#233D73#233D73

#233D73 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.098 H 263.1°. Best body text is #FFFFFF at 10.57:1 contrast (WCAG AA passes).

Color values

HEX	#233D73
RGB	rgb(35, 61, 115)
HSL	hsl(221, 53%, 29%)
HSV	hsv(221, 70%, 45%)
CMYK	cmyk(69.6%, 47%, 0%, 54.9%)
CIE-LAB	lab(26.54, 9.51, -34.10)
CIE-LCH	lch(26.54, 35.40, 285.58°)
OKLab	oklab(36.99% -0.0118 -0.0975)
OKLCH	oklch(36.99% 0.098 263.1)
XYZ	xyz(5.4553, 4.9321, 16.8808)
Luminance	0.0493 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D73 #735923

analogous

#236573 #233D73 #312373

triadic

#233D73 #73233D #3D7323

tetradic

#233D73 #732365 #735923 #237331

square

#233D73 #732365 #735923 #237331

split-complementary

#233D73 #733123 #657323

monochromatic

#070C17 #152444 #233D73 #3156A2 #4972C8

Accessibility & contrast

On white

10.57

#233D73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#233D73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D73

10.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D73	#FFFFFF	#000000	##FFFFFF
##233D73	1.00	10.57	1.99	10.57
#FFFFFF	10.57	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234375

Deuteranopia (green-blind)

#153B72

Tritanopia (blue-blind)

#004952

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #233d73;
/* rgb */ color: rgb(35, 61, 115);
/* oklch */ color: oklch(37.0% 0.098 263.1);

Tailwind

colors: {
  custom: {
    50: '#68729c',
    500: '#233d73',
    950: '#000000',
  },
}

SCSS

$custom: #233d73;
$custom-light: #68729c;
$custom-dark: #000000;

JSON

{
  "hex": "#233d73",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 115
  },
  "hsl": {
    "h": 220.5,
    "s": 53.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.3699,
    "c": 0.09817,
    "h": 263.1
  },
  "luminance": 0.04933
}

Semantic roles & 50–950 ramp

primary

#233D73

secondary

#A6894C

accent

#AD4BDD

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #233D73

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

Preview Lab → · Contrast checker → · Palette generator →