#223F7B#223F7B

#223F7B is a dark, moderate blue. Relative luminance 0.053; OKLCH L 38.0% C 0.108 H 262.9°. Best body text is #FFFFFF at 10.17:1 contrast (WCAG AA passes).

Color values

HEX	#223F7B
RGB	rgb(34, 63, 123)
HSL	hsl(220, 57%, 31%)
HSV	hsv(220, 72%, 48%)
CMYK	cmyk(72.4%, 48.8%, 0%, 51.8%)
CIE-LAB	lab(27.64, 11.11, -37.39)
CIE-LCH	lch(27.64, 39.00, 286.54°)
OKLab	oklab(37.99% -0.0133 -0.1071)
OKLCH	oklch(37.99% 0.108 262.9)
XYZ	xyz(6.0111, 5.3245, 19.4460)
Luminance	0.0532 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#223F7B #7B5E22

analogous

#226B7B #223F7B #31227B

triadic

#223F7B #7B223F #3F7B22

tetradic

#223F7B #7B226B #7B5E22 #227B31

square

#223F7B #7B226B #7B5E22 #227B31

split-complementary

#223F7B #7B3122 #6B7B22

monochromatic

#070E1B #15264B #223F7B #2F58AB #4A75CD

Accessibility & contrast

On white

10.17

#223F7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#223F7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #223F7B

10.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##223F7B	#FFFFFF	#000000	##FFFFFF
##223F7B	1.00	10.17	2.07	10.17
#FFFFFF	10.17	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#20467D

Deuteranopia (green-blind)

#0B3D7A

Tritanopia (blue-blind)

#004D57

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #223f7b;
/* rgb */ color: rgb(34, 63, 123);
/* oklch */ color: oklch(38.0% 0.108 262.9);

Tailwind

colors: {
  custom: {
    50: '#6973a2',
    500: '#223f7b',
    950: '#000000',
  },
}

SCSS

$custom: #223f7b;
$custom-light: #6973a2;
$custom-dark: #000000;

JSON

{
  "hex": "#223f7b",
  "rgb": {
    "r": 34,
    "g": 63,
    "b": 123
  },
  "hsl": {
    "h": 220.449,
    "s": 56.688,
    "l": 30.784
  },
  "oklch": {
    "l": 0.37994,
    "c": 0.10796,
    "h": 262.9
  },
  "luminance": 0.05325
}

Semantic roles & 50–950 ramp

primary

#223F7B

secondary

#AE8E4B

accent

#AE48E0

background

#F6F6FA

surface

#EBECF3

border

#C6C7CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #223F7B

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

Preview Lab → · Contrast checker → · Palette generator →