#355BCB#355BCB

#355BCB is a mid, vivid blue. Relative luminance 0.126; OKLCH L 51.0% C 0.179 H 266.0°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#355BCB
RGB	rgb(53, 91, 203)
HSL	hsl(225, 59%, 50%)
HSV	hsv(225, 74%, 80%)
CMYK	cmyk(73.9%, 55.2%, 0%, 20.4%)
CIE-LAB	lab(42.08, 25.66, -62.06)
CIE-LCH	lch(42.08, 67.16, 292.47°)
OKLab	oklab(51.01% -0.0125 -0.1789)
OKLCH	oklch(51.01% 0.179 266)
XYZ	xyz(15.9850, 12.5491, 58.0681)
Luminance	0.1255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#355BCB #CBA535

analogous

#35A6CB #355BCB #5A35CB

triadic

#355BCB #CB355B #5BCB35

tetradic

#355BCB #CB35A6 #CBA535 #35CB5A

square

#355BCB #CB35A6 #CBA535 #35CB5A

split-complementary

#355BCB #CB5A35 #A6CB35

monochromatic

#1B2F6A #28459B #355BCB #6683D8 #96AAE4

Accessibility & contrast

On white

5.98

#355BCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#355BCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #355BCB

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##355BCB	#FFFFFF	#000000	##FFFFFF
##355BCB	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006BCF

Deuteranopia (green-blind)

#005DC9

Tritanopia (blue-blind)

#00768A

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #355bcb;
/* rgb */ color: rgb(53, 91, 203);
/* oklch */ color: oklch(51.0% 0.179 266.0);

Tailwind

colors: {
  custom: {
    50: '#8188dc',
    500: '#355bcb',
    950: '#000000',
  },
}

SCSS

$custom: #355bcb;
$custom-light: #8188dc;
$custom-dark: #000000;

JSON

{
  "hex": "#355bcb",
  "rgb": {
    "r": 53,
    "g": 91,
    "b": 203
  },
  "hsl": {
    "h": 224.8,
    "s": 59.055,
    "l": 50.196
  },
  "oklch": {
    "l": 0.51006,
    "c": 0.17932,
    "h": 266
  },
  "luminance": 0.12551
}

Semantic roles & 50–950 ramp

primary

#355BCB

secondary

#CFBE8C

accent

#BB46E2

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #355BCB

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

Preview Lab → · Contrast checker → · Palette generator →