#223D99#223D99

#223D99 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.0% C 0.154 H 266.7°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#223D99
RGB	rgb(34, 61, 153)
HSL	hsl(226, 64%, 37%)
HSV	hsv(226, 78%, 60%)
CMYK	cmyk(77.8%, 60.1%, 0%, 40%)
CIE-LAB	lab(29.35, 24.33, -53.18)
CIE-LCH	lch(29.35, 58.48, 294.58°)
OKLab	oklab(40.01% -0.0089 -0.1536)
OKLCH	oklch(40.01% 0.154 266.7)
XYZ	xyz(8.0762, 5.9766, 30.8588)
Luminance	0.0598 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223D99 #997E22

analogous

#227999 #223D99 #432299

triadic

#223D99 #99223D #3D9922

tetradic

#223D99 #992279 #997E22 #229943

square

#223D99 #992279 #997E22 #229943

split-complementary

#223D99 #994322 #799922

monochromatic

#0C1535 #172967 #223D99 #2D51CB #5B78DB

Accessibility & contrast

On white

9.57

#223D99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#223D99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223D99

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223D99	#FFFFFF	#000000	##FFFFFF
##223D99	1.00	9.57	2.20	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9C

Deuteranopia (green-blind)

#004097

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #223d99;
/* rgb */ color: rgb(34, 61, 153);
/* oklch */ color: oklch(40.0% 0.154 266.7);

Tailwind

colors: {
  custom: {
    50: '#7072b8',
    500: '#223d99',
    950: '#000000',
  },
}

SCSS

$custom: #223d99;
$custom-light: #7072b8;
$custom-dark: #000000;

JSON

{
  "hex": "#223d99",
  "rgb": {
    "r": 34,
    "g": 61,
    "b": 153
  },
  "hsl": {
    "h": 226.387,
    "s": 63.636,
    "l": 36.667
  },
  "oklch": {
    "l": 0.40013,
    "c": 0.15385,
    "h": 266.7
  },
  "luminance": 0.05977
}

Semantic roles & 50–950 ramp

primary

#223D99

secondary

#BFA858

accent

#C141E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #223D99

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

Preview Lab → · Contrast checker → · Palette generator →