#223B8F#223B8F

#223B8F is a dark, vivid blue. Relative luminance 0.055; OKLCH L 38.7% C 0.142 H 266.9°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#223B8F
RGB	rgb(34, 59, 143)
HSL	hsl(226, 62%, 35%)
HSV	hsv(226, 76%, 56%)
CMYK	cmyk(76.2%, 58.7%, 0%, 43.9%)
CIE-LAB	lab(27.98, 21.79, -49.28)
CIE-LCH	lch(27.98, 53.88, 293.85°)
OKLab	oklab(38.73% -0.0078 -0.1422)
OKLCH	oklch(38.73% 0.142 266.9)
XYZ	xyz(7.1798, 5.4504, 26.6549)
Luminance	0.0545 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223B8F #8F7622

analogous

#22718F #223B8F #40228F

triadic

#223B8F #8F223B #3B8F22

tetradic

#223B8F #8F2271 #8F7622 #228F40

square

#223B8F #8F2271 #8F7622 #228F40

split-complementary

#223B8F #8F4022 #718F22

monochromatic

#0A122C #16275E #223B8F #2E4FC0 #5573D7

Accessibility & contrast

On white

10.05

#223B8F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#223B8F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223B8F

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223B8F	#FFFFFF	#000000	##FFFFFF
##223B8F	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004792

Deuteranopia (green-blind)

#003D8D

Tritanopia (blue-blind)

#00505F

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #223b8f;
/* rgb */ color: rgb(34, 59, 143);
/* oklch */ color: oklch(38.7% 0.142 266.9);

Tailwind

colors: {
  custom: {
    50: '#6e70b0',
    500: '#223b8f',
    950: '#000000',
  },
}

SCSS

$custom: #223b8f;
$custom-light: #6e70b0;
$custom-dark: #000000;

JSON

{
  "hex": "#223b8f",
  "rgb": {
    "r": 34,
    "g": 59,
    "b": 143
  },
  "hsl": {
    "h": 226.239,
    "s": 61.582,
    "l": 34.706
  },
  "oklch": {
    "l": 0.38729,
    "c": 0.1424,
    "h": 266.9
  },
  "luminance": 0.05451
}

Semantic roles & 50–950 ramp

primary

#223B8F

secondary

#BAA352

accent

#C043E5

background

#F7F6FA

surface

#EDECF5

border

#C8C7CF

text

#080711

muted

#7B7A80

Preview Lab

Preview with #223B8F

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

Preview Lab → · Contrast checker → · Palette generator →