#223B99#223B99

#223B99 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.6% C 0.156 H 267.2°. Best body text is #FFFFFF at 9.75:1 contrast (WCAG AA passes).

Color values

HEX	#223B99
RGB	rgb(34, 59, 153)
HSL	hsl(227, 64%, 37%)
HSV	hsv(227, 78%, 60%)
CMYK	cmyk(77.8%, 61.4%, 0%, 40%)
CIE-LAB	lab(28.82, 25.69, -54.05)
CIE-LCH	lch(28.82, 59.84, 295.42°)
OKLab	oklab(39.61% -0.0075 -0.1562)
OKLCH	oklch(39.61% 0.156 267.2)
XYZ	xyz(7.9714, 5.7670, 30.8238)
Luminance	0.0577 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223B99 #998022

analogous

#227799 #223B99 #452299

triadic

#223B99 #99223B #3B9922

tetradic

#223B99 #992277 #998022 #229945

square

#223B99 #992277 #998022 #229945

split-complementary

#223B99 #994522 #779922

monochromatic

#0C1435 #172867 #223B99 #2D4ECB #5B76DB

Accessibility & contrast

On white

9.75

#223B99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#223B99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223B99

9.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223B99	#FFFFFF	#000000	##FFFFFF
##223B99	1.00	9.75	2.15	9.75
#FFFFFF	9.75	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9C

Deuteranopia (green-blind)

#003F97

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #223b99;
/* rgb */ color: rgb(34, 59, 153);
/* oklch */ color: oklch(39.6% 0.156 267.2);

Tailwind

colors: {
  custom: {
    50: '#7070b8',
    500: '#223b99',
    950: '#000000',
  },
}

SCSS

$custom: #223b99;
$custom-light: #7070b8;
$custom-dark: #000000;

JSON

{
  "hex": "#223b99",
  "rgb": {
    "r": 34,
    "g": 59,
    "b": 153
  },
  "hsl": {
    "h": 227.395,
    "s": 63.636,
    "l": 36.667
  },
  "oklch": {
    "l": 0.39613,
    "c": 0.15637,
    "h": 267.2
  },
  "luminance": 0.05768
}

Semantic roles & 50–950 ramp

primary

#223B99

secondary

#BFA958

accent

#C441E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #223B99

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

Preview Lab → · Contrast checker → · Palette generator →