#223FA4#223FA4

#223FA4 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.4% C 0.166 H 266.5°. Best body text is #FFFFFF at 9.07:1 contrast (WCAG AA passes).

Color values

HEX	#223FA4
RGB	rgb(34, 63, 164)
HSL	hsl(227, 66%, 39%)
HSV	hsv(227, 79%, 64%)
CMYK	cmyk(79.3%, 61.6%, 0%, 35.7%)
CIE-LAB	lab(30.82, 27.24, -57.45)
CIE-LCH	lch(30.82, 63.58, 295.36°)
OKLab	oklab(41.39% -0.0101 -0.1661)
OKLCH	oklch(41.39% 0.166 266.5)
XYZ	xyz(9.1357, 6.5744, 35.9023)
Luminance	0.0658 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223FA4 #A48722

analogous

#2280A4 #223FA4 #4622A4

triadic

#223FA4 #A4223F #3FA422

tetradic

#223FA4 #A42280 #A48722 #22A446

square

#223FA4 #A42280 #A48722 #22A446

split-complementary

#223FA4 #A44622 #80A422

monochromatic

#0D183F #172C71 #223FA4 #2F54D4 #627EDE

Accessibility & contrast

On white

9.07

#223FA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#223FA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223FA4

9.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223FA4	#FFFFFF	#000000	##FFFFFF
##223FA4	1.00	9.07	2.32	9.07
#FFFFFF	9.07	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA7

Deuteranopia (green-blind)

#0043A2

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #223fa4;
/* rgb */ color: rgb(34, 63, 164);
/* oklch */ color: oklch(41.4% 0.166 266.5);

Tailwind

colors: {
  custom: {
    50: '#7373c0',
    500: '#223fa4',
    950: '#000000',
  },
}

SCSS

$custom: #223fa4;
$custom-light: #7373c0;
$custom-dark: #000000;

JSON

{
  "hex": "#223fa4",
  "rgb": {
    "r": 34,
    "g": 63,
    "b": 164
  },
  "hsl": {
    "h": 226.615,
    "s": 65.657,
    "l": 38.824
  },
  "oklch": {
    "l": 0.41394,
    "c": 0.16642,
    "h": 266.5
  },
  "luminance": 0.06575
}

Semantic roles & 50–950 ramp

primary

#223FA4

secondary

#C4AD5E

accent

#C33FE9

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #223FA4

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

Preview Lab → · Contrast checker → · Palette generator →