#355EB8#355EB8

#355EB8 is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.2% C 0.150 H 263.5°. Best body text is #FFFFFF at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#355EB8
RGB	rgb(53, 94, 184)
HSL	hsl(221, 55%, 46%)
HSV	hsv(221, 71%, 72%)
CMYK	cmyk(71.2%, 48.9%, 0%, 27.8%)
CIE-LAB	lab(41.57, 16.68, -51.85)
CIE-LCH	lch(41.57, 54.46, 287.83°)
OKLab	oklab(50.2% -0.0169 -0.1488)
OKLCH	oklch(50.2% 0.15 263.5)
XYZ	xyz(14.1196, 12.2215, 46.9530)
Luminance	0.1222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355EB8 #B88F35

analogous

#35A0B8 #355EB8 #4E35B8

triadic

#355EB8 #B8355E #5EB835

tetradic

#355EB8 #B835A0 #B88F35 #35B84E

square

#355EB8 #B835A0 #B88F35 #35B84E

split-complementary

#355EB8 #B84E35 #A0B835

monochromatic

#1A2D59 #274688 #355EB8 #5B7FD0 #8AA4DD

Accessibility & contrast

On white

6.10

#355EB8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.44

#355EB8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355EB8

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355EB8	#FFFFFF	#000000	##FFFFFF
##355EB8	1.00	6.10	3.44	6.10
#FFFFFF	6.10	1.00	21.00	1.00
#000000	3.44	21.00	1.00	21.00
##FFFFFF	6.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C68BB

Deuteranopia (green-blind)

#005CB6

Tritanopia (blue-blind)

#007382

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #355eb8;
/* rgb */ color: rgb(53, 94, 184);
/* oklch */ color: oklch(50.2% 0.150 263.5);

Tailwind

colors: {
  custom: {
    50: '#7c8bce',
    500: '#355eb8',
    950: '#000000',
  },
}

SCSS

$custom: #355eb8;
$custom-light: #7c8bce;
$custom-dark: #000000;

JSON

{
  "hex": "#355eb8",
  "rgb": {
    "r": 53,
    "g": 94,
    "b": 184
  },
  "hsl": {
    "h": 221.221,
    "s": 55.274,
    "l": 46.471
  },
  "oklch": {
    "l": 0.50198,
    "c": 0.14975,
    "h": 263.5
  },
  "luminance": 0.12223
}

Semantic roles & 50–950 ramp

primary

#355EB8

secondary

#C7B281

accent

#B049DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #355EB8

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

Preview Lab → · Contrast checker → · Palette generator →