#356FCB#356FCB

#356FCB is a mid, vivid blue. Relative luminance 0.164; OKLCH L 55.2% C 0.155 H 259.3°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#356FCB
RGB	rgb(53, 111, 203)
HSL	hsl(217, 59%, 50%)
HSV	hsv(217, 74%, 80%)
CMYK	cmyk(73.9%, 45.3%, 0%, 20.4%)
CIE-LAB	lab(47.54, 12.87, -53.24)
CIE-LCH	lch(47.54, 54.77, 283.59°)
OKLab	oklab(55.17% -0.0287 -0.1526)
OKLCH	oklch(55.17% 0.155 259.3)
XYZ	xyz(17.9282, 16.4356, 58.7158)
Luminance	0.1644 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#356FCB #CB9135

analogous

#35BACB #356FCB #4635CB

triadic

#356FCB #CB356F #6FCB35

tetradic

#356FCB #CB35BA #CB9135 #35CB46

square

#356FCB #CB35BA #CB9135 #35CB46

split-complementary

#356FCB #CB4635 #BACB35

monochromatic

#1B3A6A #28549B #356FCB #6692D8 #96B4E4

Accessibility & contrast

On white

4.90

#356FCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#356FCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #356FCB

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##356FCB	#FFFFFF	#000000	##FFFFFF
##356FCB	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F78CE

Deuteranopia (green-blind)

#1F6AC9

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #356fcb;
/* rgb */ color: rgb(53, 111, 203);
/* oklch */ color: oklch(55.2% 0.155 259.3);

Tailwind

colors: {
  custom: {
    50: '#8097db',
    500: '#356fcb',
    950: '#000000',
  },
}

SCSS

$custom: #356fcb;
$custom-light: #8097db;
$custom-dark: #000000;

JSON

{
  "hex": "#356fcb",
  "rgb": {
    "r": 53,
    "g": 111,
    "b": 203
  },
  "hsl": {
    "h": 216.8,
    "s": 59.055,
    "l": 50.196
  },
  "oklch": {
    "l": 0.55173,
    "c": 0.15525,
    "h": 259.3
  },
  "luminance": 0.16438
}

Semantic roles & 50–950 ramp

primary

#356FCB

secondary

#CFB58C

accent

#A646E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #356FCB

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

Preview Lab → · Contrast checker → · Palette generator →