#355EB9#355EB9

#355EB9 is a mid, vivid blue. Relative luminance 0.123; OKLCH L 50.3% C 0.151 H 263.6°. Best body text is #FFFFFF at 6.08:1 contrast (WCAG AA passes).

Color values

HEX	#355EB9
RGB	rgb(53, 94, 185)
HSL	hsl(221, 55%, 47%)
HSV	hsv(221, 71%, 73%)
CMYK	cmyk(71.4%, 49.2%, 0%, 27.5%)
CIE-LAB	lab(41.63, 17.05, -52.33)
CIE-LCH	lch(41.63, 55.03, 288.05°)
OKLab	oklab(50.27% -0.0167 -0.1502)
OKLCH	oklch(50.27% 0.151 263.6)
XYZ	xyz(14.2248, 12.2636, 47.5070)
Luminance	0.1226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355EB9 #B99035

analogous

#35A0B9 #355EB9 #4E35B9

triadic

#355EB9 #B9355E #5EB935

tetradic

#355EB9 #B935A0 #B99035 #35B94E

square

#355EB9 #B935A0 #B99035 #35B94E

split-complementary

#355EB9 #B94E35 #A0B935

monochromatic

#1A2E5A #274689 #355EB9 #5B7FD0 #8BA4DE

Accessibility & contrast

On white

6.08

#355EB9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.45

#355EB9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355EB9

6.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355EB9	#FFFFFF	#000000	##FFFFFF
##355EB9	1.00	6.08	3.45	6.08
#FFFFFF	6.08	1.00	21.00	1.00
#000000	3.45	21.00	1.00	21.00
##FFFFFF	6.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B69BC

Deuteranopia (green-blind)

#005DB7

Tritanopia (blue-blind)

#007382

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #355eb9;
/* rgb */ color: rgb(53, 94, 185);
/* oklch */ color: oklch(50.3% 0.151 263.6);

Tailwind

colors: {
  custom: {
    50: '#7d8bcf',
    500: '#355eb9',
    950: '#000000',
  },
}

SCSS

$custom: #355eb9;
$custom-light: #7d8bcf;
$custom-dark: #000000;

JSON

{
  "hex": "#355eb9",
  "rgb": {
    "r": 53,
    "g": 94,
    "b": 185
  },
  "hsl": {
    "h": 221.364,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.5027,
    "c": 0.15112,
    "h": 263.6
  },
  "luminance": 0.12265
}

Semantic roles & 50–950 ramp

primary

#355EB9

secondary

#C8B282

accent

#B049DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #355EB9

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

Preview Lab → · Contrast checker → · Palette generator →