#223B79#223B79

#223B79 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.9% C 0.110 H 265.0°. Best body text is #FFFFFF at 10.66:1 contrast (WCAG AA passes).

Color values

HEX	#223B79
RGB	rgb(34, 59, 121)
HSL	hsl(223, 56%, 30%)
HSV	hsv(223, 72%, 47%)
CMYK	cmyk(71.9%, 51.2%, 0%, 52.5%)
CIE-LAB	lab(26.30, 13.09, -38.29)
CIE-LCH	lch(26.30, 40.47, 288.88°)
OKLab	oklab(36.92% -0.0097 -0.1098)
OKLCH	oklch(36.92% 0.11 265)
XYZ	xyz(5.6736, 4.8479, 18.7222)
Luminance	0.0485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223B79 #796022

analogous

#226679 #223B79 #352279

triadic

#223B79 #79223B #3B7922

tetradic

#223B79 #792266 #796022 #227935

square

#223B79 #792266 #796022 #227935

split-complementary

#223B79 #793522 #667922

monochromatic

#070C19 #152449 #223B79 #2F52A9 #496FCC

Accessibility & contrast

On white

10.66

#223B79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#223B79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223B79

10.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223B79	#FFFFFF	#000000	##FFFFFF
##223B79	1.00	10.66	1.97	10.66
#FFFFFF	10.66	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18427B

Deuteranopia (green-blind)

#003A78

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #223b79;
/* rgb */ color: rgb(34, 59, 121);
/* oklch */ color: oklch(36.9% 0.110 265.0);

Tailwind

colors: {
  custom: {
    50: '#6970a0',
    500: '#223b79',
    950: '#000000',
  },
}

SCSS

$custom: #223b79;
$custom-light: #6970a0;
$custom-dark: #000000;

JSON

{
  "hex": "#223b79",
  "rgb": {
    "r": 34,
    "g": 59,
    "b": 121
  },
  "hsl": {
    "h": 222.759,
    "s": 56.129,
    "l": 30.392
  },
  "oklch": {
    "l": 0.36922,
    "c": 0.11028,
    "h": 265
  },
  "luminance": 0.04848
}

Semantic roles & 50–950 ramp

primary

#223B79

secondary

#AC904B

accent

#B448DF

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #223B79

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

Preview Lab → · Contrast checker → · Palette generator →