#223FA8#223FA8

#223FA8 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 41.8% C 0.172 H 266.6°. Best body text is #FFFFFF at 8.96:1 contrast (WCAG AA passes).

Color values

HEX	#223FA8
RGB	rgb(34, 63, 168)
HSL	hsl(227, 66%, 40%)
HSV	hsv(227, 80%, 66%)
CMYK	cmyk(79.8%, 62.5%, 0%, 34.1%)
CIE-LAB	lab(31.16, 28.77, -59.29)
CIE-LCH	lch(31.16, 65.90, 295.89°)
OKLab	oklab(41.76% -0.0101 -0.1715)
OKLCH	oklch(41.76% 0.172 266.6)
XYZ	xyz(9.5026, 6.7211, 37.8347)
Luminance	0.0672 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223FA8 #A88B22

analogous

#2282A8 #223FA8 #4822A8

triadic

#223FA8 #A8223F #3FA822

tetradic

#223FA8 #A82282 #A88B22 #22A848

square

#223FA8 #A82282 #A88B22 #22A848

split-complementary

#223FA8 #A84822 #82A822

monochromatic

#0D1942 #182C75 #223FA8 #3255D5 #657FE0

Accessibility & contrast

On white

8.96

#223FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.34

#223FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223FA8

8.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223FA8	#FFFFFF	#000000	##FFFFFF
##223FA8	1.00	8.96	2.34	8.96
#FFFFFF	8.96	1.00	21.00	1.00
#000000	2.34	21.00	1.00	21.00
##FFFFFF	8.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050AB

Deuteranopia (green-blind)

#0043A6

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #223fa8;
/* rgb */ color: rgb(34, 63, 168);
/* oklch */ color: oklch(41.8% 0.172 266.6);

Tailwind

colors: {
  custom: {
    50: '#7473c3',
    500: '#223fa8',
    950: '#000000',
  },
}

SCSS

$custom: #223fa8;
$custom-light: #7473c3;
$custom-dark: #000000;

JSON

{
  "hex": "#223fa8",
  "rgb": {
    "r": 34,
    "g": 63,
    "b": 168
  },
  "hsl": {
    "h": 227.015,
    "s": 66.337,
    "l": 39.608
  },
  "oklch": {
    "l": 0.41757,
    "c": 0.1718,
    "h": 266.6
  },
  "luminance": 0.06722
}

Semantic roles & 50–950 ramp

primary

#223FA8

secondary

#C5AF61

accent

#C43FE9

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #223FA8

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

Preview Lab → · Contrast checker → · Palette generator →