#223D9B#223D9B

#223D9B is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.2% C 0.157 H 266.7°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#223D9B
RGB	rgb(34, 61, 155)
HSL	hsl(227, 64%, 37%)
HSV	hsv(227, 78%, 61%)
CMYK	cmyk(78.1%, 60.6%, 0%, 39.2%)
CIE-LAB	lab(29.52, 25.11, -54.12)
CIE-LCH	lch(29.52, 59.66, 294.89°)
OKLab	oklab(40.19% -0.0089 -0.1564)
OKLCH	oklch(40.19% 0.157 266.7)
XYZ	xyz(8.2428, 6.0432, 31.7360)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223D9B #9B8022

analogous

#22799B #223D9B #44229B

triadic

#223D9B #9B223D #3D9B22

tetradic

#223D9B #9B2279 #9B8022 #229B44

square

#223D9B #9B2279 #9B8022 #229B44

split-complementary

#223D9B #9B4422 #799B22

monochromatic

#0C1537 #172969 #223D9B #2D51CD #5C78DB

Accessibility & contrast

On white

9.51

#223D9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#223D9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223D9B

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223D9B	#FFFFFF	#000000	##FFFFFF
##223D9B	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9E

Deuteranopia (green-blind)

#004099

Tritanopia (blue-blind)

#005566

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #223d9b;
/* rgb */ color: rgb(34, 61, 155);
/* oklch */ color: oklch(40.2% 0.157 266.7);

Tailwind

colors: {
  custom: {
    50: '#7172b9',
    500: '#223d9b',
    950: '#000000',
  },
}

SCSS

$custom: #223d9b;
$custom-light: #7172b9;
$custom-dark: #000000;

JSON

{
  "hex": "#223d9b",
  "rgb": {
    "r": 34,
    "g": 61,
    "b": 155
  },
  "hsl": {
    "h": 226.612,
    "s": 64.021,
    "l": 37.059
  },
  "oklch": {
    "l": 0.40191,
    "c": 0.15661,
    "h": 266.7
  },
  "luminance": 0.06044
}

Semantic roles & 50–950 ramp

primary

#223D9B

secondary

#C0A959

accent

#C241E7

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #223D9B

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

Preview Lab → · Contrast checker → · Palette generator →