#223B9B#223B9B

#223B9B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.8% C 0.159 H 267.3°. Best body text is #FFFFFF at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#223B9B
RGB	rgb(34, 59, 155)
HSL	hsl(228, 64%, 37%)
HSV	hsv(228, 78%, 61%)
CMYK	cmyk(78.1%, 61.9%, 0%, 39.2%)
CIE-LAB	lab(28.99, 26.46, -54.99)
CIE-LCH	lch(28.99, 61.02, 295.69°)
OKLab	oklab(39.8% -0.0075 -0.1589)
OKLCH	oklch(39.8% 0.159 267.3)
XYZ	xyz(8.1380, 5.8337, 31.7011)
Luminance	0.0583 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223B9B #9B8222

analogous

#22789B #223B9B #45229B

triadic

#223B9B #9B223B #3B9B22

tetradic

#223B9B #9B2278 #9B8222 #229B45

square

#223B9B #9B2278 #9B8222 #229B45

split-complementary

#223B9B #9B4522 #789B22

monochromatic

#0C1537 #172869 #223B9B #2D4ECD #5C76DB

Accessibility & contrast

On white

9.69

#223B9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#223B9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223B9B

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223B9B	#FFFFFF	#000000	##FFFFFF
##223B9B	1.00	9.69	2.17	9.69
#FFFFFF	9.69	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004A9E

Deuteranopia (green-blind)

#003F99

Tritanopia (blue-blind)

#005465

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #223b9b;
/* rgb */ color: rgb(34, 59, 155);
/* oklch */ color: oklch(39.8% 0.159 267.3);

Tailwind

colors: {
  custom: {
    50: '#7170b9',
    500: '#223b9b',
    950: '#000000',
  },
}

SCSS

$custom: #223b9b;
$custom-light: #7170b9;
$custom-dark: #000000;

JSON

{
  "hex": "#223b9b",
  "rgb": {
    "r": 34,
    "g": 59,
    "b": 155
  },
  "hsl": {
    "h": 227.603,
    "s": 64.021,
    "l": 37.059
  },
  "oklch": {
    "l": 0.39795,
    "c": 0.15912,
    "h": 267.3
  },
  "luminance": 0.05835
}

Semantic roles & 50–950 ramp

primary

#223B9B

secondary

#C0AB59

accent

#C541E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #223B9B

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

Preview Lab → · Contrast checker → · Palette generator →