#223FA3#223FA3

#223FA3 is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.3% C 0.165 H 266.5°. Best body text is #FFFFFF at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#223FA3
RGB	rgb(34, 63, 163)
HSL	hsl(227, 65%, 39%)
HSV	hsv(227, 79%, 64%)
CMYK	cmyk(79.1%, 61.3%, 0%, 36.1%)
CIE-LAB	lab(30.73, 26.85, -56.99)
CIE-LCH	lch(30.73, 63.00, 295.23°)
OKLab	oklab(41.3% -0.0101 -0.1647)
OKLCH	oklch(41.3% 0.165 266.5)
XYZ	xyz(9.0457, 6.5384, 35.4285)
Luminance	0.0654 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223FA3 #A38622

analogous

#227FA3 #223FA3 #4622A3

triadic

#223FA3 #A3223F #3FA322

tetradic

#223FA3 #A3227F #A38622 #22A346

square

#223FA3 #A3227F #A38622 #22A346

split-complementary

#223FA3 #A34622 #7FA322

monochromatic

#0D183E #172B70 #223FA3 #2F54D4 #617DDE

Accessibility & contrast

On white

9.10

#223FA3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#223FA3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223FA3

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223FA3	#FFFFFF	#000000	##FFFFFF
##223FA3	1.00	9.10	2.31	9.10
#FFFFFF	9.10	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FA6

Deuteranopia (green-blind)

#0042A1

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #223fa3;
/* rgb */ color: rgb(34, 63, 163);
/* oklch */ color: oklch(41.3% 0.165 266.5);

Tailwind

colors: {
  custom: {
    50: '#7373bf',
    500: '#223fa3',
    950: '#000000',
  },
}

SCSS

$custom: #223fa3;
$custom-light: #7373bf;
$custom-dark: #000000;

JSON

{
  "hex": "#223fa3",
  "rgb": {
    "r": 34,
    "g": 63,
    "b": 163
  },
  "hsl": {
    "h": 226.512,
    "s": 65.482,
    "l": 38.627
  },
  "oklch": {
    "l": 0.41303,
    "c": 0.16506,
    "h": 266.5
  },
  "luminance": 0.06539
}

Semantic roles & 50–950 ramp

primary

#223FA3

secondary

#C3AC5E

accent

#C23FE8

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #223FA3

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

Preview Lab → · Contrast checker → · Palette generator →