#356DB3#356DB3

#356DB3 is a mid, vivid cyan. Relative luminance 0.149; OKLCH L 53.2% C 0.125 H 255.3°. Best body text is #FFFFFF at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#356DB3
RGB	rgb(53, 109, 179)
HSL	hsl(213, 54%, 45%)
HSV	hsv(213, 70%, 70%)
CMYK	cmyk(70.4%, 39.1%, 0%, 29.8%)
CIE-LAB	lab(45.56, 5.27, -42.54)
CIE-LCH	lch(45.56, 42.86, 277.06°)
OKLab	oklab(53.19% -0.0318 -0.1212)
OKLCH	oklch(53.19% 0.125 255.3)
XYZ	xyz(15.0705, 14.9472, 44.7299)
Luminance	0.1495 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#356DB3 #B37B35

analogous

#35ACB3 #356DB3 #3C35B3

triadic

#356DB3 #B3356D #6DB335

tetradic

#356DB3 #B335AC #B37B35 #35B33C

square

#356DB3 #B335AC #B37B35 #35B33C

split-complementary

#356DB3 #B33C35 #ACB335

monochromatic

#193355 #275084 #356DB3 #588CCD #87ADDB

Accessibility & contrast

On white

5.26

#356DB3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#356DB3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #356DB3

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##356DB3	#FFFFFF	#000000	##FFFFFF
##356DB3	1.00	5.26	3.99	5.26
#FFFFFF	5.26	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D72B6

Deuteranopia (green-blind)

#3A66B2

Tritanopia (blue-blind)

#007D87

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #356db3;
/* rgb */ color: rgb(53, 109, 179);
/* oklch */ color: oklch(53.2% 0.125 255.3);

Tailwind

colors: {
  custom: {
    50: '#7b96ca',
    500: '#356db3',
    950: '#000000',
  },
}

SCSS

$custom: #356db3;
$custom-light: #7b96ca;
$custom-dark: #000000;

JSON

{
  "hex": "#356db3",
  "rgb": {
    "r": 53,
    "g": 109,
    "b": 179
  },
  "hsl": {
    "h": 213.333,
    "s": 54.31,
    "l": 45.49
  },
  "oklch": {
    "l": 0.53185,
    "c": 0.12528,
    "h": 255.3
  },
  "luminance": 0.14949
}

Semantic roles & 50–950 ramp

primary

#356DB3

secondary

#C5A67F

accent

#9C4ADE

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #356DB3

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

Preview Lab → · Contrast checker → · Palette generator →