#223F9B#223F9B

#223F9B is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.6% C 0.154 H 266.2°. Best body text is #FFFFFF at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#223F9B
RGB	rgb(34, 63, 155)
HSL	hsl(226, 64%, 37%)
HSV	hsv(226, 78%, 61%)
CMYK	cmyk(78.1%, 59.4%, 0%, 39.2%)
CIE-LAB	lab(30.06, 23.75, -53.24)
CIE-LCH	lch(30.06, 58.30, 294.04°)
OKLab	oklab(40.59% -0.0103 -0.1537)
OKLCH	oklch(40.59% 0.154 266.2)
XYZ	xyz(8.3515, 6.2607, 31.7723)
Luminance	0.0626 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223F9B #9B7E22

analogous

#227C9B #223F9B #42229B

triadic

#223F9B #9B223F #3F9B22

tetradic

#223F9B #9B227C #9B7E22 #229B42

square

#223F9B #9B227C #9B7E22 #229B42

split-complementary

#223F9B #9B4222 #7C9B22

monochromatic

#0C1637 #172B69 #223F9B #2D53CD #5C7BDB

Accessibility & contrast

On white

9.32

#223F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#223F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223F9B

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223F9B	#FFFFFF	#000000	##FFFFFF
##223F9B	1.00	9.32	2.25	9.32
#FFFFFF	9.32	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9E

Deuteranopia (green-blind)

#004199

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #223f9b;
/* rgb */ color: rgb(34, 63, 155);
/* oklch */ color: oklch(40.6% 0.154 266.2);

Tailwind

colors: {
  custom: {
    50: '#7173b9',
    500: '#223f9b',
    950: '#000000',
  },
}

SCSS

$custom: #223f9b;
$custom-light: #7173b9;
$custom-dark: #000000;

JSON

{
  "hex": "#223f9b",
  "rgb": {
    "r": 34,
    "g": 63,
    "b": 155
  },
  "hsl": {
    "h": 225.62,
    "s": 64.021,
    "l": 37.059
  },
  "oklch": {
    "l": 0.40594,
    "c": 0.15409,
    "h": 266.2
  },
  "luminance": 0.06262
}

Semantic roles & 50–950 ramp

primary

#223F9B

secondary

#C0A759

accent

#BF41E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #223F9B

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

Preview Lab → · Contrast checker → · Palette generator →