#223F8B#223F8B

#223F8B is a dark, vivid blue. Relative luminance 0.058; OKLCH L 39.2% C 0.131 H 265.1°. Best body text is #FFFFFF at 9.76:1 contrast (WCAG AA passes).

Color values

HEX	#223F8B
RGB	rgb(34, 63, 139)
HSL	hsl(223, 61%, 34%)
HSV	hsv(223, 76%, 55%)
CMYK	cmyk(75.5%, 54.7%, 0%, 45.5%)
CIE-LAB	lab(28.79, 17.45, -45.49)
CIE-LCH	lch(28.79, 48.73, 290.99°)
OKLab	oklab(39.24% -0.0113 -0.131)
OKLCH	oklch(39.24% 0.131 265.1)
XYZ	xyz(7.0958, 5.7584, 25.1586)
Luminance	0.0576 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223F8B #8B6E22

analogous

#22748B #223F8B #3A228B

triadic

#223F8B #8B223F #3F8B22

tetradic

#223F8B #8B2274 #8B6E22 #228B3A

square

#223F8B #8B2274 #8B6E22 #228B3A

split-complementary

#223F8B #8B3A22 #748B22

monochromatic

#0A1229 #16295A #223F8B #2E55BC #5377D5

Accessibility & contrast

On white

9.76

#223F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.15

#223F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223F8B

9.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223F8B	#FFFFFF	#000000	##FFFFFF
##223F8B	1.00	9.76	2.15	9.76
#FFFFFF	9.76	1.00	21.00	1.00
#000000	2.15	21.00	1.00	21.00
##FFFFFF	9.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#06498E

Deuteranopia (green-blind)

#003F89

Tritanopia (blue-blind)

#00515E

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #223f8b;
/* rgb */ color: rgb(34, 63, 139);
/* oklch */ color: oklch(39.2% 0.131 265.1);

Tailwind

colors: {
  custom: {
    50: '#6d73ad',
    500: '#223f8b',
    950: '#000000',
  },
}

SCSS

$custom: #223f8b;
$custom-light: #6d73ad;
$custom-dark: #000000;

JSON

{
  "hex": "#223f8b",
  "rgb": {
    "r": 34,
    "g": 63,
    "b": 139
  },
  "hsl": {
    "h": 223.429,
    "s": 60.694,
    "l": 33.922
  },
  "oklch": {
    "l": 0.39242,
    "c": 0.13146,
    "h": 265.1
  },
  "luminance": 0.05759
}

Semantic roles & 50–950 ramp

primary

#223F8B

secondary

#B89C50

accent

#B844E4

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080810

muted

#7B7B7F

Preview Lab

Preview with #223F8B

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

Preview Lab → · Contrast checker → · Palette generator →