#223F71#223F71

#223F71 is a dark, moderate blue. Relative luminance 0.051; OKLCH L 37.3% C 0.093 H 260.5°. Best body text is #FFFFFF at 10.41:1 contrast (WCAG AA passes).

Color values

HEX	#223F71
RGB	rgb(34, 63, 113)
HSL	hsl(218, 54%, 29%)
HSV	hsv(218, 70%, 44%)
CMYK	cmyk(69.9%, 44.2%, 0%, 55.7%)
CIE-LAB	lab(26.98, 7.15, -32.13)
CIE-LCH	lch(26.98, 32.91, 282.55°)
OKLab	oklab(37.27% -0.0153 -0.0917)
OKLCH	oklch(37.27% 0.093 260.5)
XYZ	xyz(5.4168, 5.0868, 16.3160)
Luminance	0.0509 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223F71 #715422

analogous

#226771 #223F71 #2D2271

triadic

#223F71 #71223F #3F7122

tetradic

#223F71 #712267 #715422 #22712D

square

#223F71 #712267 #715422 #22712D

split-complementary

#223F71 #712D22 #677122

monochromatic

#070D18 #142542 #223F71 #3059A0 #4676C7

Accessibility & contrast

On white

10.41

#223F71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.02

#223F71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223F71

10.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223F71	#FFFFFF	#000000	##FFFFFF
##223F71	1.00	10.41	2.02	10.41
#FFFFFF	10.41	1.00	21.00	1.00
#000000	2.02	21.00	1.00	21.00
##FFFFFF	10.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284473

Deuteranopia (green-blind)

#1B3C70

Tritanopia (blue-blind)

#004A52

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #223f71;
/* rgb */ color: rgb(34, 63, 113);
/* oklch */ color: oklch(37.3% 0.093 260.5);

Tailwind

colors: {
  custom: {
    50: '#67739a',
    500: '#223f71',
    950: '#000000',
  },
}

SCSS

$custom: #223f71;
$custom-light: #67739a;
$custom-dark: #000000;

JSON

{
  "hex": "#223f71",
  "rgb": {
    "r": 34,
    "g": 63,
    "b": 113
  },
  "hsl": {
    "h": 217.975,
    "s": 53.741,
    "l": 28.824
  },
  "oklch": {
    "l": 0.37274,
    "c": 0.09292,
    "h": 260.5
  },
  "luminance": 0.05087
}

Semantic roles & 50–950 ramp

primary

#223F71

secondary

#A4834A

accent

#A74BDD

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #223F71

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

Preview Lab → · Contrast checker → · Palette generator →