53, 94, 163)
HSL	hsl(218, 51%, 42%)
HSV	hsv(218, 67%, 64%)
CMYK	cmyk(67.5%, 42.3%, 0%, 36.1%)
CIE-LAB	lab(40.26, 8.91, -41.57)
CIE-LCH	lch(40.26, 42.51, 282.09°)
OKLab	oklab(48.77% -0.0205 -0.1186)
OKLCH	oklch(48.77% 0.12 260.2)
XYZ	xyz(12.0794, 11.4054, 36.2081)
Luminance	0.1141 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355EA3 #A37A35

analogous

#3595A3 #355EA3 #4335A3

triadic

#355EA3 #A3355E #5EA335

tetradic

#355EA3 #A33595 #A37A35 #35A343

square

#355EA3 #A33595 #A37A35 #35A343

split-complementary

#355EA3 #A34335 #95A335

monochromatic

#172947 #264375 #355EA3 #4F7CC6 #7E9ED5

Accessibility & contrast

On white

6.40

#355EA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.28

#355EA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355EA3

6.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355EA3	#FFFFFF	#000000	##FFFFFF
##355EA3	1.00	6.40	3.28	6.40
#FFFFFF	6.40	1.00	21.00	1.00
#000000	3.28	21.00	1.00	21.00
##FFFFFF	6.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E64A6

Deuteranopia (green-blind)

#2D5AA2

Tritanopia (blue-blind)

#006E78

Achromatopsia (no color)

#5F5F5F

Design tokens & code

CSS

--color: #355ea3;
/* rgb */ color: rgb(53, 94, 163);
/* oklch */ color: oklch(48.8% 0.120 260.2);

Tailwind

colors: {
  custom: {
    50: '#788bbf',
    500: '#355ea3',
    950: '#000000',
  },
}

SCSS

$custom: #355ea3;
$custom-light: #788bbf;
$custom-dark: #000000;

JSON

{
  "hex": "#355ea3",
  "rgb": {
    "r": 53,
    "g": 94,
    "b": 163
  },
  "hsl": {
    "h": 217.636,
    "s": 50.926,
    "l": 42.353
  },
  "oklch": {
    "l": 0.48768,
    "c": 0.12033,
    "h": 260.2
  },
  "luminance": 0.11407
}

Semantic roles & 50–950 ramp

primary

#355EA3

secondary

#BEA376

accent

#A64DDA

background

#F7F8FB

surface

#EEF0F7

border

#C9CBD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #355EA3

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

Preview Lab → · Contrast checker → · Palette generator →